After seeing what one of these Truck Norris cams actually does in the wild. Where the engine had stock OEM flat top pistons with a TBSS intake and a set of out of the box Summit headers with a full exhaust to the back of the car (1980 Monte Carlo) running a 4l60E trans. I was very happy with the performance and even the fuel mileage that this performance cam provided. And is why we went with the same cam and flattop OEM pistons and 862 heads for our 5.3 LM7 build thats going in our 86 Camaro in the spring. If it makes anywhere near the 400 hp (NA) we will be very happy with what we have. Having a nice street car (with AC) With 400 hp on pump gas thats getting 20 plus MPG is about all you can ask for these days.
Richard is the man Seriously, he has been the main source of info for my engine build since I decided to pull it and build my 5.3. I’ve watched just about every video including “the other guys” episodes as they Will come in handy for my future boat engine build. Stay awesome Richard!
Truck Norris out-torques the Torq cam down low and out-powers the Stage 3 Truck cam up top. And the way that it carries peak power to 6500 rpm is amazing. Brian Tooley won't be able to keep them in stock.
Thank you for putting in the work. I truly appreciate all that you do. It helps me with cam decisions. I'm analyzing the trends that you show, and coming up with my own conclusions, pairing it with David Vizard's thoughts. My plans are for my LYQ, L96, and a built-for-torque 408.
Brian and his team work very hard. It takes a lot of effort to continue to improve and then go out in a public forum and let your test results be published win lose or draw whatever happen gets shown. Tech moves, gets better but only through hard work. The Truck Norris best cam name ever let’s do a poll. :P
I put a stage 2 truck cam in my LQ4 last year. I kinda wish I would have waited for the truck norris, but I'm still happy with the stage 2 truck cam. Cool comparison!
@@onebadbowtie86 stage two truck cam idles way better then truck Norris because of lsa and duration and even the best tunes/tuner will tell ya 107 lsa will still give you issues on a cold morning
@@utahcountypicazospage5412 I know, I just tuned a 5.3 silverado with one, remote starts fine in -15*. you need a tune with any of these cams, might as well get the one that makes the greatest power/torque.
Really wish people would stop thinking the TN cam outperforms ANY stock cam for towing (1500-2500rpm). Unless you test the rpm curve from idle, everyone and their mommas knows larger duration, more lift and a tighter valve sequence makes more power at 6500rpm. I would take a stock 5.3 VVT cam over ANY aftermarket cam for towing or low rpm torque, that’s a fact.
Do a 5.3 build, heads, cam, intake and headers but on 87/89 octane for those of us who have off road daily drivers who need low speed control for rocks and then grunt to pull through sand hills
It's amazing how btr made the defacto " what cam is best for my truck. I don't want to run springs or a stall" the answer now is the truck Norris. All day everyday.
so im guessing to maximize the performance of the truck norris cam, a 93 octane tune would be required? Keep up the fantastic work by the way Richard! Keep the data coming!
Love what this channel does. Also really appreciate the dyno charts that go all the way down to 2k rpm. Lotta times that's where I'm rolling into it on the street. Particularly when I don't want to sound too conspicuous. I'm pulling from 2k to 4k a lot more often than 4k to 6k. A cam like the Truck Norris seems ideal.
Richard, thanks again for the wealth of information. The test you ran is basically my set up. I just got my Gen 4 rods, undecided on stock vs. flat top pistons. Again, thanks for the wealth of information
Gotta love a tight lsa camshaft. I remember when Holden introduced the LS1 into the Australian market that people weren't impressed with the lack of low end torque. Considering the base model Holden Commodore sedan 2001 could be purchased with the 5.7 300 hp LS1 compared to the previous Holden 5.0 240 hp.
Hello Richard, I have yukon 5.3 v8 2008 with 4L60E transmission, and DOD DELETED and I will add in my yukon: 1-long tube HEADERS (Speed engineer) 2-cold air intake(volant) 3-full system exhaust with Y pipe The qustaion Is which cam should I buy to make more hp and tq: 1-BTR GEN III & IV LS TRUCK NORRIS CAM Or 2-BTR GEN III & IV LS TRUCK NORRIS NSR CAM Another qustaion do I have buy valve springs and pushrods? Thanks a lot and you are helping the people who want to get more hp and tq in thiers cars.
Thanks for the video Richard. I'm convinced I need this truck norris cam with a tbss intake, 92mm throttle body. Headers and ported 706 heads with a 2500-3000 stall, should be a stout motor.
@@natricjol this is my plan. I'm ordering the cam next week, then I'll probably get a stall or tbss intake. I'm just going to keep doing it in stages along with gears to top it off.
@@MRC_Garage If you get the tbss, also do the throttle (and x-link if needed), new injectors, oil pressure sensor since it's right behind the manifold, and 4 corner steam vent kit. Makes life easier to get all that at once.
