LS2 vs LS3: What's the Difference?

The GM LS2 6.0L and the GM LS3 6.2L 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 LS2 6.0L	GM LS3 6.2L
Engine	GM LS2 6.0L	GM LS3 6.2L
Displacement	364.1 ci (5.97 L)	376.1 ci (6.16 L)
Bore × stroke	4.000" × 3.622"	4.065" × 3.622"
Cylinders	8	8
Compression ratio	10.9:1	10.7:1
Factory rating	390 hp–400 hp	415 hp–430 hp
Block	aluminum	aluminum
Heads	aluminum	aluminum
Rod length	6.098"	6.098"
Deck height	9.240"	9.240"
Weight (approx.)	—	—
Fuel	gas	gas
Model years	2005–2009	2008–2017

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

Which cars got each engine

GM LS2 6.0L	Years
Chevrolet Corvette	2005–2007
Chevrolet SSR	2005–2006
Pontiac GTO	2005–2006
Cadillac CTS	2006–2007
Chevrolet TrailBlazer	2006–2009

GM LS3 6.2L	Years
Chevrolet Corvette	2008–2013
Pontiac G8	2009
Chevrolet Camaro	2010–2015
Chevrolet SS	2014–2017

More

• GM LS2 6.0L specs
• GM LS3 6.2L specs
• All engine comparisons