S2kstephen

I'm new to this site, but used a lot of information from here to complete my build.

This is my 2009 GMC 2500HD 6.0 truck, with a one-off LSA supercharger setup. Here goes the build...

Pre-owned, all stock, eye sore







This was with all OEM parts (minus the Ford fan). Injectors and fuel pump from other GM vehicles.

Ran at 3.5psi.

So we upgraded to a 9" lower pulley, custom Walbro 450, ID850, and a FPR.



Now we're running 10.5psi! Next up is a smaller upper pulley and an upgraded heat exchanger to hopefully get ~13psi.

The new power required an upgrade custom driveshaft. OEM is 0.625" thick new one is now .125". Both 5" diameter.

S2kstephen

Next up: upgrade heat exchanger and smaller upper pulley. Shooting for 12-13psi!

rwb

How much do you think you will get out of it??

S2kstephen

I'm hoping the increase of 2-3psi of boost will get me another 50-75hp.

I'm currently right around 600hp, but haven't found a local dyno that will fit the width of the truck to confirm.

Z28-4-Chris

iTrader: (2)

Why only 3.5 psi with stock parts? Run out of fuel?

S2kstephen

Not sure why only 3.5". My buddy and I both have the same setup and both only got that. Once the lower crank pulley was installed I really gained some power.

Floader

iTrader: (32)

what front drive setup did you use? Doesnt look like a factory LSA setup, if you used a 6-rib deal that would explain the 3.5lbs. In for more pics and info

S2kstephen

Here's the basic breakdown of parts originally:

LSA Supercharger Core
ZL1 Lid, IAT, 3-bar MAP
CTS-V Evap Solenoid on Snout
Modified LSA fuel rail, 7” line extension
Bosch LSA/LS9 injectors – 52lb/hr
Flex fuel pump
- W truck crank pulley, OEM SC pulley
- Lower Idler, Dayco 89097
- Belt – Dayco 5060885
- W Upgraded 9" Crank Pulley, OEM SC Pulley
- Lower idler, Dayco 89052
- Belt 5060890
OEM truck TB
Front-mount OEM Heat Exchanger
Bosch coolant pump, wired to activate with fuel pump circuit.
Custom-spec HD fan and fan clutch
4” cold air intake –
– 09+ use Spectre 4” housing and OEM MAF

Floader

iTrader: (32)

6 rib and the stock truck pulley is smaller OD than the factory LSA setup. Let us know if you have any belt slip issues when you switch to the smaller upper.

Cool setup, would love to see what it makes for numbers on a dyno

S2kstephen

I may have to find another belt when I upgrade the upper pulley.

I'd like to see #'s as well, just haven't found a dyno that will fit my truck.