As long as the intake ports at the heads are the same size or smaller than the head ports your good
I would mark the lower half that is bigger than the top and take the top off so you could grind those ports to be the same size or bigger than the top
You don't want any lips sticking out into the air flow, it causes reversion and reversion causes air flow standoff and turbulence and disturbs the air flow
BTW, some of those intake had the bottom cast big enough so you could grind some of the excess material out of the bottom ports at the heads so you could make them work on Max Wedge port heads
Does yours
You're amazing, cab. Seriously. You know your stuff!
I'm not sure what I've got as far as the intake is concerned. Should I take it off and see what's going on down there? Where it meets the heads?
Are you talking about grinding the tops of the intake runners so that they're smooth? Where it looks almost like a casting line at the tops of the runners? I can yank the top off of this manifold and see what's going on in there. Should there be a gasket between the upper and lower portion, you think?
BTW - I had a great conversation with the tech guys at Edelbrock this morning. They suggested what you all have been suggesting, but specified that I run a manual choke to avoid starting issues. That was something I needed help with, so that's good news. They suggested the #1905, a 650 CFM AVS carb (a pair of them, actually) and thought they would work well even with the stock cam and heads.
