When it comes to GM pickups, there isn’t a better engine option than the 6.6L Duramax diesel. Introduced in ‘01, the Duramax was practically a Formula One engine in its time, with revolutionary aluminum heads and common-rail injection. There were a few shortcomings however, and it’s those issues that we’ll be addressing in our testbed 120,000-mile ‘04.5 Cheverolet 2500 HD.
New for the 2004 half-year was a VGT turbo, which flowed more than the previous LB7 turbo, and also had variable vanes, which allowed for the new LLY engine to spool up much quicker than the previous LB7. Just like many changes, however, there were shortcomings to this new design. Thankfully though, they’re pretty easy to fix!
THE BAD
This story is from the July 2020 edition of Diesel World.
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This story is from the July 2020 edition of Diesel World.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
SEEING 2020
EMISSIONS FRIENDLY UPGRADES FOR THE 2020 DURAMAX
WHY THE CP4.2 FAILS
AND HOW YOU CAN KEEP YOURS OFF THE SCRAP PILE
FLASHBACK! SEMA 2018
THE MEGA TRUCKS ARE HERE!
LOOKS, SOUNDS, AND RUNS LIKE A DEERE
AN 800HP LBZ DURAMAX BUILT TO DO ONE THING— AND ONE THING ONLY
LITTLE ORANGE
1961 ALLIS-CHALMERS D-15 SERIES I
THE GAME CHANGER
INSIDE DHD’S RECORD-SETTING DURAMAX
DINOSAURS AREN'T EXTINCT
BRIAN JELICH’S TRAILBLAZING, 5.90 INDEX-RACING 7.3L POWER STROKE
FAMILY FARM TRUCK
JEREMY SCHMIDT’S 1948 CUMMINS-POWERED CHEVROLET LOADMASTER
BLACK HOLE CUMMINS
1964 CUMMINS VT12-825-M
KNOW YOUR 6.0L
THE KEY DIFFERENCES BETWEEN EARLY AND LATE MODEL ’03-’07 POWER STROKES
