Yeah, that is a working theory, and it is loosely supported by facts, but who knows for sure. Facts:
1) There was no damage on any other component other than the tranny front bearing retainer.
2) The clutch fork steel is not hardened. It should be.
3) My pressure plate diaphragm does require 15-25% more pressure to actuate, thus putting more stress on the clutch fork. We tested it on the machine.
Other tid bits of info from the clutch. The flat head pivot ball, that I didn't like as it doesn't cleanly fit the round recess in the clutch fork, they said it is that way for a reason. It traps / retains a nugget of grease. If they were a round, mated pair, it would push out the grease.
They don't like Center-Force. The PP weights are a gimmick that only work at really high RPMs (6k+). They had other comments as well.
They assemble most clutches from blanks there based on ones car and goals.
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1965 Pontiac GTO
455/469 w/ #48 Heads, '65 Tri-Power
9.25:1 CR
Stump Puller Cam
Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00
3.55 Rear Differential
Front: 225/60R15 Height: 25.6"
Rear: 275/60R15 Height: 28"
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