What is the ideal CR for a street/strip roots blown Hemi.I thought I had 8.5 to 1.Now that the engine is out and we are measuring what was there it is coming up at 7.4 to 1.The piston is 100 thou in the hole.This is NOT was I expected to find.The camshaft was ADVANCED 6* also.And the rings were Moly. Not too happy with my findings BUT,,,,,I got 5 years and well over 10k miles before the ring failure.
The iron heads I had on there are 170 cc,,the aluminum ones I want to use are 183 cc and un shrouded. So the new pistons will make up for the shortcomings of the last build.Now,,,make it a true8.5:1 or higher???
Wonder what I was lacking with that cam 6* advanced,,,,,,,,,

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HEMI-ITIS has no cure.
My condition is fully BLOWN!!