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Message: <blockquote data-quote="LAFENATU" data-source="post: 298406" data-attributes="member: 10097">347 without a doubt...10:1 final compression with the heads...Like Kevin said, you'll love it.CHP makes a nice 347 kit. Uses a 5.315 long rod, a 3.400 stroke and a nice forged piston. Not too expensive eitherAFR 185 heads, Ed Curtis/Jay Allen Custom Cam and a Holley SM2 intake...It's a proven power maker.You'll hear a 331 is better cause it has a taller piston and better rod ratio. The 347 doesn't last as long as a 331 blah blah blah.Rod ratio = eight rods per crankshaft... Rod ratio is nothing but BS and internet neophites trying to sound important. Same with rod angularity, piston compression heights and any other BS some idiot wants to say. Ask how many engines these people actually built. It'll bring out the truth. :coolsmiley:</blockquote>