Quote:
the only way to tell an original 6pk shortblock is to find an unmolested block , it MUST have these 2 items , first is pistons with 4 valve reliefs , second is a cam that takes a 3 bolt timing gear , it MUST HAVE BOTH
third way to tell is is you can match the #s stamped on the block to a KNOWN SIX PACK CAR VIN
My original 69 440-6 block is stamped HP not HP2 
69.5 A12 Bee, first purchased in 1976, car 169 on registry
69 Coronet R/T 440/4 spd
69 Coronet 500 Conv H code 383 4bbl/auto
37 Plymouth PU
Find your spot on earth and ride it.
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