Heat crossover ????

yellow rose said
Sunday I need to block the heat crossover in an intake manifold. I can’t do it with a gasket (I could do it with a gasket, but I’d have to machine the intake to fit with thicker gaskets and I don’t want to do that) so I’ve read (IIRC) that some have stuffed the crossover with aluminum foil as tight as you can and it worked.

Any one done it and had it work? I’m also going to test a CoolCarb spacer and that’s why I need to block it off.

TIA
YR

I just bought the Mopar performance intake pan gasket!! It just doesn’t have the hole for the crossover !! But the gasket was the same thickness as the one with the hole! So I’m not sure I understand about a thick gasket and having to machine the intake ???? And yes before I bought the gasket I used the foil ! Seem to work fine !! Now mind you this 20 years ago when I did all of this !!