Pontiac pump gas 571 Stroker motor Built by Tony Bischoff at BES
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- Опубліковано 21 сер 2024
- Pontiac 571 Stroker motor Built by Tony Bischoff at BES motors. Pump gas motor put in a 1969 GTO. Pictures of the progress, along w/ a short clip of the dyno after it was done and being tested. Please subscribe!
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Been a Pontiac mechanic all my life. Owned some, worked on plenty. Still have a 70 GTO with Butler motor. Still love them all. Keep up the good work.
I love Pontiac motors. I lie and tell everyone it's a 326. When they don't believe me I tell them it's a bored out 389........lol......... Some people believe me. It's hard when they see the aluminum block and heads. Some even still believe me.
My Father and I built many a Pontiac motor together, Super D's, Ram Air VI's, you name it. Best damn time a father and son could have together. #Pontiac4Ever
What a nice engine sir. I used to own a '67 GTO with a factory 400 in it. Best of luck with the '69.
I'm not sure what's better, the commentary or the music. Badass motor though.
The dyno handled the commentary :)
WOW! Nice engine build. Funny though I understand calling it a Pontiac because of the majority dimensions, but the only actual Pontiac parts I saw on the motor was the Water Inlet, the Timing Cover and the Oil Filter Assembly. Still a THUMBS UP on the build a VERY nice motor. Thanks for sharing. Best Wishes and Blessings. Keith Noneya
It's Pontiac, just aftermarket Pontiac with Pontiac architecture :) Thanks to the aftermarket supply from those that are passionate about Pontiacs, we don't have to rely on 50 year old parts for an engine family that's been dead since 1981. Without the aftermarket support we'd have a lot less Pontiacs running around, and a build like this wouldn't even be possible anyway.
800hp is virtually the cap on a PMD cast engine, a bit more with a SD block. Rather than be restricted on a HP and investing heavy into a block that cannot match a dollar to dollar BBC or LS, why not go aftermarket? If I use aftermarket rods and piston in a PMD cast engine, is that still cheating?
@@soldierski1669 What? Pontiac blocks go toe to toe with a BBC. A 455 SD block is superior.
WoW this is SWEET
I had a machine shop check bore thickness from a junkyard 389. I bought a stroker kit for 30 over bore with a 4.25 stroke from butler. Alum heads from them also. I'm real happy with the pontiac. I have all my pics from the assembly in my basement. It's been 0n the test dyno in Rowley mass. ⁵525 HP at average 537 ft lbs with a holley 650 spread bore dbl pumper with a torker 1. It's plenty for the street. V tree very
Very Cool
Highly Exceptional work!
Extremely Professional!
Very nice clear pictures.
This is my new favorite pontiac engine!
Wonderful
Be sort of fun to put a tri-power setup on this beast and put it in an old GTO and call it a 389.
Beautiful, sounds great!!
I swapped out the 326 in my 66 Tempest in favor of a 482 that doesn't have 1 stock part in it. Including block.
Somebody's gotta build a wild street engine one day based off a DRCE racing block
Nice motor.. I love pontiacs. Just built me a 447 ci 3(
389 for my 67 bird
That's a pretty interesting size. How did you come up with that?
Really?
Wow awesome I couldn't quite read the sheet did it say 700 hp? Very good video love my 1968 fierbird 400 and all the killer Pontiacs !!
Yes it made 724hp and 764tq on it's best pull.
great clip. i love the series of still fotos. interesting build good power numbers considering the low 5800 peak RPM. was that by design i.e. cam design?
Thanks. Some of that is cam design, some of it is the somewhat small cylinder head port size given the size of the engine. It could have used a much larger cylinder head but at the time that's what we had from another engine.
@@firebirdjone thanks for the prompt reply. do you know of anyone that could port some iron Pontiac heads for me? thank you
@@johnbecay6887 Unfortunately the few I've known to port iron heads of any kind has gotten away from that and only do aluminum these days.
@@firebirdjone porting iron heads is becoming a lost art. thanks for the reply
Beautiful and badass. Some high flow heads would be nice with all that C. I.. Wicked.
I own an ole 1972 455H.O, still running 7f6 heads. Love me some Pontiacs. My dream is to buy a DCI Ram Air V.