Thank You Richard, Awesome Content Brother, Would Love to See your Take on Match for Lifter Quality, with So many Counterfeits out there, The Extra $$$ to get Bowtie Caddy, Morel or Johnson Lifters just seems appropriate Thanks
I put a 6.0 in a ‘05 Suburban with the BTR Stage1 Truck cam, it can idle and pass CA emissions on the factory 5.3 tune. I just found an idle clip of “Truck Norris”, IMO that would be miserable with the stock tight converter these trucks came with and I don’t think it’s going to be happy at a factory 550rpm idle. In short, drivability of the Stg1 probably better and you can sneak it past the Gestapo every two years. Thanks for another great vid Richard!
Part of the TN is it works great with stock converter. It's made to have a rowdy idle while actually being smooth with the stock converter. Lots of tuning time (correct ve table then adjust maf and timing over and over) gave choppy but emissions worthy idle with good driveability. Tows better than stock too. (Edited for spelling)
Personal Observations Made Comparing The Truck Norris To The Stage 1-4: TN Had The Tightest LSA Of 107. It Also Has The second Highest Amount Of Overlap (when guessing Exhasut duration is 222) STG1 Had The Least Amount Of Overlap And Widest LSA 112. It's "RPM HP Hump" Was The Earliest. It Made Less Overall HP And Torque Because LSA Was Was Furthest From Optimal For Engine. STG 2 Had The Next Shortest Amount Of Overlap And A Slightly Tighter 111 LSA. This Cam Didn't Really Shift The HP Hump From The Stage 1 Further Up In RPM But Rather Widened The Hump. Power Did Increase From STG1 Suspected By The Slight Lift Increase And Tighter LSA Approaching Optimal. STG 3 Had 3rd Shorted Amount Of Overlap And Again A Slightly Tighter 110 LSA. The Change In Overlap From 2-3 Is Increasing However The HP Hump Isn't Really Shifting Higher Up In The RPMs. The Increases Appear To LSA Approaching Optimal As It Gets Tighter. STG 4 Had The Most Amount Of Overlap And More Overlap Than The TN Cam. Oddly The LSA Went Up To 111. This Cam didn't Really Shift The Power Much Higher Up The RPM Given More Overlap. It Did However Make More Power Than The TN. The Increased Overlap Seems To Have Traded More Low End To Compensate For Having The LSA Further From Optimal For This Engine Compared To The TN 107LSA. I Think If The STG4 Kept Same Overlap But Ran A 108-9 LSA The Power Gain Would Be More Higher And Less Behind The TN In The Lower RPMs In The Curve. I'm Starting To See That Overlap Isn't Trading 3-4RPM Power And Shifting The Peak RPM Power Range As High Up As I Think. It Appears To Be Trading Much Lower RPM Power 1500-3000 RPM And Slightly Shifting The RPM It Peaks At While Raising The Peak. The Duration Bias. The TN Appears To Have The Largest Duration Bias With Much More Duration On The Exhaust. This Appears To Flatten/Carry The Peak Power Further Out. From What I've Read Doing This Does Indeed To Show This True. However It Says It Trades Low End When You Bais The Exhaust For More Duration. This Isn't Really Seen With The TN Cam... However It Is Possible Since The LSA Is More Near Optimal That The STG4 Cam It May Not Show The Trade Since The STG Is Loosing Some Of It From LSA Being Further From Optimal. These Are Personal Notes.
I agree with you that if you have already done a cam swap that it's probably not enough difference to make a difference between the cams to justify the cost and effort to change it. But if you have a stock cam and want to get the best upgrade cam I think the the truck Norris cam is definitely the one to get. Thank you great video. Just to let you know. Your videos are awesome I have learned a lot and there's things I was thinking about that were wrong and others I had a pretty good understanding of and your videos have shown me with dyno data where I was right and wrong and why.
The Truck Norris cam works best N/A because of the tight LSA @107deg. Makes more power over a wide powerband. Those bigger duration cams with wide LSA's sacrifice alot through out the power band for small gains up top. Better suited for boost
Thank you Richard! My kind of content! BTR makes some excellent products no doubt. Would really love to see some pulls with some of the truck offerings from Cam Motion. They are good people.
Good info, how does it relate on fuel consumption vs stock, trying to figure best for daily without changing to loose converter, I expect higher fuel consumption but how much, I am changing rear gear to 3.73 and have longtube header (JBA) ON 4.8, It does pull small trailer on regular basis, so I'm shopping and doing research as much as possible
Was going to order a BTR stage 3 or 4 cam, but I think now I'll get the Truck Norris. I have a 5.3L LM7 in my Z71 with Speed Engineering 1 3/4" long tubes and off-road y-pipe, speed engineering air intake with heat shield, 4.10 gears, Yank 3000 stall, and tuned with HP Tuners. Since I don't currently have an upgraded camshaft, I think Rich is correct that the Truck Norris cam would be my best choice and then I can work on optimizing my tune for 91 octane premium fuel that we have out here (these fuel prices are horrendous). I like that it makes more torque than all the other cams and in a heavy truck that I tow with I need all the torque I can get. I could care less about a few less peak HP up top since I don't stay at high RPM. I am going to raise my shift points to around 6500 RPM. Thanks for another great video, Richard!
