Wyoming 2012 1500 LMG ENGINE FLEXIBLE FUEL, (GAS/ALC), 8 CYL, 5.3L, SFI, V8 OHV, CYL DEACTIVATION, IRON, GM 5.3-0 FLEX FUEL W/CYL DEACTIVATION(LMG)

LS based GM small-block engine - 5.3L wikipedia.org/wiki/LS_based_GM_small

The Generation IV 5.3L engines share all the improvements and refinements found in other Generation IV engines. 8 versions of the Gen IV 5.3L engine were produced: 3 iron blocks (LY5, LMG, and LMF) and 5 aluminum blocks (LH6, LH8, LH9, LC9, and LS4). All versions featured Active Fuel Management except for the LH8, LH9 and LMF.

The Vortec 5300, or LM7/L59/LM4, is a V8 truck engine. It is a longer-stroked (by 9 mm (0.35 in)) version of the Vortec 4800 and replaced the L31. L59 denoted a flexible fuel version of the standard fuel LM7 engine. Displacement is 5.3 L (5,328 cc (325.1 cu in)) from 3.78-inch (96 mm) bore and 3.622-inch (92.0 mm) stroke. Vortec 5300s are built in St. Catharines, Ontario and Romulus, Michigan. Another engine variant, the L33, shares the same displacement, but has an aluminum block with cast in cylinder liners, much like the LS1.

LMG

The Vortec 5300 LMG (VIN code “0”) is the flexible-fuel version of the LY5. Power and torque ratings for SUV and pickup truck applications are the same as each application’s LY5 rating. Variable valve timing was added for the 2010 model year.

        LMG applications: 
        
        2007–2013 Chevrolet Silverado 1500
        2007–2013 GMC Sierra 1500
        

Sat Jul 28 2018

        search criteria
        2004-2010 Toyota Tundra double cab or access prefer double cab esp. 2005,2006
        silverado/sierra 1500 2002-2007 2007 classic
        Avoiding 2008+ silverado/sierra 1500 for now
        silverado/sierra 2500 2002-2007 2007 classic
        silverado/sierra 2500 2007-2012 2007 non-classic
        

Tundra

T-Rex266 links on Tundra 2003 2005 2006 tundras.com/threads/hello

jberry813 response tundras.com/threads/hello

Depending on your needs:

2004 is the first year they came out with the double cab and changed the front brakes to the larger 13WL calipers/pads to help prevent rotors from warping

2005-2006 are the only years that came with VVT-i with the 2uz engine as well as a 5 speed auto instead of a 4 speed.

Other than that pretty much all the changes they made to the first gens were cosmetic.

2007 was the first year of the second gens.

Vortec 4.8L V8

Vortec 4800 LY2 (VIN code "C") is a Generation IV small block V8 truck engine wikipedia.org/wiki/LS_based_GM

The Vortec 4800 LY2 (VIN code “C”) is a Generation IV small block V8 truck engine. Like its LR4 predecessor, it gets its displacement from a 96.01 mm (3.780 in) bore and 83 mm (3.268 in) stroke. The smallest member of the Generation IV engine family, it is unique in that it is the only member of that family that is used in trucks that does not feature variable valve timing. It has a cast iron block. Power output is 260–295 hp (194–220 kW) and torque is 295–305 lb⋅ft (400–414 N⋅m).

LY2 applications:

        2008–2009 Chevrolet Express/GMC Savana
        2007–2009 Chevrolet Silverado
        2007–2009 Chevrolet Tahoe
        2007–2009 GMC Sierra
        2007–2009 GMC Yukon