Here's my combo:
440 .055 over, 4.25 crank
Procomp CNC heads
Comp XR292 hyd. Roller, .585/.580 w/ 1.6 Hughes Rockers
Proform 950 Race Series carb
Edelbrock RPM intake

Motor made 572HP @5700 and 620 ft-lbs @3600
I chose the RPM intake with hood clearance in mind, but I had to order a six-pak hood anyway b/c of the ProComps.
My question is, will it be worthwhile to swap to a Victor or Indy intake? How much HP do you guys think I will pickup with an intake swap?

The Victor really awakes in the mid range and up.
Though it is responsive even in the low end on a middle weight car.
Depending on your duration, Head work, gearing etc the Vic may pick you up a little or better.
I would await for some intake gurus on this board that will set you in the right direction.
My Vic works swell with my stage 2 ported heads and stock port windows.

The heads are fully ported and the duration on my cam is about 250* @.050. Car is a 69 RR w/ 3.55 gears. I can afford to lose a little down low if the HP gains are there.

I just ported a big block chevy manifold (R&R) on the dyno, It gained 28 H.P. from out of the box form, so yes, the Intake can make a large difference if your going from a fair to a good manifold....

If the RPM intake is port matched to the heads I doubt you will gain anything in the rpm ranges you have indicated - and you will loose tq in the 2-4k range

700ho easy with a Victor Intake and a real cam. Put a cam in it that will let the engine RPM, and take advantage of some of that good flow rate...

M1 two inch spacer

or victor 440

The RPM is port matched to the heads. And I will eventually go to a big solid roller. At that time I will definitely swap intakes, but I was thinking if I could make some decent gains I would go ahead and swap now. How much HP does the Indy dual plane support?

I do have a 1" 4-hole tapered spacer on the RPM now, I will try it if I go with the Victor. Hood clearance might be an issue with the spacer, though. Even with the six pak.

Bump