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65 B body, catalog states there are two different ones. Measure center to center bolt mounting holes. Anyone know the difference?

Quote:

Originally Posted by BILL BOWMAN1 (Post 6489747)

65 B body, catalog states there are two different ones. Measure center to center bolt mounting holes. Anyone know the difference?

Hi Bill! I do apologize for the delay. Two different idler arms were used throughout the years and sadly I don't have an exact reason as to why. This is one of those things GM did and did not leave us with any explanation, as they did with many things. Ours measure 1 7/8" center to center. Please give us a call with any further questions.

Thank you!
Kyler @ Ames
(800)421-2637

Great, that’s what mine measures.