Excellent video Eric. Highlights that a camshaft is very combination specific. What works poorly in one combination, can be really good in another. Still, GPI and NK Performance did really well. Charlie's intake certainly made a difference as well
Love the cam challenge! excellent work, Eric. Looking forward to the old cast sbc heads in the future. Merry Christmas! edit: getting this book / become member as soon as budget permits, after holidays.
If I understand correctly, larger headers had in fact been tested with a few cams while making fairly insignificant changes in the results. I believe he stated this in his exhaust video the other day. at PRI and even at the beginning of this very video. If, that would be the true reason, then the new head, intake and header package would have drastically different results with the increased exhaust duration no longer being that beneficial. If that’s the case then a number of those creators / contestants whom made those claims should jump the towards the top of the list if they too are granted a test with this package. As of now it seems as though the top few finishers still may dominate the leaderboard indicating that exhaust where not the issue for most cams and longer duration is just plain old more beneficial.
This is the conversation I want to have! I have spent a silly amount of time staring at all the cam specs and the thing that stood out to me was that the engine wanted a lot of duration split. It wasn't even the larger duration per lobe that it preferred, it was the 20-ish degree split. I speculate that if the rpm range of the test was raised that an even greater split would dominate and conversely if the rpm range of the test were lowered it would less favor the split, but who knows? I find it really interesting to think about though.
I made 790 HP with a set of Schoenfeld 1-3/4 - 1-7/8 tri-y step headers. I ran extensive 1D sims before ordering and those headers made much better average HP and torque while edging out the shop's 2 step 4-1 header and their other LS headers. It's gas dynamics and every aspect of performance save for combustion efficiency can be best understood as pressure differentials from atmospheric intake pressure to spent exhaust gases reentering the atmosphere. I'm not much of a pushrod v8 guy as they don't make high specific outputs compared to 4 vpc engines, but the physics are all the same. That's how I get engine work. I should have entered a cam in the LS challenge, but I would have had to do so without a full dataset to work with. The two pieces of software I use are only $400 and $200(camshaft lobe plugin) but the ability to see changes in the exhaust system is priceless.
I love Me and My RC!!! Maryville TN. RC stuff is always the cheapest. Sunkist and A&W root beer is also RC brands....I'm waiting for you to do this challenge on a 406 sbc
We Can’t fully assume that these rank changes are definitive unless we are to check a number of other cams. Although we assume that the cams which we had thought should have performed better had in fact done so, it doesn’t necessarily mean that other cams wouldn’t have jumped drastically ahead off all them with its rank. The chance is VERY small but, what we learned so far tells us this is very much possible. Finishing order number 8 or 15 could essentially be number 1. A number of contestants claimed the choked exhaust through them for a loop and they would have done better if only a bit more ex duration to compensate for tiny headers. With the new package there’s a number of new variables that may have found surprising results. Checking just the top 5 only tells us they had rearranged in order among themselves. What we learned validates some things but also highlights the fact that we all got more learning to do.
So the Afr LS3 heads are the top heads? The AFR Mongoose heads? The new canted valve heads you talked about from PRI may flow more. And yes I bought the monster LS book! It’s awesome!! I have all the sbc books, I don’t have the big block and 421 sbc testing. Books are great!!! I love RC cola!!!
Awesome 👍😎 Hey anyone talk to NK Performance lately? Purchased a camshaft from them and we haven't heard back . No response on calls or emails. Anyways merry Xmas 🎄 everyone. Thank you Eric great information as always sir
I mean I am sure it's cool to see the difference but typically if you have a engine that is 11:1 compression it should be 91 or 93 octane pump gas friendly for the most part
You would be mistaken to think that 11to1 comp is auto. Compatible with 91-93 octane gas. Cranking comp. Can make or brake an engines tolerance to detinate
@@ronnieraines3975 I mean Eric does it to his engines but I didn't say all engine I am saying it could for the most part meaning it doesn't apply to all
Interesting for sure to see the difference swapping parts out make with those cams. Definitely made a HUGE difference. But it's also somewhat to be expected. And yeah, we still got RC Cola in the South in different states. AL, TN, and others.
Awesome data. Thanks for doing all that work and sharing. In my combo I'd take the BTR7 camshaft all day over the others as my combo runs 6000 to 7300 rpms at the track.
