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Discussion Starter #1
hey guys. I was just wondering if anyone had a desktop dyno, or was willing to take a guess at what this motor would make hp/tq wise. It is an internally balanced 383 with 6" rods. It is a full roller motor with comp cams 12-433-8 cam. Part Number 12-433-8
Engine 1955-1998 Chevrolet
262ci-400ci
8cyl.
Grind Number CS XR288HR-10
Description

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Intake Exhaust
Valve Adjustment 0 0
Gross Valve Lift 0.52 0.54
Duration At 0.006 Tappet Lift 288 294

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Valve Timing At 0.006
Open Close
Intake 38 70
Exhaust 81 33

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These Specs Are For The Cam Installed At 106 Intake CL
Intake Exhaust
Duration At 0.05 236 242
Lobe Lift 0.347 0.36
Lobe Separation 110
It has an edelbrock air gap intake with a holley 750 double pumper on top. The compression ratio should be about 9:8:1. Thanks!
 

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Discussion Starter #2
AFR heads

Sorry guys. I forgot to mention I was running AFR's new 195cc street eliminator heads with 65cc combustion chambers.
 

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486HP @ 6000RPM and 466TQ @ 4500RPM. This is with larger tube headers and open exhaust. prolly close to what you would get on an engine dyno :thumbsup:

Your compression is a tad low for that cam, bump it to 11:1 and you make 530HP, you have to match components to get max power, have you calculated your dynamic compression ratio ?
 
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