2009 Pontiac G8 GXP Power Bumped to 415hp/415ftlbs
The 2009 Pontiac G8 GXP performance sedan is done going through the SAE J1349 dyno testing, giving it its official horse power of 415hp, up from the 400 estimates when the car was first shown at the New York International Auto Show. Torque also gets a bump to 415. The G8 GXP will use a larger dispalcement 6.2 LS3 V8 engine from the Corvette, and yes race fans...a six speed manual transmission will be available for the GXP model along with the standard six speed auto trans. The LS3 is the third engine available for the G8 line up starting with the 261hp 3.6 V6 engine, a 360hp 6.0 V8 engine equiped with the gas-saving Active Fuel Management system.
415hp/309kw @ 5900rpm
415ftlbs/563Nm @ 4600rpm
SAE1349 Dyno Graph below
http://media.gm.com/us/powertrain/en/product_services/2009/HPT Library/Gen IV/Gen IV Car/2009_62L_LS3_ Pontiac_G8_GXP_n.pdf
Thank You to B4Z for finding this dyno graph!
GMI Preview of the 2009 Pontiac G8 GXP from NYIAS