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Old 07-10-2022, 04:37 PM
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Gach Gach is offline
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Default My old pump gas Combination
Back in 2007 I’ll post the dyno numbers then the flow sheet.
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Old 07-10-2022, 04:42 PM
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Here’s heads flow sheet.
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Old 07-10-2022, 05:37 PM
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Do you have the weather data from that pull?
Looks like a 7% correction factor!

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Old 07-10-2022, 05:45 PM
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Steve sorry I don’t.

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Old 07-10-2022, 06:19 PM
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Great Hp at 5200, and well all across 4500-6500. What octane pump gas?

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Old 07-10-2022, 06:35 PM
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93 octane.

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Old 07-10-2022, 07:49 PM
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Quote:
Originally Posted by Gach View Post
Back in 2007 I’ll post the dyno numbers then the flow sheet.
Lou,
This looks somewhat like a dyno sheet you and I PMed about maybe a year and a half ago. Glad to see you finally found a more accurate version.

Stan

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Old 07-10-2022, 07:55 PM
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What did the car run with that combo? If you don't mind sharing

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Old 07-10-2022, 07:57 PM
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Those dyno numbers were with this unported Victor intake as you can see, the intake was just port match to the heads.
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Old 07-10-2022, 08:01 PM
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I later change over to this fully port Victor intake, and it pick up close to 30 hp.
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Old 07-10-2022, 08:07 PM
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What did the car run with that combo? If you don't mind sharing
First pass off the trailer it went 9.80 @ 136 mph. With 1.418…60’

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Old 07-10-2022, 08:10 PM
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On rev limiter it kept saying Lou shift me..lol.

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Old 07-10-2022, 08:30 PM
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Best pass was 9.45 @ 140.76 with 1.31…..60’ that’s with new intake.

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Old 07-10-2022, 08:52 PM
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I posted this, to encourage guys that you can easily make 750-760 hp on pump gas with a Pontiac. with unported Victor intake. It’s not a big roller either, 264/276 @ .050 with 729 lift on a 112 lobe. Though closed exhaust. And for me perfectly street able. What street able is different for others

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Old 07-10-2022, 09:25 PM
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That pass was at Atco Pontiac race event, first picture is with Bob and Frank from Alpontiac John Langer, Scott Rex and Haffman standing in front of the car in staging Lane. Scott Rex was stage behind me ready to make his pass.
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Old 07-10-2022, 09:30 PM
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That’s John Langer standing behind me staging area me getting ready to make next and best pass. 2008
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Old 07-10-2022, 09:41 PM
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Tire again
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Old 07-10-2022, 09:47 PM
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This is a great thread. Thanks for posting it Gach.

Here is a link with more details on this build's performance.

Post 26 talks about the intake manifold change.

https://forums.maxperformanceinc.com....php?t=649157&

Good reading for sure!

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Old 07-10-2022, 10:45 PM
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Initially I was running 3” Dr Gas cross over with 3” mufflers

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Old 07-10-2022, 10:48 PM
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Then I changed over to 2”-4” merge collector with 4” exhaust and 4” bola mufflers.

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