mechanix565

so guys i got a fresh LQ9 with ARP Head Bolts, ARP Rod Bolts, ARP Cam Bolts, 224/224 .580/.580 lift 114 lsa,comp Valve springs, comp pushrods, ported heads, mls headgaskets. im running the stock truck intake. i wanna get a set of fuel rails, 60# injectors, aeromotive 1000 fuel pressure regulator, and a mp t70 turbo. specs on the turbo are

Compressor

-58 Trim Inducer Wheel

.70 A/R w/ 4"(101.7mm) inlet and 2.5"(64mm) outlet

Turbine

-76 Trim Exducer Wheel (P-Trim)

.96 A/R TURBINE HOUSING w/ standard T4 undivided Inlet and an 3" v-band outlet

where should this turbo spool? exhaust will be made with flipped truck manifolds. what stall convertor should i grab? trans and rear end are completely built. 4.10 gears out back. im runnin a walbro 255 will that be enough for 10 psi? also the truck will have a big front mount intercooler. let me know what you guys think and what kind of power is to be expected.

stock48

iTrader: (17)

That turbo is really small for that combo. It should spool almost off idle, and rip at 5-6 psi long as exhaust is passing thru the waste gate. Prob anything over 8-10psi its going to start choking you to death. The p wheel is your cork.

mechanix565

so how about a borg warner s475? with 1.32 AR and the 75mm extended tip wheel

nodrok

That will definetly get the job done. You may more lag due to the lare exhaust housing. That can be compensated with the right stall converter and or spool valve. I called Forced inductions about mine. They are very informative.

You will need more fuel. I would get a a1000 rather than running twins. May need bigger feed and return depending on hp goals.

You should easily be in the 700-800hp range. Make sure you get a good tune. You will definetly need more fuel at that point.

01Z28Camaro

This man speaks the truth. I was limited, it made the same power at 8 psi as it did at 16 psi. It might have that much at intake but exhaust corks the engine.

mechanix565

well borg warner makes the same turbo with a 1.10 AR its 150 more. will that be a better plan? also the stock floating rods will take 800 hp without bending? im running a performabilt stage 3 4l60e you think itll hold up or is a th400 in my future? im running the stock truck intake will it be ok?

mechanix565

what do you guys think

buick_lsx

i use the s475 with the 1.10 exh. on my lq9 and i love it...at 3000rpm i can get 7 psi on the 2-step

mechanix565

could i run the 2 step with a 4l60e? what brand and how do you have it set up. ive always been curiious about running one on a non trans braked auto or if it was only for the manual guys

mechanix565

is 10 psi daily driver safe on pump. keep in mind ill be boosting constantly i dont drive easy

buick_lsx

2 step will work with the 4l60, i have the lpe-2, just have it setep on a toggle switch to arm it at the track and then all i have to do it touch the brake to activate it and when I launch and let off the brake your gone...not just for the manual guys

i have 9psi daily on mine and beat on it as well, 562rwhp on a dyno jet through an unlocked 4l80...

NemeSS

iTrader: (127)

Have you verified that the engine is a lq9 and not a lq4? They look identical from the exterior and even use same heads and intake. The lq9 is 10:1scr and the lq4 is 9.4:1 scr. The lq4 will handle up to 10psi on pump gas with proper calibration and enough fuel supply and fmic. 10psi may be pushing it on pump with a lq9

mechanix565

I've had the heads off and rebuilt the whole motor. It is indeed an lq9 with flattops. If I need Meth injection ill put it in idc

buick_lsx

i dont need the meth at 9pi for my setup fwiw...i dont care to run any more timing and when i run more boost than the street setup its only at the track and then i run 110 and say 3-4 more lbs