How Much Power???
Thread Starter
Teching In
Joined: Nov 2013
Posts: 26
Likes: 0
From: East Texas
How Much Power??? Like all first time turbo ls builders I'm curious what the masses think of my combination (power wise). What better place to find out than ls1tech. I'm still a few months away from completion (lets see a few is 3) scratch that some months away but here goes with what I'm building.
Vehicle: '85 c10 swb - pump gas
Engine: '06 5.3l truck engine
Modifications to engine: Rings gapped to .26 & .28, ls6 valve springs, new oil
pump other than that stock ??? miles.
Ignition: MSD control box with factory coils
Fuel delivery: Fuel cell, Bosch 044 pump, -8 lines, Aeromotive regulator,
Victor Jr. intake, CSU 750 blow thru carb.
Induction: Twin CXRacing T4 GT35 turbos, Godspeed twin intercooler,
twin 44 gates, flipped manifolds, spectre carb hat.
Drivetrain: Ptc spec converter, TH400 trans, 3.42 gears with a spool, 28 or
29" tires.
Boost & Timing: Looking for 12-14lbs at 13 to 14 on timing.
I know stock builds have been done before and I may have not have done the best job of searching but this is what I have. I can't take many recommendations as most of this has been bought but please feel free to give your opinions. Thanks.
Vehicle: '85 c10 swb - pump gas
Engine: '06 5.3l truck engine
Modifications to engine: Rings gapped to .26 & .28, ls6 valve springs, new oil
pump other than that stock ??? miles.
Ignition: MSD control box with factory coils
Fuel delivery: Fuel cell, Bosch 044 pump, -8 lines, Aeromotive regulator,
Victor Jr. intake, CSU 750 blow thru carb.
Induction: Twin CXRacing T4 GT35 turbos, Godspeed twin intercooler,
twin 44 gates, flipped manifolds, spectre carb hat.
Drivetrain: Ptc spec converter, TH400 trans, 3.42 gears with a spool, 28 or
29" tires.
Boost & Timing: Looking for 12-14lbs at 13 to 14 on timing.
I know stock builds have been done before and I may have not have done the best job of searching but this is what I have. I can't take many recommendations as most of this has been bought but please feel free to give your opinions. Thanks.
Thread Starter
Teching In
Joined: Nov 2013
Posts: 26
Likes: 0
From: East Texas
Thanks for the reply, I just figured there would be some real world examples or even some thoughts on my combo. I would post this in a truck forum but nobody has built more ls turbo engines than the people on this sight.
TECH Fanatic
Joined: Mar 2011
Posts: 1,916
Likes: 8
From: Statesville, NC
Stock cam? I'd say 600ish being it's twins. Just a guess. Like stated above it usually takes close to 15 psi to double your na power which would probably be low 300 range thru auto on yours. 15 psi being in low to mid 600s. Maybe. Had a ta long time ago with basically same cam spec I used in my boost ta I got now. Na is about 400 rwhp thru t56. 16psi made 775 rwhp with single s475 on a otherwise stock ls1. So that saying is true or close for most setups.
Thread Starter
Teching In
Joined: Nov 2013
Posts: 26
Likes: 0
From: East Texas
Yes stock cam. I'm saving the good parts for the other 5.3l I have sitting in the corner. Just throwing this combo together to learn what I did right, what I did wrong. What works and what doesn't. Thanks for the reply.
TECH Fanatic
Joined: Mar 2011
Posts: 1,916
Likes: 8
From: Statesville, NC
I also have twins going on a 5.3 block. But gonna be more like 30psi lol.
Trending Topics
probably 550whp and some serious tq i believe those are on the smaller end of turbos should spool fast and make tons of tq
try to keep the tuneup mild down low if you can with timing might bend some rods, i made 800+ftlbs at like 3000rpm with a twin gt35 kit (60mm turbos i believe mine were)
try to keep the tuneup mild down low if you can with timing might bend some rods, i made 800+ftlbs at like 3000rpm with a twin gt35 kit (60mm turbos i believe mine were)
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Thread Starter
Teching In
Joined: Nov 2013
Posts: 26
Likes: 0
From: East Texas
I like those numbers Denmah. I guess I should have included some turbo specs.
Brand : CXRacing GT35 T4
Air Inlet : 4"
Compressed air outlet : 2.5"
Exhaust outlet : 3"
Compressor : .70 A/R
Turbine : .68 A/R
Compressor Wheel : 61.3/82mm
Turbine Wheel : 62/67.8mm
Brand : CXRacing GT35 T4
Air Inlet : 4"
Compressed air outlet : 2.5"
Exhaust outlet : 3"
Compressor : .70 A/R
Turbine : .68 A/R
Compressor Wheel : 61.3/82mm
Turbine Wheel : 62/67.8mm
