Dave,
Pontiac had an 11 inch clutch behind 73up 455's and some 400's I could be wrong on the starting date. Nearly all had a small crank hole. Early had the large opening. Your clutch more than likely went up because of oil on the clutch (been there done that). I wasted a new clutch in one day once oil got on it. It will burn up and blue the flywheel. Synthetic oil really does it quicker due to it being a better lube.
__________________
Try calling CRUSHPROOF! 512-386-9889
|