FLOW TO GO!
Diesel World|July 2020
FIGHTING HEAT AND AIR RESTRICTIONS WITH PPE’S LLY MOUTHPIECE ON AN ‘04.5 CHEVROLET
JASON SANDS
FLOW TO GO!

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 8,500+ magazines and newspapers.