cl4nsman

Hello guys, first time posting here (i read a lot but i decide to go turbo now)
Ok let's start i own a 700hp/650lb-ft v8 555ci bbc engine that i want to go turbo, im from Chile, South America and i will to travel to USA in a couple of weeks so is my chance to get all the parts there, Let's make a little description of the engine:

4.560x4.25 (BORE STROKE), all forged, 10:1 compresion ratio (i will drop it to around 8.0:1 to achieve my boost, 6psi for start and max 10psi), all of this on premium pump gas (i can't get any better in my country), the block is a dart BIG-M

CAMSHAFT:
GRIND CHB283/292R114+2
DUR @ .050 283/292
LIFT .655/.663
LSA 114
INT C/L 112
LASH HOT .020/.020
SOLID ROLLER

-ENGINE: Performance Crate Engines - Chevy - Big-Block - Edelbrock/Musi 555 RPM EFI 10.0:1 (697 HP & 643 TQ) - Edelbrock, LLC.

-I was reading, and the proflo-2 injection (1000cfm) can handle boost so i'm covered with that, But i have 60lb/hr injectors now will them work? or i must upgrade them?

-I can achieve 8.22:1 comp ratio with this pistons http://www.summitracing.com/int/part...54-8/overview/ and some MLS gaskets

-I will go with a twin turbo setup, and i was thinking about GT40, GT42 AND GT45, need some advice here, i will also use intercooler in front.

-I want to achieve around 1000hp with the turbo setup, it will be possible with 6 psi? or i need to push it to 10 psi?

-About the camshaft, is a good one for turbo or should i get another grind? i want to stay in the same rpm range btw (6500rpm max)

-i also don't know which wastegates and blowoff to use

-i'm running dry sump

-the engine is for sand hill climb offroading in a 4000lb jeep with sand paddles

PD: i have experience in boosting engines with Roots superchargers but i'm a little new about turbos and big displacement.

Mauricio

dmaxvaz

iTrader: (1)

Mauricio, this place is mainly LS engines. I would go to yellowbullet.com and ask over there for BBC info.

Razor

Agreed.

www.yellowbullet.com

I'd personally find a single shop that not only could suggest the proper parts, but help with tech after your sale. That's gonna be huge especially since you're OCONUS.

Depending on your goals, I'd look to upgrade a few items on your 555. There has to be a lot left on the table in that combo at only 700 hp.

cl4nsman

Thanks for answers, i like to read other people opinions, what you think is left on the table with my engine?

Regards

IronBlocked

Twin gt35s are gonna give instant 10psi on that big block

dmaxvaz

iTrader: (1)

I would also contact Steve Morris Race Engines for cams and turbo sizing ect.

Dynospeed

iTrader: (3)

The power is going to be easy to come by. Make sure you have turbos with enough exhaust turbine wheel and housing to not choke out with the BBC. On a budget s466 borgs or even a little larger. You will need more than 60lb injectors for 1000hp. Are you comfortable running meth injection? If so I would keep it at 10:1 unless it needs rebuilt anyways.

NateLS1Mustang

iTrader: (2)

Quick questions: Why only 6-10lbs of boost? And why drop your compression that much to run such little boost? People are running 9.5:1-10.0:1 compression all day long with boost these days.

cl4nsman

I just can get pump gas here in my country, i actually have a 383 with 8.3:1 comp ratio, and a weiand 177 pulling 6lb, and it runs good.

Fuel here is 98 OCTANE RON, i think is like 92 octanes of your fuel, you think i can run more boost with pump gas?.

Methanol is hard to get here too, i was looking a lot of turbos and im confused, what about those ebay turbos? for start, and then get some turbonetics or garrets?

Sorry about questions but i have a lot of them

Regards and thanks for helping

Project GatTagO

iTrader: (7)

Good info here:

http://www.carsandparts.com/Articles...wer-package-1#

More can be found on www.chevelles.com. Search for username: 540hotrod.

Andrew