I love these Chevy builds. I’ve done a couple 400 builds for my 83 Monte Carlo. Might not be impressive on the drag strip but out on the open highway nothing can touch it. Always enjoy watching people freak out over the car loosing traction at 65mph because I decided to get on it. Always wanted to do a progressive nitrous setup on it. I believe that would help the stock sleeper idea.
Not sure who wouldn't find this impressive at the drag strip, but not all of us have to live on LS's and turbos, some of us still like seeing what we can do with N/A and using our heads. This engine is a low 11, high 10 second engine in anything but the heaviest cars at the track. Look at it, and with a Q-Jet, that's pretty damned impressive to me!
Looking at the oil filter in the sunlight is always your best bet. Many things show up in the sunlight that don't seem to show up under artificial light, great advice
Badass sleeper motah!! Yep, flipin' the lid, we knew it was a massive hp boost 35+ years ago, and still holds true today! That's the kind of hp gain you can absolutely feel by the seat of your pants. 💪
Depends a bit on the filter housing design, with a stock filter it can choke it a bit with some lip shapes - the real advantage is when you run a taller filter in the housing, whether flipped or not 👍😎
@@UnityMotorSportsGarage ,,,,,,,,,,,,,,,,,,,The filter steel base is most important if it has the corvette style high radius up to the carb air horn,,,,,also ya need a K / N style filter ......
Flipping the lid did not add 25hp, it simply removed the snorkel's restriction. Would have had the same effect going with an aftermarket 4" open filter. Great video guys!
@@UnityMotorSportsGarage Havent seen one of those in awhile. Like messing with older oddball intakes. ANyone can buy a brand new one Spent many hours porting a 7530 Team G, flowbench time etc. Just right on my 383....great midrange and strong top end not too much tq down low so it dont spin. Love to see yours with a 300-36 and a dually 454 stock air cleaner. Torque curve is perfect for a driver it will make huge tire smoking torque everywhere. Thats what makes a street car fun Use some 20-22 in case Superturbos it will be quiet and quick. Love sleepy stuff
I appreciate the video ..Many years ago i built or helped really build a 302 for my 68 Camaro ..part dirt track bottom end top end off a g gas car . I ran a solid lifter isky cam along with other parts. I used a HEI distributor, bronze gear . Recurved . I remember the engine pulling hard to 7800 where i had the rev limiter set . ..I learned then cylinder heads are the key to making hp .. thanks for the video
With the Q-J, double check the air flap's spring setting - Been a few decades, but IIRC it should be either 3/4, or 7/8, of a turn from JUST closing the flap - an 1/8th either way could also have been enlightening. Don't know if you did it, or if the heads you used had them, but a couple of bits of shim stock slipped down between the manifold and the heads, to block them off, can help a little by reducing the cross-heating of the manifold base.
Love the 25 ponies from the lid flip. I was doing that on my mom's 71 Demon with a slant six just for the cool sound back in 76-77 . Great stuff brother...🤓
Great video. So much good information and you guys looked like you were having fun doing it. I liked the air cleaner test but thought I would have seen a kN filter. Keep up the good work and thanks. I know you put a lot of effort and time into these videos.
Andy, I love your channel. In reference to the intake mods. I like what you did there between 5 & 7 to reduce the charge robbing there. I just wanted to remind you not to forget to do similar mods for 1 & 2 as well. There is a video of DV modifying a tunnel ram where I think he may have forgot about the 1 and 2 charge robbing, so if you would give him a friendly reminder.
I have a 1971 400 4 bolt main that ' GM was the last to machine '. and the 400 turbo trans came out of the Impala with it. and along the way I scored a pair of humpback heads that are ported. pickup only. Fort Wayne In area. No reasonable offer denied.
This is cool if you already have the 400 block to start with but the true 350 "sleeper" is the 383. The people who know wont be deceived by the valve covers alone. Cool build though and nice job on the intake and using a quadrajet carb for full incognito effect. Most builds go with holley type carbs if not efi.
Not too bad for a first run gotta start some where and go from there. The lid flip didn't surprise me I've done it many times over the years and I always could feel the difference on the street. I know the quadrajets becoming a restriction do to flow size, but the cam needs to go for a better spect one. Run it with a better cam and the quadrajet then just to see what it can do put a higher flowing spect carburetor on it. Personally I'd be willing to give up some of the power just to have that nostalgic Quadrajet sound of the secondarys kicking in, and fool everyone into thinking it's a rather stock replacement engine.
