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D13 · 04-25-2022, 07:42 AM

Early covers have only the oil fill hole in the front and run a breather in it ('67 Biscayne).
Next step was early emissions, PCV in rear top, air in on side at front with a hose to the air cleaner, and flat oil fill cap ('66 BelAire California emissions, 1969 C10).
Then you start getting into the no script covers. I 'think' the GMC's may not have had script covers, never owned one that early. I think Chevy went to no script covers with the integral heads, 1976? or so.

04-25-2022, 07:42 AM	#3
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: 1964 292 Valve Cover Early covers have only the oil fill hole in the front and run a breather in it ('67 Biscayne). Next step was early emissions, PCV in rear top, air in on side at front with a hose to the air cleaner, and flat oil fill cap ('66 BelAire California emissions, 1969 C10). Then you start getting into the no script covers. I 'think' the GMC's may not have had script covers, never owned one that early. I think Chevy went to no script covers with the integral heads, 1976? or so. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors