Links for Discussion + 2004

HEUI - How High-Pressure Oil Injection Systems Work - Diesel Power Magazine
For those of you who haven’t spent much time around the Power Stroke name, the first 14 years of its production (the 7.3L and 6.0L) utilized a hydraulically activated, electronically controlled, unit injector (HEUI) fuel system. While this ...more
Type: Discussion
Year: 1994, 1995, 1996 ... 2005, 2006, 2007
Engine: Ford 7.3L V8

Diesel Place : Chevrolet and GMC Diesel Truck Forums
Detailed comparison of the mouthpieces (intake tube) for the LLY and LBZ duramaxes, with an aftermarket version from Kodiak as well.
Type: Discussion Attributes: Upgrade/Aftermarket Tech Topic: Engine
Year: 2004, 2005, 2006, 2007
Make/Model: Chevrolet 2500HD Engine: GM 6.6L V8

6.0 Powerstroke towing turbo failures
Thoughts on over- and under-boosted 6.0Ls, including the importance of addressing any oil-cooler related problems quickly. The first sign is the oil temperature exceeding the coolant temperature by 15F.
Type: Discussion Tech Topic: Engine
Year: 2003, 2004, 2005, 2006, 2007
Make/Model: Ford F250, F350, F350DRW Engine: Ford 6.0L V8

GM 6spd vs 4spd Tranny Chart
GM owners discuss towing with the 4L80e 4 speed automatic versus the new 6 speed. Some comments deal with towing with older GM automatics (TH400) that have a very high first gear (2.48:1). Includes a comparison spreadsheet showing the differences.
Type: Discussion Attributes: Numbers Tech Topic: Towing & hauling
Year: 1991, 1992, 1993 ... 2009, 2010, 2011
Make/Model: Chevrolet 1500, 2500HD, 3500, 3500DRW Engine: GM 5.3L V8, 6.0L V8

LLY mouth piece???? - Chevy and GMC Duramax Diesel Forum
Overheating LLY Duramax engine on a 2004-2005 pickup? This modification to the intake appears to fix it. Lots of discussion from users who have done it, or sent the mouthpiece to a vendor to do.
Type: Discussion Tech Topic: Engine
Year: 2004, 2005
Make/Model: Chevrolet 2500HD, 3500, 3500DRW Engine: GM 6.6L V8