Like football on Sunday afternoon or pumpkin pie, there's no such thing as too much when it comes to enginedisplacement. And with 345 horses and 380 lb.-ft. of torque, the 6.0-liter LQ9 V-8 makes the most of those cubicinches-like a two-point conversion or an un-guarded tub of whipped cream.

The LQ9 uses the proven LS architecture to provide robust performance in the Cadillac Escalade AWD. It features asturdy iron block, but like the aluminum-block versions, the LQ9 has a deep-skirt, six-bolt-main block, with structuraloil pan and other carefully engineered features to help make it a smooth running and strong engine. A special camshaftand tall intake manifold each are tuned to produce loads of useable torque across the entire rpm range.

GM Performance Parts delivers the LQ9 complete with the intake manifold, throttle body, fuel rail with injectors,balancer, exhaust manifolds, water pump and a flexplate for automatic transmissions. It comes with truck-style oil paninstalled. The LQ9 can be fitted to older vehicles, providing modern performance and unquestionable capability.