This is a original gm with original gm part # stamped in pulley This is a lower crank shaft pulley 2 grove for big block 396 and 427 engines except special high performance gm part # 3874414 BQ and fits models like camaro chevelle malibu nova impala and others this is a 2 grove pulley shows signs of being bolted on so is used
listed as fitting
- 1964 1965 1966 1967 1968 chevrolet many models
