Originally Posted by Panther

I've seen good results with the Merc Daul Plane Intake Manifold with a spacer. With the Cubic inches you are running and the RPM range you've indicated I really don't feel you need a single plane intake. Also, the dual plane intake builds a little more torque down low where you need it. In some cases, I've even seen some HP 500 motors make more power with the dual plane. A good friend is running the merc dual plane on his 540's and the motor makes lots of torque and you don't need to rev the piss out of it, the dyno numbers proved it.

Originally Posted by open72

how much cam in that 540 ?

Originally Posted by open72

i am using the same intake ,with a 2 inch spacer with 610/587 540 ci 9/4/1 comp and canfield 310 heads. should make real good tourqe and not have to rev it out. i will post dyno #'s after it's done.