I have a set of those heads and they always shine in comparisons even ones with similar specs in head comparisons. I may be wrong but they can support up to a 454, which I have them on. 740hp @ 6400 650lbs@ 5200. Supposedly Tony Mamo had a hand in designing them. Im running the super Vic intake though and a 4500 terminator setup. Kind of want to try the Holley intake now 😢
Those Mongoose heads are listed as being 260cc runner. Doesn't that seem like a WHOLE LOTTA Port, even for a 408.... especially for the low lift flow numbers those heads have ? They look insane on paper. I am posting this 6mins in and can't wait to see the results. I was really hoping that you could have also re-tested Brian Salter's Camshaft, since he hit a high mark in 1 of your tests previously, just not the total for the competition. LS3 260cc 'Mongoose Heads' = 293 I / 207 E @ 0.400" lift, 366 I / 248 E @ 0.600" lift ..all the way up to 384 I / 255 E @ 0.700" lift, gaining every step, no reversion, These are my next heads.
Salter was not the high mark. nk performance was. Salter was second in one category and lower than 10th in the other categories. 260cc seems big but the runner is longer than standard sbc head.
Idea ? After holidays install some massive lift/duration camshafts so your head porting can shine, to take advantage of all the flow in a drag race type setting , peak hp trq , just an idea
Merry Christmas Eric! Great year of videos! Here's to an even better (and more profitable) 2025! Is the data available in the link from the Cam Challenge?
I forgot to answer this in California my dad said yes we did but it is hard to find i haven't seen 1 in years because i mean I dont really look for it but at yeah in California we do
We’ve got rc here in ky, do you have ale8one in ok? Just curious. It’s made here in Winchester ky, sometimes better known as Winchester creek water lol.
I live in California and you can get rc. Cola it's just not very common. I can remember as a kid walking home from the junior high. I would pass the laundromat and inside the laundry Mat. There was a soda machine that sold r c cola
Merry Christmas Eric are you doing anything fun for Christmas Day or something. And sweet good stuff on the camshaft I will say 1 think funny and again I know it's my machine shop guy he had a camshaft for me and I didn't pick it because it had no spec other than he said oh yeah 630 I go I don't want it he goes that cam came off a race winning sprint and I go so did this camshaft but at least this one was cam doctored. So he thing he can pull any random camshaft without spec and say it will work with any engine ok sure lol. But anyways great way to test camshaft this is very cool. And have fun during Christmas
I would love to send you my heads cam and intake manifold also rockers because its a solid roller cam also carb because its a alcohol carb. Are you interested in testing my heads cam and intake combo ? 11 degree cylinder heads
It would be interesting to see 5 different sets of heads tested with all 23 cams to see how things change... not cheep for sure. So each subscriber should offer to donate $100.00 each to make it happen. 😂
NKs With A 110LSA I Think Would Have Taken 1st Again. Increased Compression Slightly Widens The Optimal LSA As Well As The Higher Low Lift Coefficient Of Discharge Of The New Heads... Yes I'm A DV hahahahaha
Excellent video Eric. Highlights that a camshaft is very combination specific. What works poorly in one combination, can be really good in another. Still, GPI and NK Performance did really well. Charlie's intake certainly made a difference as well
Excellent work Eric! Proof once again that an engine is an entire system that has to work together
I know what I learned.. these guys know what they are doing. Great job everyone!
This actually ties in beautifully with the stuff you guys talked about at PRI.
Thanks for the Christmas present lol! Very interesting stuff, I think it shows that these cams all were worthy of their top-tier finishes.
Merry Christmas 🎁🎄, and thank you for all the great information! Your channel is like Christmas for racers every week!
Love the cam challenge! excellent work, Eric. Looking forward to the old cast sbc heads in the future. Merry Christmas! edit: getting this book / become member as soon as budget permits, after holidays.
We have RC Cola in Auckland NZ
Is Eric tryna break his toys again?? Keep it up and Santa's gonna fill your sticking with engine sludge, Mr.!
Great job with the cam challenge, Eric.
The guys that did the best are the ones who realized that the smaller header was going to need more exhaust duration.
