Alternator Mounting Bolts

[Sheldon S.]

Can someone tell me some info on the bolts for both the alternator brackets and the power steering brackets. The car is a 71 454, auto with PS. I am looking for the finish of the bolts and the headmarkings. The ones I know are the alternator adjusting bolt (WB) and the two that hold the PS bracket on (TR). There is the long bolt that the alternator pivots on, one that is about 1 1/4 long that holds two brackets to the block and another one about 2 1/2" long that attaches another alt. Brkt to the block. Any info would be a help.
Thanks
Sheldon

[Rich P.]

Re: Alternator Mounting Bolts

Sheldon,

The long alternator pivot bolt is 4-1/2" long usually Cad and headmarkings could be TR, RSC, A, F in a circle, A in a circle, M, UR, WB, SB, SBC, C, L5 and several others. I have seen many different markings for this bolt. Plating on the other bolts usually is cad also although I have seen some black. Headmarkings for those are same as the long pivot bolt.

Rich

I forgot to add that they would all be grade 5 3/8-16 (except for the 2 craddle to block bracket bolts which are 7/16-14) And the 4-1/2" long pivot bolt will interfere with the valve cover if you use a longer bolt so make sure it's 4-1/2"