I just removed the intake and carb on a 68 400. Should I use the front and rear manifold gaskets or permatex? I am going to install an Edelbrock performer manifold and 600 cfm carb, any advice or tips would be greatly apreciated. Thanks!

 

permatex

 

Steve, I wouldn't use the rubber end gaskets. Instead, put a bead of Permatex Ultra black down on the block surface and then set the intake manifold straight down on it. As added insurance, you can take a center punch and punch 2 rows of dimples on the block and 3 or so rows on the bottom of the intake manifold end seal areas. When the Permatex dries, it will have "fingers" in these holes and will resist pushing out with crankcase pressure.

Steve

 

Thanks for the tip guys.

 

nice tip pilot,