identify small block chevy cylinder heads 0303-0409-0504

Discussion in 'VIN, Trim Tag & Drivetrain Decoding' started by 67camaro400sbc, Jan 16, 2021.

  1. 67camaro400sbc

    67camaro400sbc New Member

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    i tried promaxx and they said it wasnt theirs,their heads just has a 4 digit numbers on the front of the head
     

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