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05-16-2005, 07:33 PM
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#1 |
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Registered User
Join Date: Jan 2005
Location: Santa Barbara, CA
Posts: 69
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compression
My supposedly stock '94 350 has 180 psi in 7 cylinders, and 185 on 1. Per Chilton, compression ratio is 9.1.
This seams high; engine carboned up? The procedure I followed was to remove all plugs, then crank engine over 3 compression strokes, recording all three (generally 130psi, 150psi, then 180psi). Any oppinions as to wether these numbers are normal for an engine with 50,000 miles? Thanks, Roger. |
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05-16-2005, 07:42 PM
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#2 |
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Registered User
Join Date: Jul 2004
Location: Northern Nevada
Posts: 156
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with the tiny cams in these engines (just like my '95 Yukon) those numbers are probably in the ballpark of stock. I hate to admit I've never shecked mine in 6 years.....
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