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400 compression ratio?

   
Old Dec 12, 2002 | 07:15 AM
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black83z
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From: Morristown, NJ
400 compression ratio?
What is the compression ratio of a 400 with stock bore and 882 heads? Thank you
Matt
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Old Dec 12, 2002 | 07:47 AM
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That would depend on the pistons.

A 76cc chamber head, .038 thick gasket, uncut deck and 12cc dish pistons will give you a CR of 9.0:1.

Using a typical flat top 4 relief piston will increase the CR to 9.5:1

Lonnie
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Old Dec 12, 2002 | 07:03 PM
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88 350 tpi formula
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Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
all stock? most are 8.5:1
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Old Dec 12, 2002 | 07:07 PM
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From: Morristown, NJ
Thankee all, its much appreciated.
Matt
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