See that is exactly what we after... With this engine having an almost stock idle and when you pop the hood and see what looks to be a mismatched Single plane intake on a stock crate motor and a Q-JET people will think it's easy picking! Thanks for watching Andy
@@UnityMotorSportsGarage agreed I had a 1980 c10 with a stock appearing 350 but it was a 383 toped with a quadrajet and that thing would get it. Had the slightly loopy idle but nothing that gave it away. Most thought it was all in the exhaust I miss that truck. Looking forward to seeing more on the 408.
Wow that Q-Jet really is a performer. Great Dyno video. I knew my butt dyno was working right all those years, flipping the lid on the breather. The Sleeper is alive and working great.
I really appreciate the awesome videos. I dally drive a 85 c30. And beat the hell out of it . I put a 750 holly headers on 350 . I'm going to dial in my Mickey Thompson cross ram. For daily use. Thanks again for your knowledge. Never any valve float $$.
For such a mild cam it seems to work well, its running out of air already. Make a great cruiser or truck engine. It would be a good engine to do a rocker ratio change on to see what happens at the existing airflow.
@UnityMotorSportsGarage atleast you have engine dynos you can drive to. All we have is 'tooners' down here with drums. Actually thinking about building one.
Put the Comp Cams Beehive Spring #26918 intended for LS engine in it. Perfect for your build. AND the DUI was the right choice. I'd change the cam though.
Great job on the build guys. The manifold mods appear to be working well, and lastly I've always had good luck with the Q-Jets. You might double check the Q-Jet, it could be only a 750cfm? Look the bulge on the wall of the primaries and it's the 800cfm. One last test I would be curious what a stock Chevy or Edelbrock performer manifold Dyno numbers would look like? But that's definitely a strong sleeper motor but still nice road manners, good idle 👍👏
Yeah its an 800CFM unit. I was surprised to see it pulling vac. in the upper RPM ranges. This is going to be a nice cruiser that can sneak up on some folks.. Thanks for watching, Andy
Nice small block put that in a Vega and be a blast have a great day thanks for the inspiration I can't build cars anymore or race I'm just an old Gearhead Quadra jets are cool if you set them up right have a great day
I had the same intake with a 780 vac sec Holley (1976) on a 301 sbc, 462 heads, 12.5:1 forged pistons (330 dur solid 550) Chassis dyno at Bailey Technical St Louis, MO read 420 hp at wheels @ 7500. 65 Impala SS, P/G, 4.56 12-bolt.
Don’t know if “flipping the lid” actually did much other then giving the carb more area to draw air from instead of making the air route through the small intake hole in the filter housing. Maybe an open air filter would do the same as flipping the lid. The drawback would be loosing the sleeper look though. Love the content of actually searching for the problems instead of pushing advertisers like most shows do.
@@UnityMotorSportsGarage intake and carb alone should get close to the extra 100hp maybe a better ignition system. But it would defeat the purpose of it looking tame under the hood....
It does but it just moves the same problem to 4-2 cylinders. This only really applies to Single plane intakes as the Dual plane separates 5-7 to opposite sides of the carb Thanks for watching Andy
That's why I use MSD distributors , the are equipped with the option to lock out the machanical advance so you don't have that issue with your engine.sounds good , I have that same intake and you got me thinking about porting it like you did , thanks
D*** good video showing showing what happens when you flip the lid, but then also keep in mind when the motors in the engine bag and the hoods close. And you're sucking in all that hot air off the engine. That's also got to make things a little great video. I'd like to have a feedback on the oil pressure situation. If you guys think that's a deal at all I just didn't like to see the oil pressure drop as the RPM went. I'd like to know what oil you have in it. Thank you, Greg and the team.Thank you again
Have mike regrind it for more lift. bet the tq wouldve went up 25-35 with a performer rpm, and the hp been the same. with more average power everywhere. Nice job Guys! She's healthy, lots of fun for a street car.
@@UnityMotorSportsGarage it's the only weakness of them. But I learned from the first one I had that if you are on top of it and don't let it go to the point that it would need bored between refreshing they will last. I would like to go back to getting one in something but I have went to FOMOCO now and I don't want to go back. I have bought a rust free 1988 Mercury Cougar XR 7 from a 90 year old guy and his son. They threw a fuel tank, fuel pump, sending unit, new fuel lines and 8 new injectors in the 5..0 L and I bought it for 700$ before they scrapped it. Luckily I was at the right place at the right time and saved it. Wait until you see it, it looks like it sat in a dealership somewhere since it was new. The interior looks like the day it rolled off the show room floor. I can't wait to get it done and running. Great day to you all Andy. Sincerely John
I had a pretty similar problem with the factory hydraulic roller springs on my AFR heads with a very similarly sized camshaft. It’d lay over around 55-5600 RPM. I swapped out the cam thinking it was just the cam being too small for the engine and a single pattern to boot, then changed the springs out too. The old cam is going into a 350 with the proper springs now so I guess I’ll find out whether or not it was the springs or the cam that laid over on me.