Nice looking build !!! What brand of valve covers are those ? I like them
The valve covers in this video were just a pair of old stamped steel Moroso covers that we had, shot some black on them and were just used to run the engine on the dyno.
The engine as installed in the car got a pair of a aluminum covers that Tony engraved on his CNC machine.
@@firebirdjone ,Okay Thank You ,I’m looking for some plain tall valve covers for my Hotrod
Anyone else had a motor built by Tony Bischoff? Who did you use?
That's an awesome torque #. Well done. Do you tune on the dyno using AFR (1 sensor) or Lambada (multi-sensor)?
Thanks. Don't really know what the torque peak was on the engine as it was already dropping where Tony was starting the pulls. Final tuning had torque at 764 ft lbs. but was already falling at that point. It may very well be slightly higher than that below 4,000.
Tony can tune them either way, but I believe Tony had 1 sensor keeping tabs on AFR on this engine. One reason was because the engine was run on the dyno with the chassis headers used on the car, so no provisions for separate 02's or separate EGT sensors. The chassis headers also gave a more realistic dyno number compared to "dyno headers" that will typically add 40+ HP on an engine like this.
Hope that helps.
The Edelbrocks were used for several reasons. Main reason was because we already had them in use on a previous 455. They had already been CNC ported as well. However Tony took them and worked them over further to flow nearly 360 cfm. The Victor Intake was also something we already had. Tony worked some magic inside the intake to actually kill some of the bottom end torque knowing this was a small tire street car. In the end it made the numbers we were looking for. Certainly some high ports or Tiger heads would have made phenomenal power, but very satisfied with the results here.
Personally I prefer AFR heads and use them on other engines here. Unfortunately they don't make anything for a Pontiac.
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Thanks for the reply. I have a passion for building older engines. Since the newer intakes made now, are a bit too big for our purposes as they kill velocity, I have used Moroso A/B putty to fill in an intake and re-machine to better specs. I like Brodix heads, oval series. Fun Fun Fun!
Brodix makes an excellent cylinder head. I use a pair of AFR 305's on a BBC here that work very well. Planning a larger engine in the near future to swap them over to. I'll dyno that one and see how it compares.
firebirdjone Don Johnston in Akron Ohio makes some nice, aluminum RamAir V round-port Pontiac heads that flow as much as 550 cfm. He designed the Tiger heads too. His shop also builds whole engines. If I only had a spare $50K...lol.
What compression ratio is it running. What was the rpm on the power peak?
It’s listed in the tiny captions. 10.8:1
Lots of street cars leave every light at 4500 rpm. This only cost, what? $12,000 like my 455 King Street engines. 620 ft lbs at 3000 rpm. ?
Actually we never found where true peak torque occurred. Tony pulled it as low as 4,000 where it made 764 ft lbs, and even from that point the torque curve was still dropping as rpm rose. My guess is that torque peak is within 100-200 rpm of that number. The neat thing about this engine is that it never dropped below 700 ft lbs for the entire pull, so it's a ball to drive, and with the 3500 converter in it that actually flashes a bit higher than that if you really get after it, really makes the car a handful. With peak power at 5700 there is no need to spin it tight either. What's funny is that Tony spent some time inside the intake manifold in his words, to kill some bottom end torque, knowing this was a small 275 tire street car and it still made ridiculous torque numbers.
Couldn't see the hp n ui mbers
The best pull was 724hp and 764 ft lbs.
@@firebirdjone What was the cost on that beast, I'm almost afraid to ask. Lol
@@Michael-qy1jz I don't recall the total cost but it wasn't horrible considering. The block alone was around $3,000. The rest of the parts are about what you would guess for any performance build, and Tony's labor for machine work is on par with most good machine shops. Typically these days a not too outrageous performance build on a typical size classic engine, if I supply the block and crank, can easily reach $6-$8000 by the time I'm done with it, in parts and machine work cost.
@@firebirdjone Love those Formula's from the other vids! I have a 74 Formula 400 in Denver Gold..
@@Michael-qy1jz
Thanks Herb. The gold one is mine, the blue one I built for someone.
No sound ??? L
Dyno at the end. For more check out my other videos, there are idle clips and dragstrip passes. Thanks
No good without sound
If you want to hear it run check out my other videos. I have several, some on the dyno, some in the car running, some at the dragstrip.