1968 -74 Corvette Chevy Camaro Chevelle Crank Dual Pulley BBC 3921923 GM Factory original Chevrolet #3921923 BM 2 deep Groove crankshaft pulley special high performance 68 through 74 Corvette big block 427, 66 to 68 Chevelle ,Beaumont, El Camino, 68 Nova, Impala 67 68 Camaro 396, Chevy truck and GMC 69 to 72 this BBC pulley is damaged has Cracks around the mounting bolt holes you may be able to use it with oversized washers or good for display engine $20 shipping is available upon request Interac e-transfer or PayPal