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Old 01-06-2014, 07:50 PM   #1
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03 turbo build.

Hey guys new here, been checking this site out and never knew it existed and it's a bad *** site. Ok I have some questions, I have an 03 that I've been buying parts for building a front mount turbo setup on, but I've had a lot of health, work, and family related set backs that have held me from doing any building. Currently the truck has;
•Inertia 214/218 114lsa cam
•P&P milled performance heads
•Pro billet edge 3400 converter
•flexalite efan
•pacesetter long tubes
•03 trany mods line booster/tmr
-Best 1/4 of [email protected]


Ill give you a list of things I've acquired over the past year
•Two turbos GT4202 1.28 a/r hot side and a PT80 .96a/r
•Precision wastegate 66mm 7.2 psi spring
•Tial 50mm BOV
•Treadstone vertical flow intercooler
•4" Borla XR-1 muffler
•4.10 gears
•Cal-tracs
•4l80e still deciding on programmer
•B&M Stealth Pro shifter for ^
•Building all my own manifolds and intercooler piping

•I'm on a stock bottom end and I'm looking to run 7psi(w/g spring), what injectors should I run?
•should I upgrade anything else in my fuel system(I'd like to run E-85)?
•Tuning.... once I build my other engine ill be running a 230's duration cam cam, and have the 4l80e transmission, should I convert to a manual 05's pcm?(ive heard the iEMS-3 dosnt do well with big cams...
Any input from you all is highly welcome & needed!! I will be posting pics soon!

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Old 01-06-2014, 08:26 PM   #2
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If your running the 4l80e having the PCM flashed to a manual is the trick allows the eng to run fine with the manualy shifted trans (Otneil) has done it running a t56 in his truck had it flashed like you want to

The turbo manifold will likely have to be made like "ghost03hemi" is out of schedule 40 so it doesn't crack like his has a few times

Srt4 injectors should cut it on 93oct or a set of 03/04 cobra injectors on e85 I use 03/04 cobra injectors on my 392 s/c 10psi setup so they should be good for e85 on a stock 5.7 at 7psi

As for fuel pump a minimum of a 255 for safety on 93 oct and a walbro 400lph if you wanted to run e85 since you will need alot more fuel
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Old 01-06-2014, 08:39 PM   #3
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Quote:
Originally Posted by charged392 View Post
If your running the 4l80e having the PCM flashed to a manual is the trick allows the eng to run fine with the manualy shifted trans (Otneil) has done it running a t56 in his truck had it flashed like you want to
I'm an 03 I either will run a 03 manual tcm and tune with iEMS3 or convert my truck to a manual 05 pcm just really wondering which will be better for my tuning the tranny isn't the big deal.
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Old 01-06-2014, 08:41 PM   #4
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Quote:
Originally Posted by BoostedSport View Post
•Tuning.... should I convert to a manual 05's pcm?
The tune is the most important. Without it, you wont be able to boost up............ Convert over to an 05 pcm before attempting any boosting. There's allot of problems with the 03 pcm.
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Old 01-06-2014, 08:43 PM   #5
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Originally Posted by Ghost03hemi View Post
The tune is the most important. Without it, you wont be able to boost up............ Convert over to an 05 pcm before attempting any boosting. There's allot of problems with the 03 pcm.
Any ideas what all I need or a link? I've searched it and nothing comes up
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Old 01-06-2014, 08:53 PM   #6
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Quote:
Originally Posted by charged392 View Post
The turbo manifold will likely have to be made like "ghost03hemi" is out of schedule 40 so it doesn't crack like his has a few times.
Not necessarily Keith. I used thin s/s tubing with regular exhaust tubing and a mig welder on my first manifold. Big mistake on my part. Especially on a turbo manifold. It's was all I could afford at the time. Anyone that can weld better than me will be able to build a tube type turbo manifold.
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Old 01-06-2014, 09:04 PM   #7
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Originally Posted by Ghost03hemi View Post
The tune is the most important. Without it, you wont be able to boost up............ Convert over to an 05 pcm before attempting any boosting. There's allot of problems with the 03 pcm.
I cannot find a helpful article for an 05 PCM swap anywhere… its like Bigfoot lol.
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Old 01-06-2014, 09:06 PM   #8
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Originally Posted by charged392 View Post
stock 5.7 at 7psi
Recommend water/meth injection with stock ring gaps and pistons........
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Old 01-06-2014, 09:16 PM   #9
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Recommend water/meth injection with stock ring gaps and pistons........
I run ngk4306 and any specific meth kit that is better than the others?
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Old 01-06-2014, 09:21 PM   #10
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Stage II, Snow Performance water/meth kit.
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