The Magnum port is shorter in height than the 340 LA port and will leak out of the bottom. I had to make adapters to go from Magnum heads to the 340 exhaust manifolds.
Check out post 14.
So what do adapters look like? I really don't have any equipment to make adapters. How about putting the 2 different gaskets, 340 and magnum, together behind 340 manifolds.
