1965 F250 Exhaust Manifold Gasket Replacement

[@vidman008]

The Over Sized Nuts ( Heavy Hex Nuts ) are good.... I have used them a few times myself. In your case, the size of them, and the lack of Clearance was something that would catch anyone by surprise. It's one of those hidden things that you just don't think about.... I like the Stainless Steel for sure. I have been known to use some S.S. from time to time..... Good Job....!!!!!

[@newjerseybill3521]

Not sure how I missed this vid. Probably better late than never, @6:15 "heat riser valve" What this does is force hot exhaust gasses from this side of the engine to the other through a chamber in the intake manifold. This help vaporize the gasoline droplets in the air flow for better cold engine combustion.