Zguy91 Posted July 24, 2011 Share Posted July 24, 2011 Im wanting to use an F54 Flat Top block with the E88 head off of my 74 260Z. Ive been looking around to try and found out what compression ratio I would be looking at. I know the thickness of the head gasket makes a difference. I have seem somewhere around 10.4 to 1 but is that with the early E88? Too much conflicting information out there as far as E88 head goes. Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted July 24, 2011 Share Posted July 24, 2011 (edited) for the info on the heads: http://datsunzgarage.com/heads/index.htm to calculate comp ratio: http://www.atlanticz.ca/zclub/techtips/calcs/engine%20builder/index.html If you really want to know, bring it to a machine shop and have them check the CC size. You could have a stock head, or it could have been swapped/machined/modified years ago. Edited July 24, 2011 by BluDestiny Quote Link to comment Share on other sites More sharing options...
Zguy91 Posted July 25, 2011 Author Share Posted July 25, 2011 I was using the atlantic Z car engine calculator. i think i figured out that they are calling the late e88 260z head the "p50" for some reason since this head has a 47cc combustion chamber rather than the 42 cc of the early e88 Quote Link to comment Share on other sites More sharing options...
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