This is the dual plane 4500 manifold.
Looks interesting.
I don't see anyone talking about it....

Anyone try it yet? Impressions?

I acquired a 426-2 and a Barton/MP 4150 both for an excellent price and plan to test both of them, but for 572ci I'm also guessing it will probably be like trying to breathe through a drinking straw.

I wouldn't think you would need a dual plane with a 572. What carb are you planning to use with the 572? Sounds like a 4150 since both of your intakes are 4150 flange?

I was going to start off with the current stuff, 4150/1000 race demon or quick fuel 950. Just to get it going and see what I think.

I can also do a reproduction 2x4 with two 600s, but it seems out of place on this build so I figured I'd save those for later.

I have run the 426-2 with a 1050 Race Demon and it ran pretty strong. 5.98 @ 115.7. #2950 I am hoping for an improvement with the 426-3 and Dominator carb.
Mine is 572" as well, pump gas, street driven.

Mark

You can use a stage V intake with two edelbrock 800's on a 572 and make near 900HP with incredible street manners - just a thought - Edelbrock makes a dual 4 intake also in two versions fuel injected or carb. 572 you will need plenty of CFM

I have been considering it....I currently use the 426-4 w/o an air cleaner and I am real tight to the hood scoop...I just don't want to kill off 60hp with it. can't find anyone who has done back to back testing on it.

If any of you guy's are looking for a deal, I have an as new Indy3d intake with a new custom 1250 Dominator by Thumperdart, 4 hole spacer and 14" breather base that I will sell as a package cheap due to a change in direction.

How can 2 4 bbls look out of place on a 426 Hemi? Unless you are building a NASCAR clone Superbird. There are some great intake manifolds now-a-days.

I vote that to be the best looking engine in a Allstate in recorded human history.

That's what I'm talking about 😎

Video says +60 over a crossram...wow

Rick not out of place due to appearance but not right for the combination. Maybe I should try it anyway just because....

Thanks Rickseeman ! I would like to use a Stage V 2-4 intake , but I don't want to modify the cowl again. The only 2-4 intake that fits under the cowl is a Rat Roaster X Ram, and I expect trouble with that on the street, but I will try it. I am testing the 426-3 at the track this spring. It works well on the street. The 426-3D is an option too.
Thanks,
Mark

I don't know your combination but that 2 Holley inline single plane Stage V looks like it would run good.

The 426-4 works well, I just want the safety of an air cleaner...without loosing hp.

Zippy...I don't now what heads you'll be running or how much cam you're gonna use, but the Barton/MP 4150 intake will be stronger than the Indy 426-2.
I'd think the 426-3D would rank below the Barton, but be somewhat similar to the 426-2.

I should have taken some pics the other day, but I will later this week...I have my hemi out and apart. I have the Barton 4500 manifold on the table next to the big Indy 426-4.

Planning on 110-M heads and a Crane .420 roller which is 276/280 on 112. (Gross lift isn't really known yet because rockers are undecided, but right around .630).

Much as I hate to admit it, overall specs are going to end up not too far off from Indy's 572 street crate engine. They are claiming a big improvement when the dual plane/4500 is used on that engine. But I have yet to see one in the wild or talk to anyone who has tried it.

If your heads are ported, I think you're gonna be leaving a lot of power on the table w/ anything less than that Barton manifold.

I guess it's how you want it to act. I want max power and can put up w/ what some would probably consider too "racy" of an engine for the street. That Indy 426-3D should be a great street intake. If my dad didn't already have a factory Vanke modded dual 4 intake, I'd tell him to get that 3D manifold for his 540" street hemi.

I have a 426-2 and a 426-3 manifold but never did any dyno comparisons between them. I opted to go with my dual Indy Dominator tunnel ram instead just because Hemi's are supposed to have dual carbs. Looking back on it now I wish I would have dyno'd it with all 3 manifolds. Undoubtedly, the tunnel ram is making more power though.