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Compression Ratio - What cc heads

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Old Mar 17, 2011 | 03:02 AM
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Default Compression Ratio - What cc heads

I'm thinking about putting a motor together for my corvette. A 402 with -15cc pistons. Never done a boosted setup before so what would be a good compression ratio to shoot for so that I can know more or less what CC heads I need to go with. I'm only looking for 7-800hp on kill mode and relative lower for just cruising around. Also it will probably be ran n/a for about a year to break in the motor and beef up the rest of the drivetrain before a kit goes on, so I don't want it to be too weak of a motor before it gets boosted. Let me know your opinions and what you can get away with without hurting the motor later down the road. Thanks
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Old Mar 17, 2011 | 03:40 AM
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You could run 11:1 compression without hurting a motor, as long as you can provide a high enough octane to prevent detonation. Are you looking to run pump gas at all?
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Old Mar 17, 2011 | 04:49 AM
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Oh, I guess I forgot to mention that this would be on pump gas.
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