1991 Chevy Corvette Compression Test

1991 CHEVROLET CORVETTE
80,000 MILES • V8 • 2WD • AUTOMATIC
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BRIAN4081
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I am looking at purchasing a Vette with a 454ci and I would like to know how to perform the compression test, but more importantly what are the readings that are considered an acceptable range?
Apr 24, 2008 at 9:58 PM
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MHPAUTOS
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Hi there,
you will need to do a comp test hot, and check each cylinder with a strong battery and make sure the throttle is fully open. As for the readings you will want to be getting mid 150's PSI with a max tolerance of about 10% high to low readings, If all the readings are a bit lower and even that will be ok as well.

Mark (mhpautos)
Apr 24, 2008 at 11:33 PM