390 w/open chamber heads

Just a little note about the Performer 318/360 intake....the ports match up perfectly with 318 2bbl intake gaskets. Felpro # 1243 2.08 x 1.05 ports.

You may want to get a F/p# 1213 w/ 2.27 x 1.16 port and see how it matches to the intake and your heads, possibly matching both intake and head ports close to eachother with it if you do any gasket matching.

I'm running the Performer on my 318 and matched my 318 2bbl heads to the 1243 gasket, there was a HUGE difference between the 2bbl gaskets and my 2bbl heads. See pics.

P.S. I didn't do anything to the intake, again, as now it all matches up perfect, nice smooth transitions and everything!!....already test fitted everything to the block. :)