[GFS] 290HP FURY ENGINE AND "DOMED PISTONS'
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[GFS] 290HP FURY ENGINE AND "DOMED PISTONS'



Hello Members

After 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



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