the cnc ported head had a different chamber than the cnced standard offering 72cc? someone must have confirmed this in 12 months they have been available?
is 78 any better than 72? still cant use it on a 455 wo race gas or e85 i wouldn't think
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1969 carousel red firebird 455, richmond 5 speed
1964 540 gto
1971 lemans sport convertible
1972 Maverick under slow construction
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