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CG · 01-11-2009, 03:08 AM

Well honestly Ive never seen a set that was chromed from the factory. And I collect valve covers for fun. Always good to learn new things....

I did a little homework on this style of cover. Here is an answer I got from a person that knows the real scoop....Thanks for bringing this up 54 jimmy. I love learning.

"Chevrolet offered chrome script valve covers in 1967 only. The chrome covers were used in three instances L79(325HP 327) Chevelles, Z28 and SS 350 Camaros. The L79 was rerated to 325HP to diminish the appeal of the small block. The sales emphasis was on the big block SS 396 option in three horsepower ratings 325, 350 and 375.
1967 was the last year for the vented block for a PCV, vented oil fill tube, and the script valve covers. In '68 the vented valve covers were introduced since the engine blocks were no longer vented. The PCV system was routed from both valve covers. One valve cover hose had a PC valve which ran to the base of the carburetor and the other valve cover had just a hose that went to an outlet in the base of the air cleaner.
Just a little history as to when and why the script valve covers were discontinued."

01-11-2009, 03:08 AM	#14
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,131	Re: what are these valve covers worth. Well honestly Ive never seen a set that was chromed from the factory. And I collect valve covers for fun. Always good to learn new things.... I did a little homework on this style of cover. Here is an answer I got from a person that knows the real scoop....Thanks for bringing this up 54 jimmy. I love learning. "Chevrolet offered chrome script valve covers in 1967 only. The chrome covers were used in three instances L79(325HP 327) Chevelles, Z28 and SS 350 Camaros. The L79 was rerated to 325HP to diminish the appeal of the small block. The sales emphasis was on the big block SS 396 option in three horsepower ratings 325, 350 and 375. 1967 was the last year for the vented block for a PCV, vented oil fill tube, and the script valve covers. In '68 the vented valve covers were introduced since the engine blocks were no longer vented. The PCV system was routed from both valve covers. One valve cover hose had a PC valve which ran to the base of the carburetor and the other valve cover had just a hose that went to an outlet in the base of the air cleaner. Just a little history as to when and why the script valve covers were discontinued." Last edited by CG; 01-11-2009 at 05:06 PM.