i had a 440 built and the valley pan is two piece. I suspect there's a vacuum leak. installed a aroespace vacuum pump and it doesn't appear to be working. I use eddy performer heads. is there a one piece pan that might cure my ills?? thanks
I built billet valley pans. The AR182A with the AR392 batwing gasket holders would work for that application. I designed them for Trick Flow heads but they'll work with the Edelbrock heads as long as you are using a single plane intake.
