440RB INDY DUEL PLANE OR RPM INTAKE HELP

I don't have the 440 M1 single plane to measure. The carburetor pad height on the 2D Indy is 5.25" and the pad height is slanted on the RPM, 4.90" front, 5.80" back and 5.35" in the middle. The Indy is a really good manifold and is more designed for a Max Wedge port.

I would really like to see you get your 700hp, but the cam may be a little small for the rpm's necessary.

Yes the EFI stuff works. We've made equal to or a little less horsepower with the EFI. Certainly not enough difference to even worry about.
Also i have been reccomended to use the holley stealth system.
Im sure the engine im going to use it on will go tad over 600hp but a holley dealer tells me it will work just fine. he tells me you can turn up the fuel pressure and it will compensate. But its limits are 650hp. What have you played with and have you got any comments on this