2004.5-2005 GM 6.6L LLY Duramax

This is our lly-lmm Duramax 68mm wheel and cover kit. What's included

High flow 6x6 billet 68mm compressor wheel

Polished 68mm compressor housing 

Full rebuild kit including 360-degree steel thrust

Your option of a 9 blade lly 66mm turbine wheel or a 10 blade lly turbine wheel 

Fully balanced rotation assembly (the compressor and turbine will come put together because we balance as an assembly)

We sell a lot of the DIY kits and to answer some common questions we get. If you plan on towing do not choose the 9 blade option, please choose the 10. If you still aren't sure please call and we can build a kit or direct you to another kit we have that would be better suited for you truck and what you do with it. We have seen over 700hp with these kits obviously with larger injectors and pump/s. These turbine wheels will only fit in LLY turbine housings so if you have an lbz or lmm you will need a lly turbo or a lly turbine housing and vanes.

This is our 73.5/71mm 10 blade high flow turbine. This is a gt40-gt42 clipped turbine. Same shaft size as gt37 so the journal bearings will fit. The inducer is clipped down to 73.5 to fit in LLY and 03-04 6.0 power stroke and not interfere with the vanes This is the turbine we use on our high performance 68 and 71mm Duramax and power stroke drop in turbos. These are 800hp + capable turbines. Turbine housing machining is required this is not drop in replacement. This turbine is for 15mm vanes so lly Duramax and 03-04 6.0 power stroke turbine housings only. We can machine your housing for $200 if you don't have the ability. These are extremely well built and strong turbines. They are tried and true.

THIS IS ONE IF NOT THE BEST REBUILD KIT AVAILABLE. Please dont buy the rebuild kits with the brass thrust bearings they are far weaker than steel. The steel thrust is extremely strong and most all factory vgt turbos (lly-lbz) come with 270 degree steel thrust, why would you put a weaker brass thrust bearing in than what factory uses? These have been tried and true, we use these on all our base line drop in turbo builds for the past 10 years and they simply work. We mic every part of the kits before they ship to ensure they are perfectly within spec.
Fitment:

04.5-07 6.6L Chevy GMC LLY LBZ Duramax with Garrett GT3788VA Through-Bore Compressor Wheel Turbocharger.

Duramax Engine VIN ID

The 8th digit of the VIN identifies your Duramax engine code:

01-04 LB7 - 1  
04.5-05 LLY - 2  
06-07 LBZ - D  
07.5-10 LMM - 6  
11-16 LML - 8  
11-16 LGH - L  
16-18 L5P - Y  

GT3788VA Turbo Rebuild Kit Contents

360 steel Thrust Bearing and Collar, high flow Journal Bearings, Step Gap Oil Seals, Compressor Housing Inner and Outer Seals, 11 Compressor Housing Bolts, VGT Actuator Rod Cap O-rings and Snap Rings, 5 VGT Solenoid O-Rings.

Features

- Improved longevity in high-boost applications,  
- STEEL 360 Thrust Bearing: Brass does not take the axial thrust load that steel does it is far superior please do not fall for the lack of knowledge on ebay of people/companies selling brass vs. steel. Improved lubrication with 6 oil passages vs. OEM 270 style thrust bearings with 5 oil passages.  

- Step Gap Oil Seal

Important Note

Warranties do not cover improper practices. Change your oil feed line oil filter and oil along with your air filter before driving the truck. 

Does not include instructions.  

These are our high flow vanes we use in our custom Duramax turbo builds. These are tried and true and are the highest quality. If your looking for more flow and want to make the most power possible from your turbo these are it.

9 Blade Turbine Wheel & Shaft. Measures 72.5mm x 66.5 mm.

• Drop in turbine wheel for LLY duramax
• More top end flow with a slight increase in lag when vs the 10 blade turbine wheels
• sounds like a jet(extremely loud)

Fits:
2004.5-2005 LLY 6.6l Duramax Turbochargers please make sure your turbine housing has a M3 casting number on it if it says m48 this turbine will not fit and you have a lbz turbo