I doubt it is the rim...I have owned the car since 1992, and I take very good care of them.
It has not seen any winter driving, so no rust on the driveshaft.
Rear tires are new, but there is always the possibility one is not balanced correctly.
I am planning to up the power with a bigger cam than the 60919. I have a CC 290B-6 solid cam on the shelf, just not sure how compatible it will be without more gear.
Also have an old Isky 280 Mega HL cam, but not sure if that is the best choice compared to the more modern grinds.
That's a good suggestion about the yoke. After 40+ years it may be time to give it a closer look.
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