[ponjohn]

Originally Posted by Stan Weiss

Just playing around with an old desktop dyno program. 623 HP @ 7000 but it is with 13:1 CR.

Stan

Stan why did you sim 785 lift when the head profile stops at 600?

[Stan Weiss]

Originally Posted by ponjohn

Stan why did you sim 785 lift when the head profile stops at 600?

Where did my cam numbers come from? While I have not had any time lately to work on it I do have a Beta version of David Vizard's TMC for Pontiacs and while it comes up with more HP it also wanted more head flow. So I used those numbers. When I reduce the lift DeskTop Dyno reduce its HP. If all I do is reduce both valve lifts by 0.1" here is the results.

Stan

[ponjohn]

Originally Posted by Stan Weiss

Where did my cam numbers come from? While I have not had any time lately to work on it I do have a Beta version of David Vizard's TMC for Pontiacs and while it comes up with more HP it also wanted more head flow. So I used those numbers. When I reduce the lift DeskTop Dyno reduce its HP. If all I do is reduce both valve lifts by 0.1" here is the results.

Stan

See attached.

[Stan Weiss]

Originally Posted by ponjohn

See attached.

I am not sure what you are trying to tell.

With 0.785" Intake lift and 0.753" Exhaust lift simulation shows 623 HP @ 7000 RPM

Only change made was to reduce both valve lifts 0.100"
With 0.685" Intake lift and 0.653" Exhaust lift simulation shows 591 HP @ 7000 RPM with 592 HP @ 6500 RPM

Stan

[jfud]

I have A set of 614's that I think you may be interested in . They are mildly ported by Diamond Elkins a stock manifold will work .Complete with valves, springs and retainers.
If you are interested please feel free to text me at 646 408 3494. I'll send photos.

jfud