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Thread: How to Properly Read a Compression Test Gauge?
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Old 08-22-2012, 04:54 AM
454C10 454C10 is offline
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The numbers should all be about the same.

Stock BBC's are typically low compression so don't expect high numbers. 125 psi is about it.

flat cam lobes and worn out bearings will be the biggest issue, and that will be hard to see at a salvage yard.
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