GM 5.3 vs 6.2: What's the Difference?

The GM 5.3L truck V8 and the GM 6.2L truck V8 differ in displacement, bore × stroke, compression ratio, factory rating. The table puts the factory specs side by side; each engine's own page has the full specs.

Specs side by side

GM 5.3L truck V8GM 6.2L truck V8
EngineGM 5.3L truck V8 (Gen IV LY5/LH6/LMG/LC9; Gen V L83/L84/L82)GM 6.2L truck V8 (Gen IV L92/L9H/L94; Gen V L86/L87)
Displacement325.2 ci (5.33 L)376.1 ci (6.16 L)
Bore × stroke3.780" × 3.622"4.065" × 3.622"
Cylinders88
Compression ratio9.5:1–11:110.4:1–11.5:1
Factory rating270 hp–355 hp380 hp–495 hp
Blockaluminum or cast ironaluminum
Headsaluminumaluminum
Rod length6.098"6.098"
Deck height9.240"9.240"
Weight (approx.)——
Fuelgasgas
Model years1999–20262007–2026

Where versions of an engine differ, the table shows the range across them. Ratings are the makers' published figures.

Other differences

GM 5.3L truck V8GM 6.2L truck V8
Cylinder deactivation (Gen V)L83 (2014-18): AFM (V8/V4); L84 (2019+ new trucks): Dynamic Fuel ManagementL86 (2014-18): AFM; L87 (2019+): Dynamic Fuel Management, 17 cylinder patterns
Factory recall (Gen V 6.2)--NHTSA 25V-274: 2021-2024 Escalade/ESV, Silverado 1500, Suburban, Tahoe, Sierra 1500, Yukon/XL with the 6.2L V8 gas engine - connecting rod and/or crankshaft defect

Which cars got each engine

GM 5.3L truck V8Years
Buick Rainier2004–2007
Chevrolet TrailBlazer2003–2008
GMC Envoy2003–2009
Chevrolet Silverado 15001999–2026
GMC Sierra 15001999–2026
Chevrolet SSR2003–2004
Chevrolet Silverado HD1999–2000
GMC Sierra HD1999–2000
Chevrolet Suburban2000–2026
Chevrolet Tahoe2000–2026
GMC Yukon2000–2026
Cadillac Escalade2002–2005
Chevrolet Avalanche2002–2013
Chevrolet Chevy Van / Express2003–2014
GMC Vandura / Savana2003–2014
Hummer H32008–2010
Chevrolet Colorado2009–2012
GMC Canyon2009–2012
GM 6.2L truck V8Years
Cadillac Escalade2007–2026
GMC Sierra 15002007–2026
GMC Yukon2007–2026
Chevrolet Tahoe2008–2026
Hummer H22008–2009
Chevrolet Silverado 15002009–2026
Chevrolet Suburban2019–2026
Chevrolet Corvette2014–2026
Chevrolet Camaro2016–2024

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