LS1 vs LS2: What's the Difference?

The GM LS1 5.7L and the GM LS2 6.0L 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 LS1 5.7L	GM LS2 6.0L
Engine	GM LS1 5.7L	GM LS2 6.0L
Displacement	346.1 ci (5.67 L)	364.1 ci (5.97 L)
Bore × stroke	3.900" × 3.622"	4.000" × 3.622"
Cylinders	8	8
Compression ratio	10.1:1	10.9:1
Factory rating	305 hp–350 hp	390 hp–400 hp
Block	aluminum	aluminum
Heads	aluminum	aluminum
Rod length	6.098"	6.098"
Deck height	9.240"	9.240"
Weight (approx.)	425 lb–460 lb	—
Fuel	gas	gas
Model years	1997–2004	2005–2009

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 LS1 5.7L	Years
Chevrolet Corvette	1997–2004
Chevrolet Camaro	1998–2002
Pontiac Firebird	1998–2002
Pontiac GTO	2004

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

More

• GM LS1 5.7L specs
• GM LS2 6.0L specs
• All engine comparisons