Love the Q-Jet! Had many in the past and 3 currently (one special 800 cfm for a 455 T/A that was a $70 investment). Shocked there wasn’t a K&N under the flipped lid or a taller than factory with an extended stud bolt.
Old timer had a 71 Lemans bracket car 3750lbs 400 ram air 3 heads flat tappet solid cam headers a single plane intake and Q-Jet……… the car had a turbo400 3800 converter 3.73 gear and it ran 11.40-11.50 EVERY SINGLE pass and without me asking he said “Its the Q-Jet”. Coolest stock looking sounding car I’ve ever seen. I’m sure the F.A.S.T. Class guys know a thing or 2 about Q-Jets
Always been curious of Dino results from a q Jet carb. Back in the day when I was broke I had a 780 cfM Q jet 331 cube Small block.That pulled hard to 7000 Only reason I put that carb on there is because it was a 150 bucks at my local auto parts store rebuilt and But I was a broke 19-year-old kid the was no save up for 2 more weeks. That 69 GMC had to out an get in trouble. later saved up and put a holly 750 double pump on it. Cause my buddies are laughed at The bog quad But it actually ran better with that carb than it did the 750 holly out of the box. And it got good mileage. And every classic movie sound has that noise from the 80s All the caprice cop cars. They were great carbs as long as they sat on a good loom intake and had no fuel boil issues like the stock cast intake. I love them and the sound they make In the secondarys open. quick throttle response can't beat it.
I noticed with the lid flipped over the air cleaner is bouncing around during the pull like its not sealed. I wonder how much air was bypassing the filter.
Love the build! Single plane is killing your torque though. When I had my 383 on the dyno that is now running EFI in my Express van, I had it running a later 850 cfm Q-Jet on an untouched Performer RPM spreadbore with a Hamburger 1" Q-Jet taper spacer upside down cone shape facing the carb. It has a mild hydraulic custom roller, 271/284 @ 0.006, 218/228 @ 0.050 on a 108 LSA and 106 ICL with 0.578 lift. 11:1 static compression and aluminum heads flowing 244 @ 0.400, 274 @ 0.500 and 291 @ 0.600. Ran with 1-5/8 primary to 2.5" collector Thorley tri-ys for the Express van chassis into 2.5" collector extension. Made 520 tq @ 3,700 and 502 hp @ 5,600. I had the HEIs mechanical advance setup to give 0 advance until 1,200, 10* @ 2,400 and 16* @ 3,600 by playing with an assortment of center plates and weights. The centerplate was 353 stamped and 053 weights, running 2 medium springs from a Moroso curve kit. It liked 33* total @ 3,600 and AFR was in the mid 12s. The 850 cfm Q-Jet saw less than 2 in/hg @ 6,200 rpm.
It would have been nice to see what a 1 inch spacer would have done for the small plenum on that intake. It seems to have a much lager effect on small blocks than the big blocks. What do you think a nicely prepped 850 would have done. Maybe over 500 HP. 950 3 barrel was good for a tenth in a 69 Buick Skylark with a 455. Good test.
@@UnityMotorSportsGarage I was on the team that won the big block class. We completed about 8 years. A couple of years before that we got 3rd in the street class. Great times.
I was about to comment on how smooth the idle was when you went outside while running it. Definitely sleeper quality. Do you think the spreadbore benefits from the floor base dam as much as a square bore would? I wonder if the dam would block some of the rear secondary air from reaching the front four cylinders. Did you have individual cylinder fuel monitoring on the dyno?
I wonder about the Wieand Team-G single plain(?) I have a couple of them just because of what you stated; the path is pretty straight to the intake ports!
slapped together a 406, a set vortec heads and full rollers,It has a magnum 280 cam.edelbrock performer and a holley street avenger. not sure what it makes besides tire smoke.
I love these Chevy builds. I’ve done a couple 400 builds for my 83 Monte Carlo. Might not be impressive on the drag strip but out on the open highway nothing can touch it. Always enjoy watching people freak out over the car loosing traction at 65mph because I decided to get on it. Always wanted to do a progressive nitrous setup on it. I believe that would help the stock sleeper idea.
Not sure who wouldn't find this impressive at the drag strip, but not all of us have to live on LS's and turbos, some of us still like seeing what we can do with N/A and using our heads. This engine is a low 11, high 10 second engine in anything but the heaviest cars at the track. Look at it, and with a Q-Jet, that's pretty damned impressive to me!