@@reyperez3424 I bought the Truck Norris cam kit direct from BTR. I went with their BTR springs and seals, and I bought the adapter for the spark plug holes to use an air compressor to keep the valves in place when changing the seals. I haven't installed it yet because it's getting cold here and I burned up my air compressor. Might just have a shop do the labor for me since I'm busy and don't have the time with having to watch my young daughter on my days off.
Hello, I always watch your videos, and I learn a lot from them. I have a stock 5.3 Lm7 engine and 862 heads with a 68 inlet and 90 outlet turbocharger, with a fitech injection system for 750hp with a 102 throttle. My question is what do you recommend for my configuration? , and also if you know the gap between the rings and the pistons, I understand that it is different when it is turbocharged for street use. Thanks for the help. What cam do you recommend for my configuration ? Thanks
Good day , I’m sure in one of your videos you probably discussed this but with Truck noris cam , 4l80 trans in rx8 swap 4.4 rear gears What stall converter should I be using? Thanks for all your hard work
I have a stage 2 in my daily and its pretty good. The one thing I want to point out is this is on a stock headed stock intake I'm assuming motor... be curious to see what these numbers would be on. A built 5.3. I am going cam motion titan 2 ls1 cam for my new build. Want to see how it works out. Going with a 3200 stall as well and a good combination on the motor. Can you test some cam motion stuff soon? They could be considered "the other guys"!
see the comparison video between standard TN and NSR version (the higher lift standard version was 5-6 hp better), and the lifters are help up away from the cam by the lifter trays during the cam swap
They won't make 11 percent more power just because of the displacement. The 5.3 will peak at a higher rpm because the airflow requirements are relatively less than the 6.0
I'd be really interested in how these cams and also a turbo will affect fuel consumption. Mostly just part throttle cruise. That's the only thing that worries me about replacing the cam in my daily tahoe. Fuel is so expensive and it already is pretty thirsty even with afm.
@@skirkland1980 I'm averaging 15 mph 2005 Silverado SS stock. Was looking at cams because it seems like a win/win more power no loss in economy when cruising.
Well after doing the truck norris swap into an l92 6.2, I can say it might be making 400 hp. Stock manifolds. I'm hoping to see more power with long tube headers, maybe my tune is just crap. Pump fuel.
Oh man ! Now you've got me pondering again ! I have a gen- 4 4.8 in a 12 silvy and had pretty much decided on the btr st2 4.8 turbo cam ....BUT NOW lol ,im wondering if this truck norris cam would help me spool the 7678 vsr turbo a little better ? What are your thoughts Richard ? Thanks !
That was a good mention about the 87 fuel octane tunes.my truck 87 can only handle 17-18 timing at the top safely.e85 the most I've tried 24-26 no nock.8.1 gm injectors at 55psi were not big enough.6.0 243 home ported heads comp 218 springs 560 lift 218 220 114lsa. More information on the tunes would be nice. Either way good video.1 more with 6.0.yes
I commented on 1 of the other cam comparison videos. In short I am building a 408 for a Silverado. In my case the truck Norris is the winner. At the end of vid, you hit on probably the most important topic: the tune. If I don't have access to a tune shop w a dyno, what's the 2nd choice? I live in a small town in Montana and am not aware of any shops out here.
I'm tempted to put one of those Truck Norris cams in my 2500HD plow truck, but I already have wheel traction issues in the deep snow and honestly don't need more power in those moments.
Fantastic video!!!! Answers all but one question.... Drivability on stock converter, ive been told its ok and still able to retain stock drivability? 2007 L92 Escalade with a new trans/factory converter, dont want to replace it again if i dont need to.
The secret sauce for great low end torque production and decent high end power is the tight LSA. A tight LSA is great for a drag car but in the daily driven real world it will cost you efficiency and give you a worse idle and vacuum. For a daily driven truck even with a great tune I'd go with the torque cam 10 times out of 10. Just my opinion.
I like the T. Norris ( ridiculous name) cam. I want the torque and power increase…BUT…I want long lasting reliability. Are springs enough for that? Ugh , so many questions and videos…lol
Is there such thing as TOO much spring? I have the BTR .660 lift springs on my 799 heads, going into an L33 block and was going to look at the Turbo Cam Stage 2, but this one looks like a much more fun cam on the street
I bought the truck Norris cam after seeing this video about a year ago. Unfortunately the dyno graph here doesn’t seem to match the driving experience. Two 5.3 lm7 engines I’ve put cams in so far and the stage 2 cam had a lot more bottom end than the truck Norris. Truck Norris cam drove similar to a stage 3 cam in my opinion. I was more impressed with stage 2.
So it seems like exhaust controlls how high the cam revs even with low intake duration lsa is also a big factor seems the trade off would be rough idle for not much power .torque yes but hp seems low for how rough the idle quality is
Do you think the torque cam would require a tune and converter on a otherwise stock 99 5.3 in 4wd truck? The TN seems to at least require a tune? What do you think?
@@moejr14 it’s always best to get a tune. If you just throw the cam in. The computer will do its best to make adjustments but it won’t be optimal without a tune.
