Description:== This is the cast iron pulley for harmonic balancer Big block 427, part number 3863108BM,
This for a GM Deep Double Groove Crank Pulley for Big Block Chevy Applications! It has a 6 3/4 inch Outside Diameter with 2 1/2 inch wide Deep Belt Grooves. This will work with all BBC's that have a short water pump but came from the factory on Impala's, Corvette's, Nova's, Camaro's, Chevelle SS, El Camino SS, etc with Special High Performance Engines.
- 68-69 Corvette with 427 engine in 390, 400, 425, and 435 H.P. versions
- 70-72 Corvette with 454 engine except LS6
- 68 Impala with Special High Performance 427
- 68 Chevelle, Camaro, Nova with L78 & L79 398 375 H.P. Engines
- Also correct for 68 COPO and Yenko models with the L72 427 425 H.P. Engines
- Original New GM Deep Double Groove Crank Pulley. This was used on Hi Performance 396 and 427 Big Blocks with a Short Water pump. This is Correct for all 65 66 67 Corvette and all 1965 396 425 and 1966 427 425 Biscayne Belair Impala Caprice And 1967 Camaro and Chevelle with Special Hi Performance 396 375 and 427 Engines