What a fantastic video! This is the type of real world content your average working stiff can really relate to. Kudos my friend.
Thanks for the kind words! Im glad you enjoyed it
Andy
Looking at the oil filter in the sunlight is always your best bet. Many things show up in the sunlight that don't seem to show up under artificial light, great advice
Absolutely! You can see so much more in the sunlight
Thanks for watching
Andy
Also I meant to say looking at the oil after draining it
Badass sleeper motah!!
Yep, flipin' the lid, we knew it was a massive hp boost 35+ years ago, and still holds true today! That's the kind of hp gain you can absolutely feel by the seat of your pants. 💪
Most definitely and it sounds cool... Lol
Thanks for watching
Andy
Depends a bit on the filter housing design, with a stock filter it can choke it a bit with some lip shapes - the real advantage is when you run a taller filter in the housing, whether flipped or not 👍😎
@@UnityMotorSportsGarage ,,,,,,,,,,,,,,,,,,,The filter steel base is most important if it has the corvette style high radius up to the carb air horn,,,,,also ya need a K / N style filter ......
@@ThomasELeClair Agree!! Work so much better than those k and n elements that dont use a lid at all. Moroso? Makes a lid that mirrors the base shape
Wow! What a runner. Very impressive. 🏁
Thanks Tony! I can't wait to hit the track with it now...
Andy
Flipping the lid did not add 25hp, it simply removed the snorkel's restriction. Would have had the same effect going with an aftermarket 4" open filter. Great video guys!
Your grinder work is great Andy:)
She looks really good buddy…
Huge improvement from stock…
Thanks! It has a very smooth Dyno curve which is exactly what I was after with the old Street Dominator intake
Andy
@@UnityMotorSportsGarage Havent seen one of those in awhile. Like messing with older oddball intakes. ANyone can buy a brand new one
Spent many hours porting a 7530 Team G, flowbench time etc.
Just right on my 383....great midrange and strong top end not too much tq down low so it dont spin.
Love to see yours with a 300-36 and a dually 454 stock air cleaner.
Torque curve is perfect for a driver it will make huge tire smoking torque everywhere. Thats what makes a street car fun
Use some 20-22 in case Superturbos it will be quiet and quick. Love sleepy stuff
LOVE ME sum old old school 400 SB Chevy!!! hell yeah!!!
That was hilarious! 25 horse 😂 great job and keep us posted. Love this project
Thanks for your videos and content brother every time I see a new one it keeps me motivated to work on my junk .
Thank you
I appreciate the video ..Many years ago i built or helped really build a 302 for my 68 Camaro ..part dirt track bottom end top end off a g gas car . I ran a solid lifter isky cam along with other parts. I used a HEI distributor, bronze gear . Recurved . I remember the engine pulling hard to 7800 where i had the rev limiter set . ..I learned then cylinder heads are the key to making hp .. thanks for the video
Absolutely the heads are KEY to making power...
Thanks for watching
Andy
Lot of difference with the lid flipped, thanks for sharing, all the best to yous and your loved ones
Proves what every 17 year old dude in 1985 thought was right.
Really these guys are just learning this now
Wow! That sounds so good! Thank you for sharing the good stuff.
I love "sleeper motors and we don't see enough of these.
They are engines that make sense for the street, and they perform better too.
I fully agree.. this is a well balanced street engine that packs a punch.
Andy
DV
“To tame the Beast, you must know the Beast.”
YUP...
Andy
Yes
With the Q-J, double check the air flap's spring setting - Been a few decades, but IIRC it should be either 3/4, or 7/8, of a turn from JUST closing the flap - an 1/8th either way could also have been enlightening.
Don't know if you did it, or if the heads you used had them, but a couple of bits of shim stock slipped down between the manifold and the heads, to block them off, can help a little by reducing the cross-heating of the manifold base.
Flipped lid for the win!
Flipped Lid Gang!
Andy
Love the 25 ponies from the lid flip. I was doing that on my mom's 71 Demon with a slant six just for the cool sound back in 76-77
. Great stuff brother...🤓
I thought it was pretty cool to see that! Thanks for watching and I'm glad you enjoyed it
Andy
Did that to Dads 73 2bbl Impala late 70s....then slid underneath and drilled some holes in the muffler. He was not happy.
Great video. So much good information and you guys looked like you were having fun doing it. I liked the air cleaner test but thought I would have seen a kN filter. Keep up the good work and thanks. I know you put a lot of effort and time into these videos.
