First off, I own A 2002 RCSB 2wd truck 5.3l Flex Fuel. I bought it strictly to turbo. Its a "stripper" so the only 2 options. it has is a tow package and A/C.

I want a street driven track ready truck, more of a freeway warrior. with as much power the truck can handle without going too crazy on body modifications. stock rear etc.

I own and operate a business called Nocturnal Performance were we build Lsx swaps for older hotrods, muscle cars, boats and so on. therefore I have tons of parts and engines laying around.

Here is what I have sitting I'm my shop that can be used on this project.

Trick stage 3 turbo kit with 76mm master power .96AR

50mm BOV

38mm WG

80lbs Siemens injectors

Engine choices

2010 L96 engine complete. (I can change it to run of an 99-02 computer and wiring harness.)

2003 6.0l lq4 stock

2002 5.3l disassembled for machine shop with a set of scat forged h beam rods and wiesco flat top nitrous pistons. these would change the 5.3l to the size of an LS1

or turbo the stock 5.3l thats in the truck

I have both 4l60E and 4l80e in 2wd both stock. I'm really leaning towards the 4l80e. its an easy swap

I want to keep the flex fuel option because I have heard of what a difference it makes on boost. can I keep the module when changing to a bigger better fuel system?

This will be my first attempt at building a turbo car. I have been lurcking here for a few years and understand the theory pretty well. I want to play around and learn a lot before a customer asks me to build them a turbo car.

what would you guys suggest I do? I also want to cam what ever engine I decide to use. any cam suggestions?

 

Turbo the 5.3 and let it eat!

 

i agree turbo the 5.3 but those 80's are ganna be to much unless you cam it. mine was bone stock with 80's and was dumping to much no matter how much we tuned it down

 

imo i would do 6.0 /2003 for two reason more torque / and the 4l80e has 2.41 first gear .4l60e has 3.06 first but wont last .the 5.3 will struggle with that 2.41 first gear .been there done that . i am runnig 03 6.0 with 4l80 e now ,trick stage 3 as rick about me .

 

X2 on the 6.0 with the 4l80e. Run flex fuel and year it up!

 

Why the 03 6.0l over the 2010 6.0 with L92 heads?

 

Turbo them all. .

 

L96 and 80e....that turbo will be done before the injectors. "Flex fuel" is meaningless at the power you want