Quote Originally Posted by RamRock50 View Post
Thank you for your help, geezer! I won't be able to open up the adapter's throat myself, but I know some people who might be able to take care of that for me.
Yeah, you can handle that! Don't even need a die grinder tool - a carbide tip or a stone on a power drill will make short work of that adapter. The alloy is relatively soft and you are only taking off the thin trailing edge of the overhang leading into the plenum ports. Clean it up afterwards with some wet and dry and job's done! You could even go a little nuts on it and try polishing it up for good measure. And please - give that filthy inlet manifold of yours a good clean first with non-caustic oven cleaner and an old tooth brush, it will come up factory fresh.