I also posted this on the alternative intake board.

I have converted a LT-1 intake to use on my 406 with Trick Flow 195 heads and I am having a hard time finding a intake gasket with small enough water passages to work with the intake. I was using a fel-pro 1205 gasket but the water passage in the gasket is larger then the water passage in the heads, and the gasket hole is too large and the intake does not cover the hole causing a water leak. What gaskets have smaller water passages that will work with the LT-1 intake conversion?

Thanks

 

GM 12524653 should fit properly.