Duramax Diesels Forum Truck of the Week
Old 08-27-2017, 11:34 AM
Flying Fridge's Avatar
Flying Fridge Flying Fridge is offline
Join Date: Aug 2017
Location: Sterling, Illinois
Posts: 20
Default Changing the mouthpiece to a LBZ

I have a 2006 LLY in my express van and want to change the LLY mouthpiece to the LBZ one. Has anyone done this swap on an Express van and was in noticeable? I was thinking of just using a stock GM unit instead of an aftermarket one.
2006 Chevrolet 3500 Series LLY Duramax Powered Express Van, 4L85 Transmission, 3.73 Rearend. Chrome doesn't make it any faster!
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Old 04-10-2018, 05:51 AM
Entropy Entropy is offline
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Old 04-10-2018, 07:40 AM
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06gmc 06gmc is offline
Loud and Heavy
Join Date: Jun 2017
Location: SWMO
Posts: 63


If it is a 2006 LLY it should have all the LBZ hard parts? unless a van is different?
2006 2500HD LLY Tuned by Idaho Rob SOLD!
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Old 04-10-2018, 08:22 AM
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ShopSpecialties ShopSpecialties is offline
Join Date: Jun 2008
Location: Grass Range, Montana
Posts: 89

The van has a totally different mouthpiece than the trucks and it does not need changing.
2006 Express 1 Ton Ext Dmax van. EFILive, Hella headlamps, Edge Insight CTS, TDK Bumper, TCI deep pan, B&M Super Cooler, Diamond Eye 4" Turbo Back - BYE BYE Kitty and ruffler, Synthetic front to back. Custom air intake with AEM dry filter, Kennedy lift pump, EGR cooler/valve delete.

Chad @ Alligator Performance
Jeremy @ Throttle Down Kustoms
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