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01-16-2004, 03:21 PM
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#1 |
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Chevy Freak
Join Date: Sep 2002
Location: Meadville, Pa.
Posts: 2,804
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Compression ratio of 89 chevy
Anyone have a manual or know what the factory compression ratio is on an 89 K2500 350 (5.7l) chevy? I tried this on the newer message board a while back and got no response. I'm rebuilding my brother-in-laws truck motor and just wanted to see if anyone knew before I take all of the measurements to check it. Thanks. Brian
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69 GMC SWB, 350 70 Chevy LWB, 350 55 chevy gasser, 461 73 Camaro, 496 67 RS Camaro, 406 64 Chevelle, 588 71 Nova, 565 67 Camaro, 461 |
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01-16-2004, 03:52 PM
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#2 |
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Wiseass secured himself a BAN
Join Date: Nov 2000
Location: MOON!!!
Posts: 2,282
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I am thinking that it is 8.5:1. Some will probably correct me though.
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01-16-2004, 04:03 PM
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#3 |
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Chevy Freak
Join Date: Sep 2002
Location: Meadville, Pa.
Posts: 2,804
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comp ratio
I was thinking about the same, but was curious. I know the new vortec motors have more compression. It has dished pistons and I was wondering if I could get away with flat tops to get up around 9.5 and run a cam about the same size as the vortec motor, maybe even slightly bigger, without effecting any computer crap.
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69 GMC SWB, 350 70 Chevy LWB, 350 55 chevy gasser, 461 73 Camaro, 496 67 RS Camaro, 406 64 Chevelle, 588 71 Nova, 565 67 Camaro, 461 |
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