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05-28-2008, 05:25 PM
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#1 |
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Junior Member
Join Date: Jul 2007
Location: Odenton, Md
Posts: 552
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402 engine compression???
Does anyone know what the engine compression test results should show for a 396/402 motor??? I need the proper range it needs to be in?? PLEASE
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going to sell this one...looking for a SWB project next. |
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05-28-2008, 07:21 PM
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#2 |
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Senior Member
Join Date: Aug 2003
Location: Lubbock, Texas
Posts: 2,443
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Re: 402 engine compression???
what year is the engine? There is alot of difference between a 68 and a 72.
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72 Cheyenne Super 80 Silverado Blazer 2wd |
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05-28-2008, 07:30 PM
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#3 |
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Junior Member
Join Date: Jul 2007
Location: Odenton, Md
Posts: 552
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Re: 402 engine compression???
1970 402 big block. I needs compression specs taken from the spark plug hole....not ratio compression..thanks
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going to sell this one...looking for a SWB project next. |
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05-28-2008, 07:45 PM
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#4 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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Re: 402 engine compression???
Lowest cylinder should be within 15% of the highist. Spark plug compression depends on what kind of cam you have and the wear on the engine.
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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