Paper would work just as well.
I see low 11 second potential there in a properly set up ride! Great job guys.
Thanks for the kind words!
Andy
Hell yes it's gonna make power! ...........quite a bit more than before anyway. ( Especially if the heads were ported to David Vizard's spec's! )
Andy, I love your channel. In reference to the intake mods. I like what you did there between 5 & 7 to reduce the charge robbing there. I just wanted to remind you not to forget to do similar mods for 1 & 2 as well. There is a video of DV modifying a tunnel ram where I think he may have forgot about the 1 and 2 charge robbing, so if you would give him a friendly reminder.
I have a 1971 400 4 bolt main that ' GM was the last to machine '. and the 400 turbo trans came out of the Impala with it. and along the way I scored a pair of humpback heads that are ported. pickup only. Fort Wayne In area. No reasonable offer denied.
I may be interested… not sure how to contact you from here though
@@jimmy_olds if I know your here when I am I'll put my # up long enough for you
@@jimmy_olds If I know your here the same time I am I'll post my # long enough for you
@@jimmy_olds My 3rd time posting this message. If you are here at the same time I will post my #
@@jimmy_olds Sucks when the FS guys never respond.
Loved every minute of this one guys. Great job on that beast...... I mean snoozer;)
Thanks Tom! I'm glad you enjoyed it
Andy
@@UnityMotorSportsGarage Andy. What did DV make the turtle in the intake out of??
We use Goodson Intake Epoxy
Andy
Great video appreciate it Andy.
Thanks I'm glad you enjoyed it
Andy
This is cool if you already have the 400 block to start with but the true 350 "sleeper" is the 383. The people who know wont be deceived by the valve covers alone. Cool build though and nice job on the intake and using a quadrajet carb for full incognito effect. Most builds go with holley type carbs if not efi.
How do you fool them without the big balancer giving it away? Might as well go with a 400 if you're going to put a 400 crank in a 350.
Very nice Andy.
You guys built a nice engine.
Well done. 👍👍🇺🇸
I remember that big 4 barrel sound also coming out of the dodge Aspen Cop cars (Thermoquads) as they raced towards us young punks!
Not too bad for a first run gotta start some where and go from there. The lid flip didn't surprise me I've done it many times over the years and I always could feel the difference on the street. I know the quadrajets becoming a restriction do to flow size, but the cam needs to go for a better spect one. Run it with a better cam and the quadrajet then just to see what it can do put a higher flowing spect carburetor on it. Personally I'd be willing to give up some of the power just to have that nostalgic Quadrajet sound of the secondarys kicking in, and fool everyone into thinking it's a rather stock replacement engine.
See that is exactly what we after... With this engine having an almost stock idle and when you pop the hood and see what looks to be a mismatched Single plane intake on a stock crate motor and a Q-JET people will think it's easy picking!
Thanks for watching
Andy
@@UnityMotorSportsGarage agreed I had a 1980 c10 with a stock appearing 350 but it was a 383 toped with a quadrajet and that thing would get it. Had the slightly loopy idle but nothing that gave it away. Most thought it was all in the exhaust I miss that truck. Looking forward to seeing more on the 408.
@@chevyfan82 you will get to see it in action next month at the track!
Andy
I have a few of these intakes.
Love old school intakes. Loaned out my then brand new Holley 300-36 never got it back then Holley stopped making them. Fav dual plane of all time
Wow that Q-Jet really is a performer. Great Dyno video. I knew my butt dyno was working right all those years, flipping the lid on the breather. The Sleeper is alive and working great.
Nice work guys those are decent numbers for sure..
Thanks for the kind words and for watching!
Andy
That made my night thank you
480hp
King David would say it’s kids stuff.
But it’s still a Beast almost 500hp
480hp
This was a kid's kind of build..
The story isn't over yet!
Andy
I really appreciate the awesome videos. I dally drive a 85 c30. And beat the hell out of it . I put a 750 holly headers on 350 . I'm going to dial in my Mickey Thompson cross ram. For daily use. Thanks again for your knowledge. Never any valve float $$.
I remember Dr. Air Roger Helgeson. He was in several articles in Car Craft back in the day.
He was a very smart guy!
Andy
I love your videos Andy!
Thanks Brother! I have always appreciated your support
Andy
I love all the best American motors period
For such a mild cam it seems to work well, its running out of air already. Make a great cruiser or truck engine. It would be a good engine to do a rocker ratio change on to see what happens at the existing airflow.
