Dizusters 360 turbo car can easily run 9.80s@ 3750lbs, 3.55 gear, drag radials.
Doug

What's the budget for this effort?

12 to 15,000$ I would think

Your typical B body like you're describing will likely be around 3700-3800 lbs. You'll need a REAL 825+ HP at the flywheel to run the number you want.
You can build a stout, but streetable, 512 and hit it w/ a 200 shot every now and then to go mid 9s.
Or go big or go home w/ the 512 and put some decent compression in it, E 85, and bigger heads than the Trick Flows, nasty roller and try to go mid 9s on motor. Either way, the stock block will be a time bomb.
Or do like I did and get a strong aftermarket block and build a big, but streetable, 572" motor that'll run mid 9s all day at 3800 lbs on pump gas.

Assuming it's a stock car, but with appropriate chassis and wheel/tire upgrades to handle the extra power, I would think you will need at least 850hp to get you mid 9s. Late 90's I ran mid 10s in a stock steel body and full interior 68 charger. Had a Indy headed 451 that made about 730hp. No cage, 8 3/4 w 4.30 spool, 5200 converter, 8" steel wheels w ET streets.

find his combo and copy it

Looked at a few numbers today.

The correction factor from sea level to 5000’ is about 1.05 for ET, so a 9.50 is close to a 10.0 @5000’.
The Moroso chart shows 825hp for a 9.50@3800lbs, and “most” cars need about 10% more power than indicated to get it done.
I’d be shooting for 900hp if that’s really the target ET.
Less weight = less power req’d.

Basically, that ET is about 4.6lbs/hp if the car is sorted out.

Here is a picture of my 70 GTX which is same body as 70 RR.
It has a Chenoweth built 493 stroker with Indy SR heads. You will need more with all the street goodies on the RR.
MJ

A motor combo in another thread is a good thing point:

Who has a good cam recommendation for a 572 with indy 345 cnc 2.25 intake 181 exhaust heads. Indy tunnel ram with to alky 750 carbs. 14.1 compression with diamond flat tops. 4.500 bore 4.500 stroke.

I dont really have a budget, I was hoping for 10-12K for the engine or so plus whatever power adder I go with.

From the sounds of it, I might build this to a 10.5 street car and pick up a lighter car for racing.

NA?

Yes, 1050 carb with Indy intake.
MJ

I dont really have a budget, I was hoping for 10-12K for the engine or so plus whatever power adder I go with.

From the sounds of it, I might build this to a 10.5 street car and pick up a lighter car for racing. [/quote}


10-12K isn't even close with new parts for a 900 hp 572. Mine was built from a combo of used and new. If all the parts were new it would be close to 20K. It'll run 9.20@145 at 4500 D/A, 9.0@150 at 1200 D/A. A dominator and single 4 might be a little quicker. 3340 race ready. The Turbo Late Hemi or SB stuff should get it done cheaper.
Doug

Doug, I drool every time I see that pic.

The easiest, best, AND cheapest way would be with one or more turbos. Especially if you want to actually be able to drive it on the street too.

Haha, yeah, not Mopar under the hood...

For the record, building a 572 or an after market block was never in any of my plans.

This was linked to me from some where, but I cant find who posted it. Anyways, what about a setup close to this with a 512" motor and EFI?

https://www.hotrod.com/articles/mopp-0604-440-mopar-engine-build/

And I also read these original blocks can hold more power if the engine is "boosted", is that true?

What does someone charge to fab something like that up? I dont have the welding and fab skills for anything close to that.

I'd run a Late Hemi with a turbo. Stock block and forged crank will hold 1000 HP w/o issue. Stock heads are very good. aftermarket piston/rod for boost. Use a knock off Drag Pac intake. 20 psi should get it easy.
Doug