It sure was ALL Z06 have had same engine internals since day one, know that for a fact. Only Change was early had cast pistons later have forged.
Quote:
Originally Posted by james schaechter
I didn't think that was the earlier version, but I am not a Vette expert at all.
I would hope that the CNC heads bring the NHRA factor down like it did for the4.6 Fords! Knock about 50 hp off! LOL.
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