NOS Pair GM # 3919839 Big Block Rectangle Port Chevy Heads Casting# 3964291

    $2,500.00

    NOS Pair GM # 3919839 Big Block Rectangle Port Chevy Heads Casting# 3964291 “291” in the original GM boxes and the NOS Components to build these head.(See list with GM part numbers in 2nd picture. These heads are the high performance versions with rectangular intake ports and closed combustion chambers. Casting dates for these heads are C1672 for March 16, 1972 and J2973 for Oct 29, 1973. These heads are NOS GM castings that have never been used or installed. Finding a virgin set of heads and there components are nearly impossible to find. These are just as they came from GM with no breaks, modifications, or repairs.

    $2,500.00

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