I got a reman jasper engine with the stage one upgrade . Runs like absolute crap . Way worse then my worn out old engine. Researched and found they put a car c FSL. Fifty state legal. 570 lift 118 pope separation. They accepted they sold wrong cam for truck and out giving me a full refund plus labor. I'm going to put the torque cam in and get her tuned. Thanks for all you great info !! Richard you have answered a lot of questions for me
@richardholdener1727 (The maximum amount of horsepower without blowing its internals. I'm new to this, and I want to have my engine built to withstand being literally beat the shit out of lol
Just a thought - what about a "other guys" LS cam test? We're all familiar with Comp and BTR but what other great yet lesser known cams are out there and how do they compare?
Wondering about these cams, but in a 6.2 instead of 5.3? Would the extra displacement, head flow, and compression change this comparison between cams? I get that the 5.3 is way more common and cheaper, but cam comparisons for the 6.2 truck engine is way harder to find...
@@richardholdener1727 Thanks Richard... Last question: I saw you did some LS3 cam comparisons... Have you looked at any of the truck specific cams for that engine (L92)? I'm looking at TSP's specific L92 truck cams, they have more duration and lift but a wider LSA than this TN cam... I know the wider lobes and increased lift would make more top end, but what about the lower RPM midrange? Do you think the TN would actually be better with it's narrower LSA? If not, I'd like more top end but not if I have to sacrifice much down low.
Richard “just the facts” Holdener - an engineer showing us what the parts really do. Hope you keep doing what you’re doing.
The most straightforward source of any engine data I really need. It’s insane how much he’s had access to in his career
After seeing what one of these Truck Norris cams actually does in the wild. Where the engine had stock OEM flat top pistons with a TBSS intake and a set of out of the box Summit headers with a full exhaust to the back of the car (1980 Monte Carlo) running a 4l60E trans. I was very happy with the performance and even the fuel mileage that this performance cam provided. And is why we went with the same cam and flattop OEM pistons and 862 heads for our 5.3 LM7 build thats going in our 86 Camaro in the spring. If it makes anywhere near the 400 hp (NA) we will be very happy with what we have. Having a nice street car (with AC) With 400 hp on pump gas thats getting 20 plus MPG is about all you can ask for these days.
What to know when ordering OEM flat tops for a 5.3? I was interested in using flat tops but wasn’t sure which to order
Which is best for my stock 2007 Tahoe to delete the cylinder deactivation and for best mpg and Towing?
Looks like Truck Norris roundhouse-kicked all the "stage" cams right off the stage. 😉
I've been wondering how the norris would compare to the stage 3 or 4 Btr v2 truck cams now you answered my thoughts
Richard is the man
Seriously, he has been the main source of info for my engine build since I decided to pull it and build my 5.3.
I’ve watched just about every video including “the other guys” episodes as they Will come in handy for my future boat engine build.
Stay awesome Richard!
✍🏿
Truck Norris out-torques the Torq cam down low and out-powers the Stage 3 Truck cam up top. And the way that it carries peak power to 6500 rpm is amazing. Brian Tooley won't be able to keep them in stock.
The BEST AUTOMOTIVE CHANNEL ON RUclips...
Thank you for putting in the work. I truly appreciate all that you do. It helps me with cam decisions. I'm analyzing the trends that you show, and coming up with my own conclusions, pairing it with David Vizard's thoughts. My plans are for my LYQ, L96, and a built-for-torque 408.
Wow, the truck Norris cam has a built-in phaser with such a wide power band.
NOW we need to see VVT cams vs TRUCK NORRIS on LS engines!!
Brian and his team work very hard. It takes a lot of effort to continue to improve and then go out in a public forum and let your test results be published win lose or draw whatever happen gets shown. Tech moves, gets better but only through hard work. The Truck Norris best cam name ever let’s do a poll. :P
agreed on the name
I put a stage 2 truck cam in my LQ4 last year. I kinda wish I would have waited for the truck norris, but I'm still happy with the stage 2 truck cam. Cool comparison!
You already have torque in a 6.0 your not missing much since you have the cubic inches not to mention on a cold day that truck norris won’t idle lol
@@utahcountypicazospage5412 wrong, tune will fix the cold idle.
@@onebadbowtie86 stage two truck cam idles way better then truck Norris because of lsa and duration and even the best tunes/tuner will tell ya 107 lsa will still give you issues on a cold morning
@@utahcountypicazospage5412 I know, I just tuned a 5.3 silverado with one, remote starts fine in -15*. you need a tune with any of these cams, might as well get the one that makes the greatest power/torque.
Really wish people would stop thinking the TN cam outperforms ANY stock cam for towing (1500-2500rpm). Unless you test the rpm curve from idle, everyone and their mommas knows larger duration, more lift and a tighter valve sequence makes more power at 6500rpm. I would take a stock 5.3 VVT cam over ANY aftermarket cam for towing or low rpm torque, that’s a fact.
Thanks Richard! 2014 L83 engine with a 6l80 trans can I run my stock converter with this Truck Norris Cam.
Good job Richard may seem like repetive to you but theesecomparisons are great I love what you do you are a legend
I just received my stage 2 truck norris for my 5.3 cannot wait to see the results.
