Differences in the LM7 over the years - The 1947 - Present Chevrolet & GMC Truck Message Board Network

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Differences in the LM7 over the years

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08-18-2014, 01:13 PM	#1
69gmcc10 Registered User Join Date: May 2011 Location: Missoula, MT Posts: 934	Differences in the LM7 over the years I was doing some research for 5.3L and noticed that from 99 to 07 there are 3 different power ratings for these engines and I was wondering if anyone could shed some light on why. Were there mechanical changes that made the improvements or was it a computer tune upgrade? Thanks __________________ 69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582 Last edited by 69gmcc10; 08-18-2014 at 02:52 PM.

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