Hello MembersAfter much time and searching I finally can CONCLUDE the 'domed piston' questions involving the 'higher compression' pistons supposedly in the 290Hp engines. I HAVE A TRUE ORIG FP31 MOPAR PISTON,,,along side a regular 318 9/1 compression piston of about 1960 vintage. ALL POLY 318s were 9/1 compression except for of course the 290HP engine (supposedly) I am able to use a common wrist pin to locate both pistons at the same point that they would be on the same connecting rod. GUESS WHAT--The FURY piston is higher by .010 to .015 (depending on how and where you measure it.) SURE DOESNT SOUND LIKE MUCH DOES IT??ANYWAY---A little math based on 9/1 compression for the stock piston and using a .012 average higher FURY piston YIELDS------------------- 9.23/1 for the FURY PISTON!!! So the FURY piston WAS A SPECIAL PISTON,,,yielding approx 9.25/1 ED ECKERSON LI NY ************************************************************* To unsubscribe or set your subscription options, please go to http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1
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