contemplating twin turbo 572 Hemi

Have been thinking about if it's possible to run twin turbo set-up in B-Body early or late and putting the turbo's in the rear.
Now have 572 gen2 with EFI on it.
Turbo lag would be pressent but it's a street car and cubic inches would help in beginning.
Any body have set-up like this?
SB/RB/Hemi?

I know there's very little use for this much power on public roads but I can't get the idea out of my head.
Have been back and forth between Pro-Chager and 2Turbo.

Looking for about 1200HP.
Should not be a big problem to obtain.
Will have to go trough engine and reduce CR.
Have Stage V heads now which are GR8.

Tried to find some more info on the twin turbo'd 66 belvedere build by Troy Trepanier.
But no specs on turbo's turbine and compressor side.
Difference between 572 and 528 isn't that much.

All positive tech input welcome.

I'm a roots guy but BIGTIME ahs shown what a Procharger can do!

Hi Hemi-itis.
What do you mean with bigtime?
Is this a company.
Maybe a link to them.
Google does not give info.

Bigtime Automotive, Bob Romano's dart. Runs 4.60s

With rear mounted turbo, 572 cubes, street car, only looking for 1200hp, intercooling should be easy with that much plumbing, is there a real plus going with twins?

I wouldn't even bother intercooling its only gonna take about 10 psi. whats the current compression ratio?

He's a Moparts member

click=> bigtime

Ran a f2 on my 548 hemi.
Made 1200 easily. Would have went turbo but there is no room with a hemi in a b body with inner fenders.

My line of thinking was with that much tubing in a rear mount, it would be the inter-cooling.

true! LOL

With twin turbo on that size Hemi motor it should make 1200 HP with 5 lbs. of boost on pump gas at 6000 RPM
How good, and how big, are the rear tires and suspension

You can EASILY make your goal with one turbo. When I saw the title I figured you were going for 2500hp. It will take a good chassis and power management system to put 1200 to the ground and make it stick. My $.02Dave

The hard part is getting the exhaust pressure out. Precision turbo is going to be your best bet for sizing correctly.

You can achieve the HP you want with a single 88mm.

I run 4.80s now at only 20 psi, I have a ton left in my car. The hard part is putting it to the ground. I run a single 106mm precision turbo

I went with a procharger on my small block only because I already had it lying around from another project I parted out and also because I love the sound of a big overlap cam.

With that said, I don't think I have ever seen anyone who DIDN'T go significantly faster after changing out their procharger for a turbo. Of course most guys who go from superchargers to turbos are also changing other things in the process, but the exhaust restriction of a turbo I'd imagine wouldn't be nearly as much of a parasitic loss as the belt drive of a blower. Not to mention you don't have to worry about belt slip ever.

I think the nicest thing about turbos is being able to dial the boost in very easily to meet track/street conditions.

Twin as to single turbo is looking at the idea of 2 different sizes.
1 for lower rpm en 2e to follow.
Am in the very first stage of thinking about it.
Have a good book about turbo set-up.
But why invent the wheel again.
My speedshop guy advices to go pro-charger.
He may be right . But what if ....

Just because of the less hassle to install
Twin t setup will be more unique though...

If unique is the goal, do a rear mounted single Turbo with a Procharger.

Do the crank-mounted prochargers have the problem of slipping/throwing belts, or is it just the ones that are mounted up higher to the side that have the problem?
Ron Bookman(spelling)here on Moparts has a drivers side mounted procharger that runs low 8's in his Dart and I know he's pretty frustrated with tearing up belts.
I love Prochargers, they seem to be the loudest cars at the track.

If you go turbo, find and work with somebody who can take the info about your engine and properly size the turbos and plumbing, if you get the wrong size turbos, you will not be happy with the results and driveabilty will be terrible. Getting the turbos to spool up and make power at the rpm's you want to drive the car at is critical to making the system work as I think you will expect it to. A blower is much easier for the do it yourselfer, and makes lots of power.

I never threw a cogged belt . Just need a ridged bracket

I wouldn't want all that hot plumbing under a street car. For a single rear turbo you need 5".

Blower is cool looking but always has boost.
ProCharger is easy and nice power . No boost when not wanted.
Turbo´s are big hassle to get right. Don´t want to spent MRE amount of cash for mirrored turbo set/up.

To many variations to go to.
Have a guy here in Holland who has turbo dart. He could be the one to talk to.

With a blower, there is no boost at light throttle.

Have you seen David Meyers twin turbo (in the back) 66 Hemi Belvedere? It sounds like what you want. It completed drag week, goes 9's in the quarter, 208 in the standing mile.

Twin Turbo Hemi

That's the one I ment before.
But no data on internet about MM of turbo's etc.
Would be about the same I need.

The sizing of the turbo(s) is the most important factor. If you get that right, you have no problem meeting your goals, and like someone already noted with very small boost. Means you can use a pretty high cr, even without the boost you still have 572 cu in worth of hemi power, so you don't have to be so accurate with everything. Nice amount of plumbing is needed though...

CR is now about 10/10.5:1.
Perhaps there's need to get in to the engine and have slugs with lower CR.
Thanks for all tips until now.
Keep it up.