I bought a stage 1 truck cam and I'm going to stick with it. Although the truck norris cam is a beast
Do a 5.3 build, heads, cam, intake and headers but on 87/89 octane for those of us who have off road daily drivers who need low speed control for rocks and then grunt to pull through sand hills
It's amazing how btr made the defacto " what cam is best for my truck. I don't want to run springs or a stall" the answer now is the truck Norris. All day everyday.
you need springs and might need a converter
I just ordered mine from BTR for my LQ4. It should perform well with the 799 heads.
How did it come out are you happy with it ?
so im guessing to maximize the performance of the truck norris cam, a 93 octane tune would be required? Keep up the fantastic work by the way Richard! Keep the data coming!
Love what this channel does. Also really appreciate the dyno charts that go all the way down to 2k rpm. Lotta times that's where I'm rolling into it on the street. Particularly when I don't want to sound too conspicuous. I'm pulling from 2k to 4k a lot more often than 4k to 6k. A cam like the Truck Norris seems ideal.
Richard, thanks again for the wealth of information. The test you ran is basically my set up. I just got my Gen 4 rods, undecided on stock vs. flat top pistons. Again, thanks for the wealth of information
Gotta love a tight lsa camshaft. I remember when Holden introduced the LS1 into the Australian market that people weren't impressed with the lack of low end torque. Considering the base model Holden Commodore sedan 2001 could be purchased with the 5.7 300 hp LS1 compared to the previous Holden 5.0 240 hp.
And I thought the ls1 had all the low end torque
@@alexvillalobos7137Compared to the 1st gen SBC, LS make no torque down low lol
Awesome Richard!!… you have given answers from the Truck Gods
Ask, and it shall be given you; seek, and ye
shall find..
For everyone who asks receives
Hello Richard,
I have yukon 5.3 v8 2008 with 4L60E transmission, and DOD DELETED and I will add in my yukon:
1-long tube HEADERS (Speed engineer)
2-cold air intake(volant)
3-full system exhaust with Y pipe
The qustaion Is which cam should I buy to make more hp and tq:
1-BTR GEN III & IV LS TRUCK NORRIS CAM
Or
2-BTR GEN III & IV LS TRUCK NORRIS NSR CAM
Another qustaion do I have buy valve springs and pushrods?
Thanks a lot and you are helping the people who want to get more hp and tq in thiers cars.
I am going to say the narrower LSA ia why it generally does better.
You are correct.
simplification-lots of cams have tighter LSAs
Thanks for the video Richard. I'm convinced I need this truck norris cam with a tbss intake, 92mm throttle body. Headers and ported 706 heads with a 2500-3000 stall, should be a stout motor.
The nice part is the cam is set up to be able to be used with a stock converter.
Tbss is easy to swap on real quick. Highly recommended.
@@natricjol this is my plan. I'm ordering the cam next week, then I'll probably get a stall or tbss intake. I'm just going to keep doing it in stages along with gears to top it off.
@@MRC_Garage If you get the tbss, also do the throttle (and x-link if needed), new injectors, oil pressure sensor since it's right behind the manifold, and 4 corner steam vent kit. Makes life easier to get all that at once.
@@natricjol good idea man, I will do that forsure
What are thoughts of the new red hot cam or the truck norris cam
So I'm new to the game and just got me a 01 chevy silverado with a 5.3 with 706 heads and these videos help me alot into what to upgrade.. Thanks alot
Glad to help
You should compare the Truck Norris cam and the bfd chop monster cam. Would be very interested is seeing the differences between the two on the dyno.
Thank You Richard, Awesome Content Brother, Would Love to See your Take on Match for Lifter Quality, with So many Counterfeits out there, The Extra $$$ to get Bowtie Caddy, Morel or Johnson Lifters just seems appropriate Thanks
Man you’re such a blessing to have on this earth! Going to order the BTR Truck Norris cam for my 4x4 05 Silverado
I put a 6.0 in a ‘05 Suburban with the BTR Stage1 Truck cam, it can idle and pass CA emissions on the factory 5.3 tune. I just found an idle clip of “Truck Norris”, IMO that would be miserable with the stock tight converter these trucks came with and I don’t think it’s going to be happy at a factory 550rpm idle. In short, drivability of the Stg1 probably better and you can sneak it past the Gestapo every two years. Thanks for another great vid Richard!
Part of the TN is it works great with stock converter. It's made to have a rowdy idle while actually being smooth with the stock converter. Lots of tuning time (correct ve table then adjust maf and timing over and over) gave choppy but emissions worthy idle with good driveability. Tows better than stock too.
(Edited for spelling)
Just ordered a BTR stage 1 for the daily driver aspect and stock deleted tune. Makes 40-50 more HP over stock which is great.
Hey Richard can you test .. (BTR.trucknorris) VS The new (TSP.Chopacabra )..
Test the Tick Performance Towmax stage 2 cams please!
I second this. Also compare the torquemax cams as well.
Personal Observations Made Comparing The Truck Norris To The Stage 1-4:
TN Had The Tightest LSA Of 107. It Also Has The second Highest Amount Of Overlap (when guessing Exhasut duration is 222)
STG1 Had The Least Amount Of Overlap And Widest LSA 112. It's "RPM HP Hump" Was The Earliest. It Made Less Overall HP And Torque Because LSA Was Was Furthest From Optimal For Engine.
