I have 87 302 5.0...I took all the smog stuff off...in the back of the heads there was a exhuast toob coming from each head ..I took those off,cut the toob then welded it together...now i have a leek from one side..My ? is does anyone know the best way to fix this...can't i just take a pipe threaded bolt and plug it with that ...and if so does anyone know what sizt it is? and I can't find it at the ford dealership..
Stop by any good head and block shop and ask them. I don't know the exact name of it but it will thread in almost like a helicoil to block the hole and will have threads on the inside to bolt your accessories in. They should know what you are talking about and if you ask real nice will probably just give you a couple