C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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compression ratio

Old Jun 3, 2005 | 02:25 PM
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From: Jennings LA
Default compression ratio

what would the compression ratio be on a stock 81 with camel hump heads installed. planning on doing this and wanted to know what the ratio will be? also how much hp will I gain. also adding headers, true duals and performer intake.
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Old Jun 3, 2005 | 02:58 PM
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Have the heads been milled at all? You need to know the cc's of combustion chamber. Have the heads had any extra work done on them? The headers, exh and intake will give you more performance maybe 15% more hp, depends on the heads.
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