[Steve C.]

When we first built the 526 engine (4.315 bore / 4.5 stroke) with the HP heads we did two intake manifolds for it. A Victor intake and a BOP intake. On the first dyno session we tested both intakes and found the BOP intake made about 8-10 more horsepower. The Victor intake made peak power at 7000 rpm and with the BOP intake peak power was at 7300/7400 rpm. With the little hp differance we use the Victor intake rather than at a higher rpm with the BOP intake. Now that said it is a nitrous only set up and we have only gone to the expense of setting up the fogger system for the Victor intake. If we were to do so for the BOP intake it might be a differant situation, but we have never done so.


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[slowbird]

Originally Posted by Steve C.

When we first built the 526 engine (4.315 bore / 4.5 stroke) with the HP heads we did two intake manifolds for it. A Victor intake and a BOP intake. On the first dyno session we tested both intakes and found the BOP intake made about 8-10 more horsepower. The Victor intake made peak power at 7000 rpm and with the BOP intake peak power was at 7300/7400 rpm. With the little hp differance we use the Victor intake rather than at a higher rpm with the BOP intake. Now that said it is a nitrous only set up and we have only gone to the expense of setting up the fogger system for the Victor intake. If we were to do so for the BOP intake it might be a differant situation, but we have never done so.


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We found 30+hp with our Victor at 8000 vs the BOP.

[J.C.you]

Originally Posted by slowbird

We found 30+hp with our Victor at 8000 vs the BOP.

Glad to see you are doing better....is that the BOP I bought from you? Your memory was foggy then on numbers. Your alltimers must be in remission. Seriously, how can you compare a BOP and victor on a smaller motor app.? Sounds like a miss match of parts? A BOP is clearly optimized for a bigger cube motor.

Sorry for the derail on the topic,...raining here too and catching up on as the Pontiac earth spins....

Hey, I did flow a early Kauffman cnc 400 cfm port on Meaux's sf 600. The port did right at 400 peak, which is pretty darn close to what Kauffman advertised.

[SLICK1]

Originally Posted by J.C.you

..

Hey, I did flow a early Kauffman cnc 400 cfm port on Meaux's sf 600. The port did right at 400 peak, which is pretty darn close to what Kauffman advertised.

If I may ask, at what lift did they reach this number?

[J.C.you]

Originally Posted by SLICK1

If I may ask, at what lift did they reach this number?

Meaux quit flowing at .950 lift on a 4.35 bore and they did mid 380s at the same lift on a 4.28 bore. These were some of the first batch of cnc heads they sold years ago.

They probably have improved their cnc program by now.

Are you wanting a class motor head or best bang for the buc job? Hand porting involves digging deeper in the pocketbook as a general rule.

[SLICK1]

Originally Posted by J.C.you

Meaux quit flowing at .950 lift on a 4.35 bore and they did mid 380s at the same lift on a 4.28 bore. These were some of the first batch of cnc heads they sold years ago.

They probably have improved their cnc program by now.

Are you wanting a class motor head or best bang for the buc job? Hand porting involves digging deeper in the pocketbook as a general rule.

Something beyond class racer specs!lol.

[slowbird]

Originally Posted by J.C.you

Glad to see you are doing better....is that the BOP I bought from you? Your memory was foggy then on numbers. Your alltimers must be in remission. Seriously, how can you compare a BOP and victor on a smaller motor app.? Sounds like a miss match of parts? A BOP is clearly optimized for a bigger cube motor.

Sorry for the derail on the topic,...raining here too and catching up on as the Pontiac earth spins....

Hey, I did flow a early Kauffman cnc 400 cfm port on Meaux's sf 600. The port did right at 400 peak, which is pretty darn close to what Kauffman advertised.

I don't carry the dyno sheets around with me. I told you the Victor did better.

[J.C.you]

Originally Posted by slowbird

I don't carry the dyno sheets around with me. I told you the Victor did better.

This transaction went on for some time. Loose your sheets? 30 hp would be a number I could remember....and evidently you did at this point. lol

[slowbird]

Originally Posted by J.C.you

This transaction went on for some time. Loose your sheets? 30 hp would be a number I could remember....and evidently you did at this point. lol

I travel for a living and can be gone for weeks at a time. If you really wanted to know the exact number you could have held off until I looked it up. If you feel I cheated you I'll buy it back for what I sold it to you for.
Here are the dyno sheets for you and anyone else that might be interested. The BOP is basically stock except for being port matched and 1" milled off of carb pad and opened up to work with my carb. The Victor has be HEAVILY ported by Dan Barton