Posted July 16, 201014 yr comment_325623 I am rebuilding a stock E31 head, and I'm trying to determine how much to shave the head to get around 9.5-1 compression ratio. Also interested in knowing if 280Z intake valves will work with 260Z block, I know the exhaust valves will work. Thanks anyone Link to comment https://www.classiczcars.com/forums/topic/36514-shaved-e31-head-95-1-cr/ Share on other sites More sharing options...
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