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vince1 · 07-24-2019, 07:16 AM

I've got the heads sitting on with bolts ready to torque and then I notice the center hole on the RH head where it meets the intake manifold is half plugged with what appears to be carbon. The left one is clean. Where did the carbon come from and what is the purpose of that hole?

07-24-2019, 07:16 AM	#40
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,164	Re: 79 350 overhaul I've got the heads sitting on with bolts ready to torque and then I notice the center hole on the RH head where it meets the intake manifold is half plugged with what appears to be carbon. The left one is clean. Where did the carbon come from and what is the purpose of that hole?