I have a set of power steering & alternator accessory brackets for an AC car, that came with the '76 350 motor that I bought for my convertible project. I have two slightly different brackets for the power steering pump and can't figure out which one is correct. The top one in my pic is 1-1/2" longer at the adjustment slot than the bottom one. I've researched the differences in the assembly manuals, but I only have '68 - '72 so I can't check '76. I know there was a bracket change in '72 and from the ASM the '71 and earlier bracket looks longer in the drawings. The longer one looks very similar to the bracket on my '72 convertible, which contradicts my theory that pre '72 were longer. Any help from the collective would be welcome. Thanks!

Rodney

 

The smaller one may be for the older externally regulated alternators. The 10Si and 12Si have slightly larger dimensions than the 60’s ones.

madelectrical site I think has the dimensions so you can chase down which goes with which.

 

These are PS pump brackets, not alternator brackets.