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Old 05-16-2007, 08:16 PM
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454 Compression Test Results - Help


got a few things going on with the motor so I thought I'd run a quickie compression test on all 8 cylinders. Here's what I got

#1 180 psi

#3 180 psi

#5 180 psi

#7 180 psi

#2 175 psi

#4 175 psi

#6 175 psi

#8 170 psi

I think those numbers are ok. Do you agree or disagree? I noticed all the even # cylinders are a bit lower - is that ok or does it indicate a head that is not torqued down enough or a gasket that's not as tight as the other head.



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Old 05-16-2007, 08:51 PM
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More likely means a variation in the chamber volumes between the 2 head castings...? Looks fine to me for a street/mild strip engine...
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