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 - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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