Quote:

There was time(1960s-early '70's) when a lot of dragsters used 8 3/4's and cases were made out of different materials.. I would guess they were all 742 cases because the pinion isn't tapered, which is the weak link of a 489.




The weak link isn't the taper so much as it is the crush sleeve that can get loose with repeated hard usage. A solid shim replacement setup will cure that.

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