Chevy revealed its largest crate engine yet at SEMA—the 776hp LSX454R.
A cast iron block is crowned with 6-bolt LSX aluminum heads which together with forged aluminum pistons help deliver a compression ratio of 13.1:1. Torque tops out at 649 foot pounds. Just be sure to fill it up with a minimum of 110 octane. (More info below).
Chevy brought nearly 30 crate engines to SEMA, including the Duramax diesel engine block which for the first time will be listed in the Chevrolet Performance catalog.
Based on the Duramax block used with the 2010-2017 LML/LGH production engines, two brand-new block configurations will be offered in the 2018 catalog: one for 2010-17 LML- and LGH-code engines and one for earlier versions of the Duramax, with engine codes LB7, LLY, LBZ and LMM. The LML/LGH version, part number 12651877, is available for immediate sale. The earlier, LB7/LLY/LBZ/LMM-code block, goes on sale in 2018.
The new L96 crate engine was also on display alongside an expansion of the Connect & Cruise lineup with the supercharged LT4 crate engine.
Based on the production engine used in 2010 and newer Chevrolet HD vehicles, the L96 6.0L crate engine is engineered for torque, delivering 380 lb.-ft. at 4,200 rpm.
The L96 crate engine kit includes the engine assembly with a production intake manifold, throttle body assembly, ignition coils, water pump, balancer, exhaust manifolds and more. Chevrolet Performance also offers other components required to finish off the engine and get it running, including front-end accessory drive systems and an engine controller kit.