STG 2 Had The Next Shortest Amount Of Overlap And A Slightly Tighter 111 LSA. This Cam Didn't Really Shift The HP Hump From The Stage 1 Further Up In RPM But Rather Widened The Hump. Power Did Increase From STG1 Suspected By The Slight Lift Increase And Tighter LSA Approaching Optimal.
STG 3 Had 3rd Shorted Amount Of Overlap And Again A Slightly Tighter 110 LSA. The Change In Overlap From 2-3 Is Increasing However The HP Hump Isn't Really Shifting Higher Up In The RPMs. The Increases Appear To LSA Approaching Optimal As It Gets Tighter.
STG 4 Had The Most Amount Of Overlap And More Overlap Than The TN Cam. Oddly The LSA Went Up To 111. This Cam didn't Really Shift The Power Much Higher Up The RPM Given More Overlap. It Did However Make More Power Than The TN. The Increased Overlap Seems To Have Traded More Low End To Compensate For Having The LSA Further From Optimal For This Engine Compared To The TN 107LSA. I Think If The STG4 Kept Same Overlap But Ran A 108-9 LSA The Power Gain Would Be More Higher And Less Behind The TN In The Lower RPMs In The Curve.
I'm Starting To See That Overlap Isn't Trading 3-4RPM Power And Shifting The Peak RPM Power Range As High Up As I Think. It Appears To Be Trading Much Lower RPM Power 1500-3000 RPM And Slightly Shifting The RPM It Peaks At While Raising The Peak.
The Duration Bias. The TN Appears To Have The Largest Duration Bias With Much More Duration On The Exhaust. This Appears To Flatten/Carry The Peak Power Further Out. From What I've Read Doing This Does Indeed To Show This True. However It Says It Trades Low End When You Bais The Exhaust For More Duration. This Isn't Really Seen With The TN Cam... However It Is Possible Since The LSA Is More Near Optimal That The STG4 Cam It May Not Show The Trade Since The STG Is Loosing Some Of It From LSA Being Further From Optimal.
These Are Personal Notes.
duration determines rpm
I've just purchased the truck norris cam for my ly6 😎
I agree with you that if you have already done a cam swap that it's probably not enough difference to make a difference between the cams to justify the cost and effort to change it. But if you have a stock cam and want to get the best upgrade cam I think the the truck Norris cam is definitely the one to get. Thank you great video. Just to let you know. Your videos are awesome I have learned a lot and there's things I was thinking about that were wrong and others I had a pretty good understanding of and your videos have shown me with dyno data where I was right and wrong and why.
greetings from Venezuela summit launched an 8728 torquination cam it is called to compete with the Norris truck it would be very good to compare them
So..... serious question.
Is there a better option for a reliable toy hauler than the Truck Norris camshaft? Would you gain more from a custom grind?
no
@richardholdener1727 would you be willing to do a BTR Truck Norris vs. Texas Speed Chapacabra camshaft comparison?
The name is fitting. Gotta respect chuck
The Truck Norris cam works best N/A because of the tight LSA @107deg. Makes more power over a wide powerband. Those bigger duration cams with wide LSA's sacrifice alot through out the power band for small gains up top. Better suited for boost
The Truck Norris works well because of valve events and EVERY cam works with boost
Thank you Richard! My kind of content!
BTR makes some excellent products no doubt. Would really love to see some pulls with some of the truck offerings from Cam Motion.
They are good people.
Steve is good people at Cam Motion
I would love to see the compared in a 6.0 truck and which would make more power and torque
Good info, how does it relate on fuel consumption vs stock, trying to figure best for daily without changing to loose converter, I expect higher fuel consumption but how much, I am changing rear gear to 3.73 and have longtube header (JBA) ON 4.8, It does pull small trailer on regular basis, so I'm shopping and doing research as much as possible
Was going to order a BTR stage 3 or 4 cam, but I think now I'll get the Truck Norris. I have a 5.3L LM7 in my Z71 with Speed Engineering 1 3/4" long tubes and off-road y-pipe, speed engineering air intake with heat shield, 4.10 gears, Yank 3000 stall, and tuned with HP Tuners. Since I don't currently have an upgraded camshaft, I think Rich is correct that the Truck Norris cam would be my best choice and then I can work on optimizing my tune for 91 octane premium fuel that we have out here (these fuel prices are horrendous). I like that it makes more torque than all the other cams and in a heavy truck that I tow with I need all the torque I can get. I could care less about a few less peak HP up top since I don't stay at high RPM. I am going to raise my shift points to around 6500 RPM.
Thanks for another great video, Richard!
Just ordered the Truck Norris cam, BTR valve springs, and the valve holding tool. Can't wait to get it installed in my truck.
Update?
@@reyperez3424 I bought the Truck Norris cam kit direct from BTR. I went with their BTR springs and seals, and I bought the adapter for the spark plug holes to use an air compressor to keep the valves in place when changing the seals. I haven't installed it yet because it's getting cold here and I burned up my air compressor. Might just have a shop do the labor for me since I'm busy and don't have the time with having to watch my young daughter on my days off.