If I understand correctly, larger headers had in fact been tested with a few cams while making fairly insignificant changes in the results. I believe he stated this in his exhaust video the other day. at PRI and even at the beginning of this very video.
If, that would be the true reason, then the new head, intake and header package would have drastically different results with the increased exhaust duration no longer being that beneficial. If that’s the case then a number of those creators / contestants whom made those claims should jump the towards the top of the list if they too are granted a test with this package. As of now it seems as though the top few finishers still may dominate the leaderboard indicating that exhaust where not the issue for most cams and longer duration is just plain old more beneficial.
This is the conversation I want to have! I have spent a silly amount of time staring at all the cam specs and the thing that stood out to me was that the engine wanted a lot of duration split. It wasn't even the larger duration per lobe that it preferred, it was the 20-ish degree split. I speculate that if the rpm range of the test was raised that an even greater split would dominate and conversely if the rpm range of the test were lowered it would less favor the split, but who knows? I find it really interesting to think about though.
I made 790 HP with a set of Schoenfeld 1-3/4 - 1-7/8 tri-y step headers. I ran extensive 1D sims before ordering and those headers made much better average HP and torque while edging out the shop's 2 step 4-1 header and their other LS headers. It's gas dynamics and every aspect of performance save for combustion efficiency can be best understood as pressure differentials from atmospheric intake pressure to spent exhaust gases reentering the atmosphere.
I'm not much of a pushrod v8 guy as they don't make high specific outputs compared to 4 vpc engines, but the physics are all the same. That's how I get engine work.
I should have entered a cam in the LS challenge, but I would have had to do so without a full dataset to work with.
The two pieces of software I use are only $400 and $200(camshaft lobe plugin) but the ability to see changes in the exhaust system is priceless.
@@ToddWright2Does that mean you model a lot of turbo headers?
I love Me and My RC!!! Maryville TN. RC stuff is always the cheapest. Sunkist and A&W root beer is also RC brands....I'm waiting for you to do this challenge on a 406 sbc
Northern Kansas here, yep, favorite soda is the RC
What's your opinion of Moon Pies?😊
Great stuff Eric! Thank you and Merry Christmas!
We Can’t fully assume that these rank changes are definitive unless we are to check a number of other cams. Although we assume that the cams which we had thought should have performed better had in fact done so, it doesn’t necessarily mean that other cams wouldn’t have jumped drastically ahead off all them with its rank. The chance is VERY small but, what we learned so far tells us this is very much possible. Finishing order number 8 or 15 could essentially be number 1. A number of contestants claimed the choked exhaust through them for a loop and they would have done better if only a bit more ex duration to compensate for tiny headers. With the new package there’s a number of new variables that may have found surprising results. Checking just the top 5 only tells us they had rearranged in order among themselves. What we learned validates some things but also highlights the fact that we all got more learning to do.
So the Afr LS3 heads are the top heads? The AFR Mongoose heads?
The new canted valve heads you talked about from PRI may flow more.
And yes I bought the monster LS book! It’s awesome!!
I have all the sbc books, I don’t have the big block and 421 sbc testing. Books are great!!!
I love RC cola!!!
Awesome 👍😎 Hey anyone talk to NK Performance lately? Purchased a camshaft from them and we haven't heard back . No response on calls or emails. Anyways merry Xmas 🎄 everyone. Thank you Eric great information as always sir
Will you port my cast iron heads?
Looks like that bigger BTR cam would be the trick for that engine with 1.8 rockers. Especially so with even more compression.
Erick, you really need to check the cranking compression on all these cams, and Merry Christmas to all and all a good night.
I was interested to know that as well. I'd like to know the psi on them to see what was pump gas friendly for street use.
I mean I am sure it's cool to see the difference but typically if you have a engine that is 11:1 compression it should be 91 or 93 octane pump gas friendly for the most part
You would be mistaken to think that 11to1 comp is auto. Compatible with 91-93 octane gas. Cranking comp. Can make or brake an engines tolerance to detinate
@@ronnieraines3975 I mean Eric does it to his engines but I didn't say all engine I am saying it could for the most part meaning it doesn't apply to all
Merry Christmas!🎄
YES! I've actually been waiting for this, & I'm not even an LS guy.
Interesting for sure to see the difference swapping parts out make with those cams. Definitely made a HUGE difference. But it's also somewhat to be expected.
