Alternator bracket bolt markings on 70 sb

[Steve D.]

What are the correct bolt headmarks for the upper and lower brackets?

[Terry M.]

Re: Alternator bracket bolt markings on 70 sb

What are the correct bolt headmarks for the upper and lower brackets?

Upper is usually WB, but sometimes SBC, always grade 5 (three lines) with a dark (some would say black) split lockwasher and a thicker and larger diameter than normal washer. Hex head faces the rear of the car.

Someone else can shoot at the bottom.