Yeah, depending on time I have some other things I would like to do with it.. Dyno time goes by SO FAST.. 😆
Andy
@UnityMotorSportsGarage atleast you have engine dynos you can drive to. All we have is 'tooners' down here with drums. Actually thinking about building one.
Pretty nice considering it has such a small cam, with all of the accessories and in the car it will be a solid 430 hp
With big tq comes in early. BB power without the weight. Love it
There is a Way to remove the restriction on the Quadrajet remove the Choke completely gives you another 20CFM on the Primary!
Ive removed them on a few carbs and felt 0 difference
Even in mild weather here love a well setup choke
@@gordocarbo
I've tuned several Quadrajets that would prove otherwise and not have to have a choke fire instantly even on coldest days no bog Gone...
Put the Comp Cams Beehive Spring #26918 intended for LS engine in it. Perfect for your build. AND the DUI was the right choice. I'd change the cam though.
DUI didn't make the most power...
Andy
@@UnityMotorSportsGarage Try again.
@@autonomous_collective you buy the Dyno time and I will test... But we backed up the runs I will have a full video on it upcoming
Andy
@@UnityMotorSportsGarage Jones knows his stuff Id leave it in there.
Loved that video.
Great video..like the distributor comparison..and of coarse the bad ass air cleaner..flip the lid...great little gm goodwrench engine..lol
I think it really looks the part with the Q-JET and stock air cleaner... Thanks for watching I'm glad you enjoyed it
Andy
great video series, I am loving this.
I'm glad you enjoy it thanks for watching
Andy
I wonder how the 4-7 swap cams effect intake layouts on different brands be a nice test .
I love the Target 350 decals on the stock tin valve covers stealthy!!!
Love the longer video!
I’m running a Progression Ignition distributor on my 353 small block in my ‘71 Camaro. Love it!
I love David so much pass it on from rex Warren
Great job on the build guys. The manifold mods appear to be working well, and lastly I've always had good luck with the Q-Jets. You might double check the Q-Jet, it could be only a 750cfm? Look the bulge on the wall of the primaries and it's the 800cfm. One last test I would be curious what a stock Chevy or Edelbrock performer manifold Dyno numbers would look like? But that's definitely a strong sleeper motor but still nice road manners, good idle 👍👏
Yeah its an 800CFM unit. I was surprised to see it pulling vac. in the upper RPM ranges. This is going to be a nice cruiser that can sneak up on some folks..
Thanks for watching,
Andy
Nice small block put that in a Vega and be a blast have a great day thanks for the inspiration I can't build cars anymore or race I'm just an old Gearhead Quadra jets are cool if you set them up right have a great day
That engine in a light car would be awesome!
Andy
Bigger carb would get U more hp, but for a heavy street vehicle, this setup would be massive fun, light to light!👍
Stay Tuned!!!
Andy
@@UnityMotorSportsGarage wouldn't miss a minute ! 😉
I had the same intake with a 780 vac sec Holley (1976) on a 301 sbc, 462 heads, 12.5:1 forged pistons (330 dur solid 550)
Chassis dyno at Bailey Technical St Louis, MO read 420 hp at wheels @ 7500.
65 Impala SS, P/G, 4.56 12-bolt.
Don’t know if “flipping the lid” actually did much other then giving the carb more area to draw air from instead of making the air route through the small intake hole in the filter housing. Maybe an open air filter would do the same as flipping the lid. The drawback would be loosing the sleeper look though. Love the content of actually searching for the problems instead of pushing advertisers like most shows do.
My guess of 480 hp 500 ft lb of torque was pretty close! Would like to see what it would do with a victor jr intake and 830 hp Holley carb!
Yup. It's dying for a bigger carb.
Im willing to bet with a cam, carb and intake swap we could get near 100hp more
Andy
As is you’ve built a sneaky street cruiser with all that torque and the 700r4 transmission first gear traction will be the biggest challenge
@@UnityMotorSportsGarage intake and carb alone should get close to the extra 100hp maybe a better ignition system. But it would defeat the purpose of it looking tame under the hood....
@@UnityMotorSportsGarage ,,,,,,,,,,,give those heads to DV.........and use a manifold he approves....
While all those other car channels are trying to flip the script with antics, you guys are out there flipping the lid on real horsepower.
I like that! We just like keeping it real..
Thanks for watching
Andy
Notice they dynoed it with 160 + coolant temps too. Realistic and totally possible to duplicate in a street car.
Wow!!! Flipping the air cleaner lid on a Quadrajet really does work!!! Great job on all counts guys!!!
IMpressed with the Qjet but I'd love to see it with a Holley 850 DP
I Love my 800 cfm Rochester on my 406 SBC just like fuel injection.
