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Originally Posted by Clarkson Daryl,there not really the same motors are they??,the 2 differant cams and intake manifold can easlly make 24hp extra on a 383 motor??
PS cheers for the leads mate!:thumb:
Here are my figs for a 350chevy with 195cc heads. |
Over 50% increase in vapour pressure with denser charge is also an issue which throws it out the window.
Looking at your figures the pro comp will outperform the AFR in a street race and in a drag race I am not sure the hotter engine would make up the torque and HP difference. Certainly the characteristics are better suited to the track with high RPM's as the milder engine has it in virtually all areas by the looks of it.
Unfortunately there is only one way to compare and that is by changing heads on the same engine and running when the air pressure is virtually identicle as you can easily get 10 BHP in that. By the way I think much of the torque difference could be ironed out using 190 runners, it will give a better signal on a 383 at the lower rev range and theres always a benefit in higher gas flow speeds.
Interesting reading though.
All the best
Mike