Plaid valve covers
Howdy;
I owned a 1963 GMC Carry All 4x4, 4 speed with a Big Block 305 V6. The engine had the 'plaid' valve covers. Concerning the why's of the plaid valve covers, the story I heard was that at the factory they pulled an engine off the line periodically to tinker with it and check the tolerances, etc. When finished, it was 'blue printed' and put back on the line with the 'plaid' valve covers. Mine was a real stump puller and ran strong. I pulled the heads off at 242K to replace the gaskets and checked the bore and valves, etc. It was less than 10 thousandth wear. I went ahead and bored it 10 thousandths to 315 cu in., replaced the valves, put it back together and it ran another several years as my daily driver and trail buster. A fine truck, for sure...
Happy trails,
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