Factory compression should be about 9.5.1 butwith flat tops and milled heads I would expect it to be over 10.1
2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s 2004 Buell XB12s Originally Posted by LamboDoNoMo "Never give up, NEVER BACK DOWN!!!"
Originally Posted by WARLOCK Factory compression should be about 9.5.1 butwith flat tops and milled heads I would expect it to be over 10.1 i wonder what compression i be at...hmm i guess we'll see! i know ill have to upgrade pushrods the heads will be finished tonight
2008 GMC CCSB 6.2/6L80e swap Gen IV 5.3/60e swap 1994 ecsb W/T
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