Engine: 390, 428 S/CJ
Finish: Zinc bolt and zinc dichromate toothed lock washer
Bolt Thread Size: 1/2-13
Quantity: 1 bolt, 1 lock washer
This is the correct bolt and locking toothed lock washer for all big block FE engines. Finish specifications are verified in assembly manuals.
Concours Notes: The lock washer should be sandwiched between the engine block and ground cable terminal (see assembly manuals).