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#1
05-02-2007, 09:19 PM
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400 ci motor
wondering what compression i could expect from a 71 motor with 7j2 heads. converting it #62 heads. currently heads are 96 cc and want to change to 72cc head size with 2.11/1.77 valves. also what horsepower could i expect from this engine? thanks for all help in advance!!!!!
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#2
05-03-2007, 09:41 AM
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you should post this in the Street section of the forum, but to answer your question. (This is off the top of my head). I would say you are around 8:1 now and the 62's (72-75cc)would put you around 10:1. A little high for pump gas, but there are ways to lower it a little bit.
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#3
05-03-2007, 02:45 PM
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i dont know my way around here but ill look for it. thank you for the response. and the compression right now is around 8.7'ish.
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