eldebrock tunnel ram

I am running a eldebrock street tunnel ram and have a vacume leak where the top half mates to the bottom half, is this a common problem? I was thinking about putting silicone between them instead of the gasket but am not sure what type I can use with gas.

 

I'd just get a new gasket. They can't cost more than a few dollars, possibly cheaper than the tube of good gasket maker.

 

I just put it together it has about 20 miles on it and was wondering if there was a better way

 

Are the surfaces perfectly flat? The gasket should suffice, but a little black rtv wouldn't hurt.

 

No gasket just ultra grey silicone works for me, only problem is you'll need a pry bar to get it apart again.

 

Thanks, I have some ultra black will that work as well?

 

I've had decent luck with ultra black. Just make sure you petit fully dry. Hope it works!