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Tim Cline · 08-13-2014, 08:13 PM

You may have to pull the valve covers and clean out the oil return drain holes. I have seen those stopped up a bunch of times causing smoking at different times. It also could be worn valve seals/guides. Also that engine should have a vent at the rear of the engine block that connects to the carb with PVC valve or (not sure what years) had road draft tube that vents downward. I know for sure 63 to 67 283/327 had the PCV set up.I hope this helps. If the rear vent is connected and working then you wont need vents in the valve covers.

08-13-2014, 08:13 PM	#2
Tim Cline Registered User Join Date: Jan 2004 Location: North East Alabama Posts: 47	Re: Smoking Issue You may have to pull the valve covers and clean out the oil return drain holes. I have seen those stopped up a bunch of times causing smoking at different times. It also could be worn valve seals/guides. Also that engine should have a vent at the rear of the engine block that connects to the carb with PVC valve or (not sure what years) had road draft tube that vents downward. I know for sure 63 to 67 283/327 had the PCV set up.I hope this helps. If the rear vent is connected and working then you wont need vents in the valve covers. __________________ 67 GMC SWB Project:60 4BM 350 4SPD 67 Chevy C10 Custom LWB V8 Project 69 LWB IL6 3 on tree project 71 SWB Frame off project 72 LWB C10 Factory Tilt Project.