Does a 4-7 cam swap help fix the induction sequence issue of the stock firing order. In a dual plane intake is the 5-7 sequence a problem?
It does but it just moves the same problem to 4-2 cylinders. This only really applies to Single plane intakes as the Dual plane separates 5-7 to opposite sides of the carb
Thanks for watching
Andy
That thing is so cool!
Thanks! It's going to look super sneaky in Joe's Chevelle
Andy
That's why I use MSD distributors , the are equipped with the option to lock out the machanical advance so you don't have that issue with your engine.sounds good , I have that same intake and you got me thinking about porting it like you did , thanks
Good heads make all the difference
Thats still some good power for that camshaft!
There is more left in it! 😎
Andy
@@UnityMotorSportsGarage I think so too.
D*** good video showing showing what happens when you flip the lid, but then also keep in mind when the motors in the engine bag and the hoods close. And you're sucking in all that hot air off the engine. That's also got to make things a little great video. I'd like to have a feedback on the oil pressure situation. If you guys think that's a deal at all I just didn't like to see the oil pressure drop as the RPM went. I'd like to know what oil you have in it. Thank you, Greg and the team.Thank you again
Great video Andy! Any chance of future dyno action with a modern single plane? You may be able to convince me to rub on it a bit!
Have mike regrind it for more lift. bet the tq wouldve went up 25-35 with a performer rpm, and the hp been the same. with more average power everywhere. Nice job Guys! She's healthy, lots of fun for a street car.
You are probably right but I will say that this old Street Dominator sure surprised Greg and Dennis!
Andy
@@UnityMotorSportsGarage No need for more lift.
would have been interesting to try a K&N filter element
I agree, I will say that I was shocked that the Paper filter only dropped 5hp with the flipped lid
Andy
Great Engine . I allway thought building vacuume at WOT was a sign the cam was too small
I have had two of them, great running engine. 😊
They are really good engines. I just wish the blocks were a little stronger
Andy
@@UnityMotorSportsGarage it's the only weakness of them. But I learned from the first one I had that if you are on top of it and don't let it go to the point that it would need bored between refreshing they will last. I would like to go back to getting one in something but I have went to FOMOCO now and I don't want to go back. I have bought a rust free 1988 Mercury Cougar XR 7 from a 90 year old guy and his son. They threw a fuel tank, fuel pump, sending unit, new fuel lines and 8 new injectors in the 5..0 L and I bought it for 700$ before they scrapped it. Luckily I was at the right place at the right time and saved it. Wait until you see it, it looks like it sat in a dealership somewhere since it was new. The interior looks like the day it rolled off the show room floor. I can't wait to get it done and running. Great day to you all Andy. Sincerely John
That's why it was the mainstay of GMC for over a half a century.
Absolutely...
Andy
I had a pretty similar problem with the factory hydraulic roller springs on my AFR heads with a very similarly sized camshaft. It’d lay over around 55-5600 RPM. I swapped out the cam thinking it was just the cam being too small for the engine and a single pattern to boot, then changed the springs out too. The old cam is going into a 350 with the proper springs now so I guess I’ll find out whether or not it was the springs or the cam that laid over on me.
Excellent
Awesome video. I wonder how well that turtle would work with other single plane intake designs?
I've seen some where it works well like in this case and others not so much..
Andy
Great power for the size of the cam good job
Love the Q-Jet! Had many in the past and 3 currently (one special 800 cfm for a 455 T/A that was a $70 investment). Shocked there wasn’t a K&N under the flipped lid or a taller than factory with an extended stud bolt.
Im now a Believer in the Q-Jet.. On the K&N we decided to just run a Paper filter to continue the sleeper look
Thanks for watching
Andy
Plumb. A. 100 hp. Nos. Under. China. Rail. In. Rear. And. Really. Rock. Somebodys. World. Great. Sleeper. Build
Old timer had a 71 Lemans bracket car 3750lbs 400 ram air 3 heads flat tappet solid cam headers a single plane intake and Q-Jet……… the car had a turbo400 3800 converter 3.73 gear and it ran 11.40-11.50 EVERY SINGLE pass and without me asking he said “Its the Q-Jet”. Coolest stock looking sounding car I’ve ever seen. I’m sure the F.A.S.T. Class guys know a thing or 2 about Q-Jets
Curious to see what the engine would do with a air gap
I would also!
