Another general ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Nima** · 07-15-2005, 05:36 PM

Hi every body:
Can anybody tell me the difference between LB7 and LLy duramx diesel? I know chevy changed to LLY on Jan 2004, but what are the changes as far as performnace and durability goes?
Thanks.

Rooster's 67 · 07-16-2005, 01:28 AM

LB7 engines usually will get better milage than the later LLy motor that makes more horsepower and torque,why do you ask,,,, purchasing one?

68C15 · 07-16-2005, 05:22 PM

did they move the injectors so you only scrape 8 knuckles replacing them? different injectors that cost more than $500 each?

07-15-2005, 05:36 PM	#1
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	Another general ?? Hi every body: Can anybody tell me the difference between LB7 and LLy duramx diesel? I know chevy changed to LLY on Jan 2004, but what are the changes as far as performnace and durability goes? Thanks.

07-16-2005, 05:22 PM	#3
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	did they move the injectors so you only scrape 8 knuckles replacing them? different injectors that cost more than $500 each? __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card Last edited by 68C15; 07-16-2005 at 05:24 PM. Reason: yard work is not easy, but well worth it in the end.

07-16-2005, 01:28 AM	#2
Rooster's 67 Registered User Join Date: Sep 2003 Location: DFW Posts: 765	LB7 engines usually will get better milage than the later LLy motor that makes more horsepower and torque,why do you ask,,,, purchasing one?



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