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I'm currently in the process of purchasing a 1967 Corvette Roadster with the 300HP 327 base engine.---- So lately I have been looking at quite a lot of pictures of these cars and I have noticed that approximately half of all the 300 HP engine pictures have the orange painted steel valve covers and just as many have the aluminum ribbed style. ----- I would have assumed that the orange/steel ones were factory correct, but the fact that so many of them have the aluminun covers is now making me wonder if the factory delivered the base engine cars with either or?------------ OR is this just a popular embellishment ???
The finned aluminum valve covers were only on the optioned small blocks. Base engines 63 to 67 had steel covers. The 63-66 steel valve covers were different than the 67's. In 67, they went back to the 1961 283 engine valve covers, identical to the picture above.
In 67, they went back to the 1961 283 engine valve covers, identical to the picture above.
Actually, the '67 stamped valve covers were new, and different from the older 283 stamped covers; the old 283 covers were almost vertical on the ends, and the '67 327 cover ends tapered back at about a 15*-20* angle from vertical.
Regardless, if I owned ANY Corvette with a SB (and I do) and it had steel valve covers, they would immidiately come off and go into the trash and be replaced with the finned alum covers---------------------------------that also includes pass cars!!!
My 70 Chevelle with a SB400 and 51 Chevy are prime examples!
Oh ya, and the 420SB in the jet boat!
I've thrown away more stamped steel valve covers than I can count.