LT1PWRD

iTrader: (2)

! old ideas/combo,new setup in my recent post !
Here's the turbo I'm considering
http://www.ebay.com/itm/On3-Performance-76mm-Ceramic-Ball-Bearing-Turbo-LS1-LS2-/130635044908?pt=Race_Car_Parts&vxp=mtr&hash=item1e6a74982c
Replacing the motor in my sig:

Jy 5.3 stock rotator, open upper gap,rod bolts, blow thru carb.
Ls6/lsa cam,918s or equiv springs
317s home port/clean up
Truck manifold hot side
ebay intercooled cold
Supporting ret. style fuel system

The goals are:
93 to get running then maybe go E85 (its near me)
Lookin for 6-700 rwhp
I know this combo is becoming very popular and I've been learning alot here thanks to you guys. Please throw out any suggestions or info i may have forgotten.

T76s10

iTrader: (6)

Why blow through carb? Tuning that thing is gonna be a headache. The majority of us stay fuel injected forced induction wise and tuning is much more precise. I'm not saying blow through can't be done, but the tune is the #1 thing thats going to keep that engine going. The turbo I think is a great choice I'm going to be running the same one on my 5.3 this spring except I went with the sleeve bearing for $350. With a v8 the turbo is going to spool pretty quick anyway so that's why I went with on3's cheaper 76mm. I'm not sure what to get converter wise I just talked to a local shop and they set me up with a 2800 stall but your gears are pretty short for a turbo car. Get something between 3.08-3.55 range so your turbo can pull you through the 1/4 for higher trap speed.

LT1PWRD

iTrader: (2)

2 reasons really. 1) i'm pretty savvy with tuning a carb and doing the mods needed. 2) i already have an expensive ProSystems carb from my current combo I'll be using. I totally agree on all the benefits of f_inj and would love to do it. I just cant afford the initial setup and tuning that you have to pay someone to do.

T76s10

iTrader: (6)

That's totally understandable then. That was my plan at first but starting from scratch I decided to go fuel injected because I have never tuned blow thru carbs and I heard they were a headache and I priced it out and it would be about the same price either way. I wanna see how this turns out though I can't recall seeing anyone do a turbo ls build with a blow thru

LT1PWRD

iTrader: (2)

First lemme say,HO LEE CRAP ! I cant believe i started this thread 2 years ago! WTF!

A couple changes/updates. Actually got parts going!

Single T76/GT45/S400,not sure yet, goals are 600-700rwhp
Scored a 2006 5.3 $350
LS2 intake
90 mm cable throttle body
LS9 cam/springs
Dirty Dingo solid sliding swap motor mounts (say that fast,lol)
CTS-V oil pan
MSD Atomic LS2 EFI setup
swap to 3.31 gears
Flipped stock manifols
etc...

Still gonna be your as basic/budget as can be,but we all know how that goes...

wanted to get your feedback on these turbo specs. I think it'll spool nice w/o being restrictive on the top end for a .96 A/R on a 5.3 I'm thinkin might be a little doggy with a 1.10/1.15 no?

T72 journal $428
T72 BB on comp side $582
- 4" Air Inlet
- 2.5 Outlet
- Wet Floating Bearings
- Oil Cooling
- Standard T4 Manifold Flange
- 72mm Wheel Compressor , P Trim .96 A/R Turbine
- 102.4mm/72.1mm Compressor Wheel , 74.1mm/64.6mm Turbine Wheel
- 3" V-band Hot Side

T76s10

iTrader: (6)

Lol I totally forgot I even posted that stuff. Funny thing is I'm going to try the blow thru thing now and your doing fuel injection.

LT1PWRD

iTrader: (2)

Funny how things change... Part of the reason for me is because of the newer efi systems are much more user friendly now.

forcd ind

iTrader: (7)

I tell you one thing, for me an LS blowthru carb'ed setup was so much easier than my current project, which is FI-I used the Holley HP, was way over my head, but computer savy guys got me going in the right direction
still not where I want to be, but close-if it ever stops snowing I can do more data logging
my old 6.0, Edelbrock intake, CSU blowthru carb, MSD 6010 was way more friendly for me, lol-i don't like a lot of buttons to push
I have the Dirty Dingo mounts, they were not sliding, I would be weary of sliding ones, seems the bolts could tear right out of the mount as opposed to screw in-just my opinion of course

rpturbo

iTrader: (47)

I am curious as to what about the Holley HP system you were having issues with? I am starting to look into that system.

Wicked69

I think it was more because he has tons of experience tuning carbs. If you are not a computer guy then the Holley Hp is tough to learn without someone walking you through it. I feel comfortable with computers and it was tough for me at first. I finally had a friend walk me through all the pages and I couldn't believe how easy it is. Sometimes it takes some understanding just to figure out the verbiage. lol

forcd ind

iTrader: (7)

its a great system, it was for the most part plug and play-I just don't understand computer language, and there were to many things you could change that I didn't understand, so I just started changing stuff out of frustration not knowing what I was doing-I needed a man. for dummies, lol
your dealing with engine coolant temps, air temps, injector usage, fuel graphs, timing graphs, learning graphs, it was over whelming for me, but I am getting there, ton of guys have helped from diff sites
I tried making it run like a carb., instead of run like FI-it was probably the wrong choice for me, but I am making it work, and would be hard pressed to give up the data logging feature, its almost like a dyno on your lap top, go out and make a hit, look at the log and see everything the engine was doing-a couple key strokes and make changes
using a 4 hole TB might have been a better choice as opposed to one 92MM TB, but I got deal on the LS3 intake and TB so that's what I used

LT1PWRD

iTrader: (2)

Well,its been awhile since my last update. Actually,its been running for a couple months now. The weather has just completely sucked to get any real road time on it. i have put around 40 miles on it on the nicer days in between flakes. This is my first turbo V8 car/build and i gotta say, it lights off soo ****** fast! (almost too fast) Builds boost on tip in while cruising so damn easy. My last combo ran 11.50s but this combo seems to far surpass that. i couldn't powerbrake and boil the tires at 50mph like i can now,lol!
The power and response is unreal and soooo addicting! pics coming

Final up and running combo (for now) as follows....

JY 5.3 open top gap,t-chain,port pump,ls9 gskts,head studs
LS2 intake with tbc 92tb
MSD Atomic LS EFI
76mm On3/ .96 ar hotside
Tick Turbo cam 217/227 638/627 114+4
FIC 80lb bosch injectors
ZR1 map sensor
799s with Tick 660 spring kit
5/16-3/8-5/16 tapered pushrods
Fabbed log manifolds v-bands
66mm Precision WG / Tial 50mmQ bov
14x30x3 intercooler

Transmission 4L80e
MSD Atomic TCU
Billet fwd hub,
6/6/4 clutches
usual roller mods on fwd/output
Jakes D3 transbrake

66Chevellelq4

I didnt know the word budget and msd atomic efi could be put into the same sentence lol

LT1PWRD

iTrader: (2)

Yeah, your right. Neither does budget and turbo, haha.
Except when Denmah does it.....

NOPELOL

I have a very similar setup to yours. I am having trouble finding any info on the atomic efi ls system. How do you like it so far? Things I was concerned about was, not being able to timing under boost, and the 2 BAR MAF sensor limiting me to 14psi.