Posted by Daryl Light on 10/11/2006, 2:20 pm

I've got a 72 400 cid in a Lemans sport conv with a pair of 670 heads on it. I read in a Pontiac performance book that water crossover should be separated from the rest of the intake manifold so I did. I now need to fill the 'L' shaped openings in the heads that were formerly covered by the one piece intake. How do I find out how to do that or what to use? Really could use some help. Thanks much.