Quote:
Originally Posted by GRX
Oh my yes. Around the late 60s to early 70s many manufacturers were switching from flame hardening to cheaper electric induction processes. Often the middle of the stick would not heat properly with premature worn center lobes the result. Pontiac V8 were particularly prone since they had double valve springs & higher pressures straight out of the factory.
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most i remember were sb chevys. i worked for pontiac dealership for about 10years but don't remember replacing any cams. timing chains, water pumps and 301 crankshafts were the norm