When did the GM LS2 engine come out?
The engine specs and information listed here is for the stock LS2 used in GM passenger cars from 2005-2007. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love.
What kind of engine is in a Pontiac GTO?
LS2 engine in a 2005 Pontiac GTO. (Image/Super Chevy) Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love.
What’s the difference between the LS1 and LS2 engines?
Unlike the LS1 engine upon which it is based, the LS2 is classified as the starting point for the newer Gen IV small block family, though, the Gen III and Gen IV engines share many similarities, and have many interchangeable parts.
What are the dimensions of a GM LS2?
Cylinder Block: the LS2 cylinder block shares two key design elements with GM’s original small-block V8: a 90-degree cylinder angle and 4.400-inch bore centers. The bore and stroke dimensions are: 4.00-inch (101.6 mm) bore x 3.62-inch (92 mm) stroke, which gives the LS2 a 0.3L increase in displacement.
Why was the General Motors LS2 engine introduced?
The LS2 introduction marked the introduction of the General Motors Gen IV short-block V8 series. This platform allowed for more power and the addition of other improvements such as active fuel management.
When did the corvette LS2 engine come out?
The LS2 was first offered in 2005 to customers as the base model for the Corvette, Chevrolet SSR and Pontiac GTO, in addition to some models offered only outside of North America. The LS2 was then also offered in 2006 in the Chevrolet Trailblazer SS and the Cadillac CTS-V series. In 2008 the Saab 9-7x Aero also added the LS2 option.
How big is the intake on a GM LS2?
Though, the LS2 gets a further compression ratio bump, now up to 10.9:1 Steel intake and exhaust valves are used in the aluminum alloy heads, and they measure 2.00-inch (50.8mm) intake and 1.575-inch (40.5mm) in diameter.
How many valves does a LS2 engine have?
The valve architecture uses 2 valves, 1 intake and 1 exhaust per cylinder. The LS2 introduction marked the introduction of the General Motors Gen IV short-block V8 series. This platform allowed for more power and the addition of other improvements such as active fuel management.