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)

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 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

 

I have the pro-flo 2 and just about completely done tuning so if the time comes I can provide you with a proper 2 bar mapsensor tune to start your tuning with.
The 60 pph would be to small or you need to rais the fuelpressure to about 70 psi but 80pph injectors would be better, then you have some room to grow.
Btw, Edelbrock has a great forum to get tuning info from, I am there to.
It would be a aducated guess but I think twin turbo with lets say GT45's you need around 10 psi to get 1000 hp.

 

Thanks for answer.
Will the pro-flo2 works with 70psi (my pump is capable of 90psi btw), which 80lb injectors will work?, thanks about the tune too

Regards

 

Well that depends on what your sytem has now, propably the small pico style injectors, just like I have her shown on the right side:



The Profol would work with any pressure exept you eed to install an adjustabel fuelpressure regulator.
But I would keep it at stock 45 psi and just get bigger injectors.
I played with it becouse I have 44pph injectors that are actually to small for me, Now I make 550 hp to the wheels with 50 psi fuelpressure at 12 psi.
I maxed out my fuelmap, thats all there is, so I should get bigger ones if I want to grow, and man do I want to grow

 

I Have fuel pressure regulator, and this injectors: http://www.summitracing.com/int/parts/edl-3686/overview/
what AF/R are you running?

 

Oh, you've got the long Bosch styles.
Check Ebay for the Bosch style 80pph injectors lots of hoice there, you can also contact Edelbrock ofcoarse.
My a/f ratio is
11 in boost
14.5 idle
close to 15 during low rpm cruise mode.
and take 1* timing back per psi boost at wot
and use high octane pumpgas.

I do run alcohol/water injection when in boost instead of a intercoler

 

i will go intercooler, here is a little difficult get methanol for water injection, what about wastegate?, i need two of them for twin turbo setup, what size should i get?