General Motors claimed they had two problems - #1 being a faulty Parkerization-process surface-hardening on some cams, and #2 a faulty break-in procedure at the factory at first engine start-up. What ever the problem was or is, we had to fix many back in the 70s - and on. Our standard procedure was to replace the cam and lifters with a Crane cam kit. I'm sure there are others just as good, but we had zero comeback problems with those aftermarket cams. My 64 Chevelle SS still has one in a 283 with 160K miles on it. Many of those SB Chevys with failed cams also had failed cam drive-gears since they used plastic coated teeth. They fell apart and the plastic would often plug up the oil pump screen and ruin the engine. Hopefully you installed a set of all steel timing gears and new chain?
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Today's Featured Article - Uncle Cecil's Super A Lives Again - by Mike Purcell. A week or so out of most of my childhood summers was often spent with my Uncle Cecil and Aunt Sissie in the small East Texas town of Maydelle on their 80 acre farm. Some of my fondest memories of these visits are those of learning to drive a tractor at the helm of Uncle Cecil’s 1948 Farmall Super A. Uncle Cecil was the second owner of this wonderful little tractor, but it was almost as though he had adopted an infant. The original owner was a man from Minnesota who bought her from a local dea
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