I am thinking about swapping out my heads on my 470. I have the mopar performance 383/440 aluminum heads. nothing wrong with them I just want to make more hp. It will be less down time if I buy another set and swap vs removing mine and sending them away for porting.

Am I correct in thinking that the head with the best average flow numbers will be the best head, especially the best low/midlift numbers. ie the best 200-600 flow numbers?
The numbers above 600 dont help me or my .590"
cam.

I am looking at cnc ported Eddie rpm/Stealths or Indy S/R's with a bowl port. Well prepped stage 6's would also work.
I want to stay with a non max wedge port, I am currently at 10.4/1 with a flat top and 83cc chambers.

from what I can see the Modern cnc Eddies/Stealths have the best 200-600 flow numbers.
current combo is 400/470 .590 cam 10.4/1 w 83cc heads and flat top pistons 0 deck. M1 and a 950 hp holley/bigs. TTI headers for raised port heads in the car now. 3660 without me 4 spd 4.10's
increased compression from smaller chambers is not a concern. Mostly a street car, but I WILL get to the track eventually. (I hope)
Am I missing something? comments/suggestions please.

A switch to Indy EZ's would give more flow and power for your time and trouble. The smaller chamber may put the CR too high for pump gas though. The ported Eddy's or Stealth may be the best bet. It just seems like a lot of trouble and expense for a modest gain.

440-1s. If comp is an issue get some fat gaskets.
There was a new kit in the for sale section for 3000.

the 440-1's are a max wedge port and I dont want to go that route for several reasons, no max wedge intake manifolds that fit under my hood, and wont -1s move the power up into the upper rpm's I I try to shift by 6/62k rpm.

from what I have figured the chamber on the Indy S/R will give me 11.2/1 compression with a .039" gasket. if I went to a thicker gasket it would be less, but Im fine with 11.2/1
The thing I like best about the S/R is the room to grow in the future.

But... the CNC Eddie/Stealths seem to have as good a flow number between 200-600" lift as any of them.

I just did another set of real mild port (blend CNC out, & hand do chambers) EZ-1's & flow #'s from .200 up are quite bit better than even a CNC RPM..... Have another set of brand new Modern RPM's in shop @ moment as well for some minor work, & the EZ-1's I just finished, which are copy of the ones I have on my Road Runner are 20-30 CFM better from .300" up...on intake side, & exhaust is very close, with slight edge to the EZ (only couple cfm different @ any lift) & the cost on the EZ-1's with minor hand work is about sames as a set of CNC RPM's. I'd rather have the bigger runner & flow of the EZ's than the RPM's especially on a 470. I like the INDY chamber better than the RPM as well..... The EZ' with basic Prep (CNC blend) end up in 282 CC runner range. Full 295 CNC EZ's obviously push cost higher than a set of Modern or Hughes CNC RPM's. All depends on budget I suppose.....

The MP heads you currently have are basically RPM's with a MP logo.

I have the older heads they are around 5 years old at least. the 311 head I think. not the newer heads. I checked and the new cnc program from modern wont work on these heads.

if I used an EZ-1 or SR with max wedge port I cant think of a manifold that will work and fit under my hood, and I wanted to.

Man your fast...
I have TTI headers for a raised port b engine now.They were ordered for the stage ^ heads. they are 2" to 2 1/8" steps so they should work on any raissed exhaust port . I didnt know that a 2d would fit. I assumed it was taller . thanks

Even if you couldn't find an intake that'll fit, they can be modified to max wedge..

Good deal on the headers, forgot about your low deck.

Yes 2D is about shortest manifold you'll ever find, & work great on heavy B bodies.... My 440 runs 11.20 @ 121 with 242 @ .050" cam, 9.7:1 on 87 octane @ 3700 lbs with the 2D. I went with INDY CNC gasket match option & just blended CNC into runners & called it good enough, Is'nt a race car, just daily driver.

2D looks like stock replacement intake from outside, even has choke well, & cast bosses for factory coil location etc. Funky intake....I did lot of research on it before I bought one, as I'm pretty picky about what goes into/on my personal motors. Certain guys @ track gave me hard time about running a dual plane, but results speak for themselves...

Lots of options...
Are you willing to buy new headers? If not you can check 440-1, Indy SR, Stage 6, Victors, and any of the B1 stuff.
You dont need a 350-360cc head for a 470 inch engine either.
The EZ is the makes the most sence. No new headers, and can support 800HP fully ported..
You can reuse your old rocker gear, and headers, and intake..
This isnt possible with the raised port stuff or max wedge port window.
I would just get a Indy EZ kit, have one of the board guys give it some good work, what they feel is needed for your hp goals...

Ryan , I would like to use the Indy dual plane, but I thought it was only available for the RB enignie. Do they make it for the 383/400 blocks now? that would be cool and my first choice.

Bob, I have the 2" step to 2 1/8 headers from TTI now, they were ordered for stage 6 heads. They are the headers TTI440-200c4. basically the 2" header for a raised port on a low deck (B)or a standard location port on a tall deck (RB)

They fit great and are currently on the car, although I dont think the heads I have are raised exhaust port heads. Thats why i thought the S/R's would be great, bowl ported but stock port window. use my H/S rockers and everything else in the kit from Indy. I can even reuse my M1 intake and it would fit if I got a new air cleaner.

Yeah I'm fairly sure the 2D is tall deck only....

WHAT???? Ryan working on BB heads????

Give Randy Beyer in Gretna a call, he does great port work and could probably have them done quickly. He ported my RPM's on my 499 and it makes 750 HP. He is great to deal with and prices are very reasonable.

It sounds like you already have the right head on the car for what your doing. If they are the same head as an RPM your all set. An EZ head would be nice, but I ran a low deck 451 with your cam(590) and Eddy RPM heads, went 9.80's at 3050#'s. Your carrying alot more weight but should still run good.

I also think those CNC ported Stealths look like a great deal, assembled by MCH.

The heads I have are not the same as the RPM's. I wish they were Id send them in for porting. They are the "311" head. from mopar or the 383/440 aluminum head. they are several years old. The CNC port from Modern on the RPM/ Stealth head looks pretty good for an engine like mine. I have AndyF's book and he seemed to have great results with them.

I dont think my heads are "bad" it would just be alot easier and less down time if I had another set and swapped them out, I can either sell my 311 heads or save them for another build. If I spent 2-2500 on heads and resold mine for 1K I would only have 1-1500 in my head swap. not to bad.

RPM Xtreme sounds about right for you, now if they will come out with it sooner than later!

http://www.edelbrock.com/automotive_new/mc/cylheads/chrysler/bb_rpm_xt.shtml

Josh....You know what I would do... If you have someone nearby...Port those heads..