Pontiac 535 engine makes BIG POWER on the dyno
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- Опубликовано: 19 фев 2023
- This is a 535 cid Pontiac engine we built for Greg Reiser and his '68 GTO. The engine is based off a MR-1A aluminum aftermarket Pontiac block. A Scat 4.5" crank and GRP aluminum rod combo was used on the bottom end along with a set of Ross 4.350 forged pistons. A Tin Indian Performance custom ground Comp Cams solid roller was also used with Crower solid roller lifters. The engine is topped off with 365 cfm KRE High Port heads and Victor intake. We also used a 1" HVH spacer with the custom configured 1200 cfm Pro System Dominator carb. The combo pulled a solid 15" of vac at though the pull with our Evac System that used a Moroso 3 vane pump! This ROWDY combo made 859.6 horsepower at @ 6600 rpm and 771.4 ft lbs of torque @ 5200 rpm. Should be a fun ride in Greg's '68 GTO!
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Nice! We just dynoed my 535 engine a few days ago and can hardly wait to get it back into my 69 GTO. 924 hp...
Very cool! Long live Pontiac Powa!
I lost my last Pontiac years ago. [sad eyes]
It was a flawless 69 Cataline Wagon.
Paint, interior, glass and metal were all A1 but the motor was the problem, and while I was working to put a new motor in it, things happened, and I ended up never seeing the car again.
What a great engine! Would love to have something like that but would be too much for the way my car is built.
Very nice indeed. 1.6 HP per inch.
Very nice. Great job
Sounds like a Nascar engine!!
Would love to see a E85 version 😍
I'd like to see what the rest of the car has to handle that powerhouse 😧 surely not stock. If my 400 got half of that I would be happy
That insane hp for a N/A engine
Tin - could you do a comparison dyno test of race ported 280cfm 6x heads vs 290-300cfm Kauffman D-ports with a larger cam to see how close the iron heads can come to the hp and torque of the Kauffman heads? thanks
Not sure that we would do that as we already kind of know... (280 cfm is pretty stout flow for a cast iron head!) 240 + cfm 6x with a RAIV style cam 460 ish cubes makes about 450 ish hp - stock intake - Q jet. Same cid with a 85 cc 290 port - same cam - Performer RPM- HP4150 style 950 carb- makes 530 ish HP. We have used cast iron for years... we can make more power with the KRE heads hands down.
@@TinIndianPerformance I know the Kauffman heads are a lot better, just want to see how close fully ported iron heads would be. I'm into getting the max performance from stock looking engine.
@@tomsettles6873 We get it but that sounds like a great test for YOU to do! The cost of porting cast iron and the fact that they would be paper thin at 280 cfm - we have NO interest! Running on pump gas you will be limited by the 9.5 to 1 compression....Sounds like a great test.... Let us know ;-)
no way to safely port 6x's to 280. McCarthy's book gives a step by step procedure to get 250 which is 500hp. That's it for cast irons - waste of time porting them as it takes forever when you can buy Kauffman or Edelbrocks that beat ported cast iron out of the box@@tomsettles6873
Mmmmmmmn oh yes
Can't wait to hear it run! On the Comp cam your using, is that a 4/7 swap where the plug wires are shaped?
Yes 4/7 swap
@@TinIndianPerformance Wow that was a good pull. You know I just dont understand the 4/7 swap . I also have a 535 butler motor that I am building is there any tips you can share when building a motor like this.. I also have the aluminum block
@@rogersampayan9192 4/7 swap
Once there is sufficient overlap in the cam, what happens is you end up with a lot of turbulence in the intake. The four seven swap, takes advantage of the turbulence. Reduces it, and the same time allows the intake charge that has been built up from number two, to be fully used, and efficiently drawn back into number 6
Here’s a pretty good way to think of it based on the facts of it being an 8 cylinder and a 4 strokes per cycle engine.
the crankshaft revolves twice in the cycle.
two revolutions equals 2x360 degrees or 720 degrees.
no two spark plugs fire at the same time; they fire in the firing order.
the 720 degrees is thus divided by 8 and thus every 90 degrees of crankshaft revolution another spark plug fires which is very close to the end of the compression stroke.
if # 1 piston is at the very end of the compression stroke where the spark plug is about to fire, #8 piston will be half way up its cylinder on its compression stroke with another 90 degrees of crankshaft rotation to go before it’s spark plug fires.
the next one, #4 will be near bottom dead center at the end of its intake stroke and commencing its compression stroke.
continue with this sequence and we can see that #6 piston is in the same position as #1 but finishing the exhaust stroke.
#5 will also be on the exhaust stroke but 90 degrees behind # 6.
Incidentally, you can time the engine off of the plug that is the next one beyond the halfway point which in this case is #6 because the vibration damper where the marks are is in the same exact position whether it is #1 or # 6. If timing is 6 degrees before top dead center both pistons #1 and #6 will be in that same position. Put your timing light on #6 and you will see flashing of the timing marks indicating the same 6 degrees before TDC.
Very Nice 👍👍
Never seen any engine jump on a dyno like that as power is reduced.
How much
Yup , that should toss your head out the back window !
"So we were just showing off our $50,000 no actual Pontiac parts Pontiac engine".
Your ignorance proceeds you! LOL - First off, this engine IS NOT 50k - second - Yes those are Pontiac parts! They are not "stock" Pontiac parts but those heads will bolt onto a stock Pontiac block AND stock Pontiac heads will also bolt on to that aftermarket aluminum MR-1A block!
Question. With a MR1-A Block what is the largest recommendation 4 bore size either N/A or Supercharged .
❤ur Billet Heads
Robert 🇦🇺 Australia 🇦🇺
Aluminum MR-1A 4.350 bore for NA - Superchanged it depends on the amount of boost
Far out. Wish my EV sounded that good!
You guys have a EFI set up
Not on this combo - just showing what we did
@Tin Indian Performance I come from european and japanese car circle I appreciate your content for keeping the pontiac love alive.My dream build is 3 gen pontiac f body gta with! the real pontiac engine EFI 6 speed Independent rear Suspension.
We do EFI builds - just not this one
How much does one of those cost ?
Hey Tom. If you would like a quote, shoot us an email at Sales_Team@tinindianperformance.com
Naturally aspirated?
YES! - No power adder
Stroker motor?? 455??
Well not really.... it is an aftermarket MR-1A aluminum block - 4.250 bore with a 4.5" stroke - this is a 3" main engine...
@@TinIndianPerformance o ok..
compression ?
4.350 bore - 4.5" stroke with 56 cc heads - a little over 15 to 1
@@TinIndianPerformance thank you
@@MrPONCHO467 Whoa! 15-1? Almost a diesel. I like it. :)
Love Pontiac power Buick and Oldsmobile to just cost so much damn money lol compared to everything else besides Mopar if course 😅
Torque and HP sounds too high. -probably like a happy dyno.
Nope - if ANYTHING, the dyno used is typically pretty conservative!
don't even respond to morons making uneducated statements like that@@TinIndianPerformance