And yeah, we still got RC Cola in the South in different states. AL, TN, and others.
Awesome data. Thanks for doing all that work and sharing. In my combo I'd take the BTR7 camshaft all day over the others as my combo runs 6000 to 7300 rpms at the track.
Good info thanks Erik!
Merry Christmas to you and your family
Merry Christmas!!
We used to have RC cola when i was a kid. You couldnt get it in supermarkets but Beckers convience stores always had it
I have a set of those heads and they always shine in comparisons even ones with similar specs in head comparisons. I may be wrong but they can support up to a 454, which I have them on. 740hp @ 6400 650lbs@ 5200. Supposedly Tony Mamo had a hand in designing them. Im running the super Vic intake though and a 4500 terminator setup. Kind of want to try the Holley intake now 😢
I know a guy who could help with the Holley. Thanks
Those Mongoose heads are listed as being 260cc runner. Doesn't that seem like a WHOLE LOTTA Port, even for a 408.... especially for the low lift flow numbers those heads have ? They look insane on paper. I am posting this 6mins in and can't wait to see the results. I was really hoping that you could have also re-tested Brian Salter's Camshaft, since he hit a high mark in 1 of your tests previously, just not the total for the competition. LS3 260cc 'Mongoose Heads' = 293 I / 207 E @ 0.400" lift, 366 I / 248 E @ 0.600" lift ..all the way up to 384 I / 255 E @ 0.700" lift, gaining every step, no reversion, These are my next heads.
Salter was not the high mark. nk performance was. Salter was second in one category and lower than 10th in the other categories. 260cc seems big but the runner is longer than standard sbc head.
Sure. But "what if" is a very deep rabbit hole. Cam submissions were per data, which is as fair as anything could be.
Idea ? After holidays install some massive lift/duration camshafts so your head porting can shine, to take advantage of all the flow in a drag race type setting , peak hp trq , just an idea
Great info!
Merry Christmas Eric! Great year of videos! Here's to an even better (and more profitable) 2025!
Is the data available in the link from the Cam Challenge?
No
HP & TQ graph would be nice
It’s in the video
I forgot to answer this in California my dad said yes we did but it is hard to find i haven't seen 1 in years because i mean I dont really look for it but at yeah in California we do
Always have R.C. in my area!
Marry Christmas
We’ve got rc here in ky, do you have ale8one in ok? Just curious. It’s made here in Winchester ky, sometimes better known as Winchester creek water lol.
I live in California and you can get rc. Cola it's just not very common. I can remember as a kid walking home from the junior high. I would pass the laundromat and inside the laundry Mat. There was a soda machine that sold r c cola
Stranger Things🤘🤘🤘
Have a Merry Christmas Eric and family.
It's all variable
Merry Christmas Eric are you doing anything fun for Christmas Day or something. And sweet good stuff on the camshaft I will say 1 think funny and again I know it's my machine shop guy he had a camshaft for me and I didn't pick it because it had no spec other than he said oh yeah 630 I go I don't want it he goes that cam came off a race winning sprint and I go so did this camshaft but at least this one was cam doctored. So he thing he can pull any random camshaft without spec and say it will work with any engine ok sure lol. But anyways great way to test camshaft this is very cool. And have fun during Christmas
Wonder if they would’ve changed though and ran a different cam for the larger heads?
RC cola readily available in central east Alabama
No RC around here Pueblo,CO
Maybe maybe not. The heads impact what cam will work best. But the change in the heads would have to be a significant change I think.
5:01 So your about to show us that a head with good low lift flow makes more power😮
I would love to send you my heads cam and intake manifold also rockers because its a solid roller cam also carb because its a alcohol carb. Are you interested in testing my heads cam and intake combo ? 11 degree cylinder heads
It would be interesting to see 5 different sets of heads tested with all 23 cams to see how things change... not cheep for sure. So each subscriber should offer to donate $100.00 each to make it happen. 😂
NKs With A 110LSA I Think Would Have Taken 1st Again. Increased Compression Slightly Widens The Optimal LSA As Well As The Higher Low Lift Coefficient Of Discharge Of The New Heads... Yes I'm A DV hahahahaha
My takeaway on the cam challenge was: the younger generation gets IT