Which of these do you have to run a stall with
Which is best for my stock 2007 Tahoe to delete the cylinder deactivation and for best mpg and Towing a 7,000lb boat?
low buck truck-I have those for $179
What is the part number on the DOD Delete cam? Sorry if I missed it in the vid.
Hello, I always watch your videos, and I learn a lot from them. I have a stock 5.3 Lm7 engine and 862 heads with a 68 inlet and 90 outlet turbocharger, with a fitech injection system for 750hp with a 102 throttle. My question is what do you recommend for my configuration? , and also if you know the gap between the rings and the pistons, I understand that it is different when it is turbocharged for street use. Thanks for the help.
What cam do you recommend for my configuration ?
Thanks
Richard have you done a test on the crower cam comp cams and the truck norris cam comparison
which ones?
Good day , I’m sure in one of your videos you probably discussed this but with Truck noris cam , 4l80 trans in rx8 swap 4.4 rear gears
What stall converter should I be using?
Thanks for all your hard work
2800 or so
Thank you
You are the man...I love how u speak the truth....
Great comparison , wish the truck Norris cam was out/popular last year .
Truck Norris cam seems to be the perfect cam
yeah but is the Truck Norris cam a turbo cam?
Nice! I wanted a tight LSA truck cam for so long, very happy with the results!
Now I gotta pull my stage 3 truck cam out of my 6.0 for the truck Norris lol
I have a stage 2 in my daily and its pretty good. The one thing I want to point out is this is on a stock headed stock intake I'm assuming motor... be curious to see what these numbers would be on. A built 5.3. I am going cam motion titan 2 ls1 cam for my new build. Want to see how it works out. Going with a 3200 stall as well and a good combination on the motor. Can you test some cam motion stuff soon? They could be considered "the other guys"!
Hell yeah, can't wait to get mine put together and installed!
Great info Mr Holdner!
How do you change cams without pulling lifters ? And which is better cam truck norris nsr cam or tge regular truck norris cam
see the comparison video between standard TN and NSR version (the higher lift standard version was 5-6 hp better), and the lifters are help up away from the cam by the lifter trays during the cam swap
Just get the truck Norris cam guys 👏🏽
Curious to see what a 6.0 would look like
All of these cams will make more power in a 6.0 when compared to a 5.3.
The same lines but slightly bigger numbers everywhere. Literally as simple as that.
All of the cams would perform the same in comparison to each other. Add x amount of power to each
add 11% more power for sure.
They won't make 11 percent more power just because of the displacement. The 5.3 will peak at a higher rpm because the airflow requirements are relatively less than the 6.0
How would the Truck Norris cam do with 1.7 rockers? I'd hate to hafta put the 1.6s back in.
I'd be really interested in how these cams and also a turbo will affect fuel consumption. Mostly just part throttle cruise. That's the only thing that worries me about replacing the cam in my daily tahoe. Fuel is so expensive and it already is pretty thirsty even with afm.
There's been a few reviews saying that their truck gets 14/22 to 13/20 city/highway with a truck cam. I watched them on RUclips
It's all about efficiency... The more efficient you make your engine it will get better fuel economy as long as you keep your foot out of it.
@@marthamryglod291 that's better than my completely stock tahoe with afm.
@@skirkland1980 I'm averaging 15 mph 2005 Silverado SS stock. Was looking at cams because it seems like a win/win more power no loss in economy when cruising.
@@marthamryglod291 my display on the dash is saying I get 16.7mpg.
After breaking in a cam how long should you use the break in oil before going to conventual oil?
500 miles
My next upgrade is a camshaft. thanks for the info, this helps
Well after doing the truck norris swap into an l92 6.2, I can say it might be making 400 hp. Stock manifolds. I'm hoping to see more power with long tube headers, maybe my tune is just crap. Pump fuel.
Oh man ! Now you've got me pondering again ! I have a gen- 4 4.8 in a 12 silvy and had pretty much decided on the btr st2 4.8 turbo cam ....BUT NOW lol ,im wondering if this truck norris cam would help me spool the 7678 vsr turbo a little better ? What are your thoughts Richard ? Thanks !
pick the TN for that
That was a good mention about the 87 fuel octane tunes.my truck 87 can only handle 17-18 timing at the top safely.e85 the most I've tried 24-26 no nock.8.1 gm injectors at 55psi were not big enough.6.0 243 home ported heads comp 218 springs 560 lift 218 220 114lsa. More information on the tunes would be nice. Either way good video.1 more with 6.0.yes
Mines reading 25.5° of timing on 87
So non of these cams need a stall converter?
all of them most likely
What a great video for idiots like me that wonder the same thing but cant test them... thanks richard
man I just installed a BTR truck cam in my 4.8. I wish I knew this was coming out
Some of the secret sauce on the truck norris is gotta be that 107lsa
Stage 2 truck cam and truck norris have similar lift and duration but the lsa is tighter on the TN sounds like Mr Vizard is right
valve events are different-lsa is not a singular thing
Thank You .... The swiss army cam
Truck norris is the way to go for daily drivers
I commented on 1 of the other cam comparison videos. In short I am building a 408 for a Silverado. In my case the truck Norris is the winner. At the end of vid, you hit on probably the most important topic: the tune. If I don't have access to a tune shop w a dyno, what's the 2nd choice? I live in a small town in Montana and am not aware of any shops out here.
street or remote tune
Are any of these cams more economical than stock cams ?.....fuel is expensive atm .
