Chevrolet Performance | LT5 Crate Engine

Unleash 755 Horsepower

The power behind the 2019 Corvette ZR1 is now available from Chevrolet Performance in the new LT5 crate engine – the most powerful production engine ever crafted from Chevrolet.

The LT5 crate available to customers is essentially the same one under the hood of the 2019 Corvette ZR1.

It is capable of 755 horsepower and 715 lb-ft of torque, while a new, more-efficient supercharger on the LT5 maintains the same four-lobe design as the LS9 and LT4. However, it is much larger. The Eaton component checks in at 2.65 liters of displacement, making it 64 percent larger than the LT4’s 1.7-liter compressor and creates more boost.

To support all that extra air flowing into the engine, the LT5 also has a unique dual-fueling system. An extra set of port fuel injectors complements the standard direct-injection system, meaning a whopping 16 injectors in total provide the fuel. Usually the engine will operate solely on direct injection, while the port injectors supplement the direct-injection system under heavier fuel loads – like when the engine is at wide-open throttle. The engine also features the largest throttle body (95mm) ever on an LS or LT engine, camshaft phasing, an electronically controlled bypass for the supercharger, and unique rod and main bearings.

Bill Martens, Chevrolet’s Associate Marketing Manager, walks us through details of the Chevrolet Performance LT5 Crate Engine in this video:

Video | Chevrolet Performance – LT5 Crate Engine – Information & Specs

LT5 Tech Specs

Part Number: 1941417105
Bore x Stroke (in.): 4.06 x 3.62
Compression Ratio: 10:1
Crankshaft: Forged steel
Piston: Forged aluminum with polymer-coated skirts
Cylinder Heads: Rotocast A356T6 aluminum
Valve Size (in.): 2.13 titanium (intake) and 1.590 sodium-filled (exhaust)
Supercharger: R2650 (2.65L)
Supercharger Drive: 11-rib belt
Max Boost: 14 psi
Throttle Body: 95mm diameter
Fuel System: Direct injection (primary) with port injection (supplementary)
Claimed Horsepower: 755 @ 6400 rpm
Claimed Torque: (lb.-ft) 715 @ 3600 rpm