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Comp ratio??

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Old 10-21-2006, 09:13 PM
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Default Comp ratio??

I have a 383 that was built by a now famous company that has closed.
I was told it was 11.3:1 but I don't think that is correct.
4inch stroke, 6.125 rod, diamond -7cc relief 3.905, 6.0 mls gaskets, 62cc heads.
not sure if it was decked or anything.
cam is a 246 248 .613 .615 lsa/icl114
duration at .06 is 295 297
valve timing int 9 btdc 57 abdc
exh 58 bbdc 10 atdc

can someone help with my static and dynamic comp ratio's
Old 10-21-2006, 09:54 PM
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i figured 11.08:1 but i am guessing on deck height?
Old 10-21-2006, 10:35 PM
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yeah I have no clue on the deck. the psiton is usually about .010(-.010) out isn't it




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