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whats my comp ratio??

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Old 05-09-2003, 01:35 PM
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whats my comp ratio??
Getting ready to order a custom prom but one of the questions is about compression ratio. My bottom end is completely stock but I installed a set of afr190 68cc heads with felt pro 1010 gaskets. Does anyone here know the formula to figure this out. Thanks for the help.

Dave
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Old 05-09-2003, 01:59 PM
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Car: 1987 Camaro Z-28
Engine: 6.3L Victor EFI
Transmission: Tremec TKO 600
Axle/Gears: Moser 9"/4.11 Trac-Lok
9.75 to 1
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Old 05-09-2003, 02:06 PM
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Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
You can calclate it yourself here

Compression ratio Calc
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Old 05-10-2003, 05:46 AM
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Car: 1991 FORMULA
Engine: ZZ4 + LT4 HT CAM 430HP
Transmission: 700-R4 COMING T56
Axle/Gears: 9" 4.56's (COMING)
ahhhhh
somthings not right...... you say 9.75:1 but he is going with a bigger head chamer........ hell factory is only 9.3:1 with 64cc chambers........ 8.75:1 i'll agree with, as a guesstimate....
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