302 compression

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Dec 13, 2007 | 07:51 PM

smurph78

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302 compression

I've pulled a 302 out of a 77 2wd to put in a 4wd. The engine runs and doesn't smoke or use oil. the compression on #1 was 145 lbs, #2 #3 #4 were up around 150-155. #5 - #8 were all around 160. Will this cause problems in the future. Plans are to run it until it quits or until I find a winsor or save up to rebuild the 302.

Dec 13, 2007 | 08:03 PM

MattV

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From: Talking Rock

I wouldn't worry too much with that little bit of variance. Keep running it! Just my opinion.

Dec 13, 2007 | 08:12 PM

smurph78

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i hope it holds up. truck sat up 6 months. tuned it up then pulled it out. its sitting in the shop waiting on the 4wd to be done

Dec 14, 2007 | 05:41 AM

HemiEater

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run it......

Dec 18, 2007 | 11:54 AM

red89notch

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tehre is no set rule for how much compression a engine should have as each is its own.

the only rule of thumb with compression is it should be within 5% of each other.

and you are so run it

Dec 21, 2007 | 06:21 PM

smurph78

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i've also read that a manual trans starter and an auto trans starter were different

Dec 25, 2007 | 12:45 PM

Boba Fett

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They are.... depends on flywheel (for manuals) flexplate (for autos) teeth. For instance... a car small block starket will not work on a small block truck... I think the same is true for automatics....