I'm tempted to put one of those Truck Norris cams in my 2500HD plow truck, but I already have wheel traction issues in the deep snow and honestly don't need more power in those moments.
Woo woo! Late night post-live uploads!
Fantastic video!!!! Answers all but one question.... Drivability on stock converter, ive been told its ok and still able to retain stock drivability? 2007 L92 Escalade with a new trans/factory converter, dont want to replace it again if i dont need to.
STOCK CONVERTER ON L92 WILL BE NO PROBLEM-WILL NEED TO BE TUNED
@@richardholdener1727 you are the man! Thank you
The secret sauce for great low end torque production and decent high end power is the tight LSA. A tight LSA is great for a drag car but in the daily driven real world it will cost you efficiency and give you a worse idle and vacuum. For a daily driven truck even with a great tune I'd go with the torque cam 10 times out of 10. Just my opinion.
If you decide that based on the lsa-you need to look closer
So if I'm calculating right, my LQ9 with 706 heads, truck norris cam, and long tube headers should be about 460 tq/470 ho?
I like the T. Norris ( ridiculous name) cam. I want the torque and power increase…BUT…I want long lasting reliability. Are springs enough for that? Ugh , so many questions and videos…lol
it works and lasts with the cam and spring upgrade
Is there such thing as TOO much spring? I have the BTR .660 lift springs on my 799 heads, going into an L33 block and was going to look at the Turbo Cam Stage 2, but this one looks like a much more fun cam on the street
YES
I wonder how much difference there would be with a Stage 4v2 in a 6.0 LQ9 with 243 heads with a ported TBSS intake versus a TN cam.
That’s the exact combo I want to see. I too have an LQ9 that I plan to run 243 heads and tbss intake on. 😎
I bought the truck Norris cam after seeing this video about a year ago. Unfortunately the dyno graph here doesn’t seem to match the driving experience. Two 5.3 lm7 engines I’ve put cams in so far and the stage 2 cam had a lot more bottom end than the truck Norris. Truck Norris cam drove similar to a stage 3 cam in my opinion. I was more impressed with stage 2.
you have your tune to blame-a stage 2 has less low speed
So it seems like exhaust controlls how high the cam revs even with low intake duration lsa is also a big factor seems the trade off would be rough idle for not much power .torque yes but hp seems low for how rough the idle quality is
Just installed my truck Norris cam
Do you think the torque cam would require a tune and converter on a otherwise stock 99 5.3 in 4wd truck?
The TN seems to at least require a tune? What do you think?
I need the same answer
@@moejr14 it’s always best to get a tune. If you just throw the cam in. The computer will do its best to make adjustments but it won’t be optimal without a tune.
Any cam change will require a tune, they make so much power compared to the stock cam.
every cam requires a tune-but the torque cam doesn't need a converter on a 5.3l
I got a reman jasper engine with the stage one upgrade . Runs like absolute crap . Way worse then my worn out old engine. Researched and found they put a car c FSL. Fifty state legal. 570 lift 118 pope separation. They accepted they sold wrong cam for truck and out giving me a full refund plus labor. I'm going to put the torque cam in and get her tuned. Thanks for all you great info !! Richard you have answered a lot of questions for me
My question is what's the best cam for a 6.2 with a 3.0 supercharger?
Best cam to achieve what? Lots of things to consider when choosing a cam
@richardholdener1727 (The maximum amount of horsepower without blowing its internals. I'm new to this, and I want to have my engine built to withstand being literally beat the shit out of lol
How will truck Norris work with boost? Does it play nice with a stock converter?
WORKS WELL WITH BOOST
Thank you for all your hard work Richard! Thinking about using one of these in my autocross build
Just a thought - what about a "other guys" LS cam test? We're all familiar with Comp and BTR but what other great yet lesser known cams are out there and how do they compare?
Wondering about these cams, but in a 6.2 instead of 5.3? Would the extra displacement, head flow, and compression change this comparison between cams? I get that the 5.3 is way more common and cheaper, but cam comparisons for the 6.2 truck engine is way harder to find...
same results-just start and end higher power-slightly earlier cross over point
@@richardholdener1727 Thanks Richard... Last question: I saw you did some LS3 cam comparisons... Have you looked at any of the truck specific cams for that engine (L92)? I'm looking at TSP's specific L92 truck cams, they have more duration and lift but a wider LSA than this TN cam... I know the wider lobes and increased lift would make more top end, but what about the lower RPM midrange? Do you think the TN would actually be better with it's narrower LSA? If not, I'd like more top end but not if I have to sacrifice much down low.
Very well put together presentation. Ty
How do you think it would run in the 5.7 ls1? That curve looks awesome
it was also tested on a 5.7L-see the other Truck Norris video
Nice. Now, vvt please.