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View Full Version : Compression ratio ?


mopar
01-22-2007, 08:35:07 PM
Need someone to confirm my static compression ratio for me. I'm thinking close to 10:1. I've included other specs if someone wants to take a shot at the Hp and torque numbers also.

BLOCK SPECS.
4.030" bore
3.48" stroke
speed pro H631cp30 piston (two valve reliefs)
.012" deck height (block decked)
64cc heads (pro comp 3001 angle plug)
.039 gasket compressed thickness

CAM SPECS
Chevy LT4 Hot Camshaft (P/N 24502586 Specifications

Lobe Lift
Intake Exhaust
0.328” 0.328”
Valve Lift
@ 1.6 ratio 0.525” 0.525”
Duration

@0.050 cam lift 218° 228°

Lobe Centerline 109°

Lobe Separation 112°



Holley 650 cfm on a Weiand dual plane with Headman 1 5/8" shorty headers.

KylePBZ
01-22-2007, 11:07:39 PM
Try these.
http://www.angelfire.com/fl/procrastination/motor.html

http://kb-silvolite.com/calc.php?action=comp

Rick WI
01-22-2007, 11:41:36 PM
You are correct, it calcs out right about 10:1.