Andy
Always been curious of Dino results from a q Jet carb. Back in the day when I was broke I had a 780 cfM Q jet 331 cube Small block.That pulled hard to 7000 Only reason I put that carb on there is because it was a 150 bucks at my local auto parts store rebuilt and But I was a broke 19-year-old kid the was no save up for 2 more weeks. That 69 GMC had to out an get in trouble. later saved up and put a holly 750 double pump on it. Cause my buddies are laughed at The bog quad But it actually ran better with that carb than it did the 750 holly out of the box. And it got good mileage. And every classic movie sound has that noise from the 80s All the caprice cop cars. They were great carbs as long as they sat on a good loom intake and had no fuel boil issues like the stock cast intake. I love them and the sound they make In the secondarys open. quick throttle response can't beat it.
I noticed with the lid flipped over the air cleaner is bouncing around during the pull like its not sealed. I wonder how much air was bypassing the filter.
What size is the camshaft please?
It is listed in the video
@@josephdavis6198 I must have missed it
Love the build! Single plane is killing your torque though. When I had my 383 on the dyno that is now running EFI in my Express van, I had it running a later 850 cfm Q-Jet on an untouched Performer RPM spreadbore with a Hamburger 1" Q-Jet taper spacer upside down cone shape facing the carb. It has a mild hydraulic custom roller, 271/284 @ 0.006, 218/228 @ 0.050 on a 108 LSA and 106 ICL with 0.578 lift. 11:1 static compression and aluminum heads flowing 244 @ 0.400, 274 @ 0.500 and 291 @ 0.600. Ran with 1-5/8 primary to 2.5" collector Thorley tri-ys for the Express van chassis into 2.5" collector extension. Made 520 tq @ 3,700 and 502 hp @ 5,600. I had the HEIs mechanical advance setup to give 0 advance until 1,200, 10* @ 2,400 and 16* @ 3,600 by playing with an assortment of center plates and weights. The centerplate was 353 stamped and 053 weights, running 2 medium springs from a Moroso curve kit. It liked 33* total @ 3,600 and AFR was in the mid 12s. The 850 cfm Q-Jet saw less than 2 in/hg @ 6,200 rpm.
It would have been nice to see what a 1 inch spacer would have done for the small plenum on that intake. It seems to have a much lager effect on small blocks than the big blocks. What do you think a nicely prepped 850 would have done. Maybe over 500 HP. 950 3 barrel was good for a tenth in a 69 Buick Skylark with a 455. Good test.
The QJET had 1" open spacer
Thanks for watching
Andy
Doesnt need any more carb than what it has
I've seen the Dyno operator many years at the Engine Masters challenge.
Yes, you are right he was a Competitor in it.. We are looking to bring Dyno Competitions back!
Andy
@@UnityMotorSportsGarage I was on the team that won the big block class. We completed about 8 years. A couple of years before that we got 3rd in the street class. Great times.
@stevewelborn8744 that is awesome! Greg and I are working on something... Hopefully we can pull it together
Andy
@@UnityMotorSportsGarage ,,,,,,,,,,,Where are you in North Carolina?????
I was about to comment on how smooth the idle was when you went outside while running it. Definitely sleeper quality.
Do you think the spreadbore benefits from the floor base dam as much as a square bore would? I wonder if the dam would block some of the rear secondary air from reaching the front four cylinders. Did you have individual cylinder fuel monitoring on the dyno?
What heads did you use ??
AFR COMP 195s
I love the setup that is sleeper
This was great!
man it was common knowledge around my high school that flipping the lid was worth 25hp! 😂
Love this!
Great video
I wonder about the Wieand Team-G single plain(?)
I have a couple of them just because of what you stated; the path is pretty straight to the intake ports!
I would love to find a place were to buy some goodwrench 350 valve cover decals hard to find now a days
They were extremely hard to find... Joe probably spent more than a month trying to find them!
Andy
Way cool Andy, show us more!
Hang tight... More to come! Thanks for watching
Andy
The q-jet is why the 1969 396 cu. In. 350 hp big block was a very good engine. Modified q-jet*****
Awesome 😊
Thanks for watching
Andy
Cool video for some old school sleeper stuff 👍🏻. Would like to see what cam DV recommends. Bet he could get it up over 500
Is that top rear flap on the carb opening all the way? The engine will be fun.
Yeah David the QJET is wide open.. Thanks for watching
Andy
Use the moroso oil filter screen and save your oil filter doesn't affect flow and easy to check and replace
slapped together a 406, a set vortec heads and full rollers,It has a magnum 280 cam.edelbrock performer and a holley street avenger. not sure what it makes besides tire smoke.
The fun factor is definitely there!
Thanks for watching
Andy
@UnityMotorSportsGarage starts in 2nd gear feel like 1st. I can leave it in 3rd around town. Like an auto with clutch lol