GM 6.2 Liter Supercharged Small Block V8 LT5 Engine
The LT5 is an overhead valve (OHV) eight-cylinder, supercharged gasoline engine from General Motors. It is currently used exclusively in the Chevrolet C7 Corvette ZR1.
The engine is similar to the 6.2-liter LT4 V8 found in the C7 Corvette Z06 and sixth-gen Camaro ZL1, but with a larger supercharger, larger throttle body, stronger crankshaft and a new dual-fuel injection system. Another notable difference is the LT5’s lack of Active Fuel Management (AFM) technology.
|Displacement:||6.2L / 376 cu. in.|
|Vehicles:||Chevrolet C7 Corvette ZR1|
|Introduced:||2019 model year|
|Predecessor:||LS9/ Gen 4 Small Block|
The LT5 debuted with the 2019 Chevrolet Corvette ZR1, as the powerplant advanced the Corvette’s supercharging legacy, which began with the 2009 sixth-generation ZR1 and continued with the 2015 seventh-generation Z06. The LT5 still delivers the highest output ever for a Chevrolet production vehicle, thanks in part to a more-efficient supercharger system that offers 52 percent more displacement than the Z06’s LT4 supercharger. Since the unit is larger, it can produce more boost while spinning less, which means less heat under the hood. While the blower is intercooled, heat soak can still sap performance in harsh conditions.
GM’s first dual-fuel-injection system, which employs primary direct injection and supplemental port injection, also helps the LT5 achieve its record output of 755 horsepower and 715 pound-feet of torque, though the official Chevy Corvette intake added up 17 horsepower.
Prior to GM’s official announcement of the 2019 Corvette ZR1 and the LT5, we had the following information about the LT5.
- General Motors first filed for the LT5 trademark with the United States Patent and Trademark Office on April 2013 in the goods and services category as “engines for automobiles, sport utility vehicles, trucks and vans”.
- GM subsequently filed a second filing citing the same goods and services category in September 2016.
|Type:||6.2L Supercharged V-8|
|GM RPO Code:||LT5|
|Configuration & Cylinders:||V8|
|Vehicle Engine Orientation:||Longitudinal|
|Valve Configuration:||Overhead Valve (OHV)|
|Valves Per Cylinder:|
|Assembly Site:||GM Tonawanda plant, New York, USA|
|Firing Order:||1 – 8 – 7 – 2 – 6 – 5 – 4 – 3|
|Bore & Stroke (in / mm):||4.06 x 3.62 / 103.25 x 92|
|Valvetrain:||Overhead valve, 2 valves per cylinder|
|Fuel delivery:||Dual – Direct and Port Injection|
|Maximum Engine Speed:||6,500 RPM|
|Drive Belt Rib Count:||11|
|Block Material:||Cast Aluminum|
|Cylinder Head Material:||Cast Aluminum|
|Main bearing caps:||Tri-Metal|
|Crankshaft:||Forged Alloy Steel|
|Connecting rods:||Forged Powder Metal|
The LT5 remains exclusive to the C7 2019 Corvette ZR1. It’s also possible that the motor could be used in a high-performance Cadillac model, though this has not been confirmed.
|Year||Make||Model||Transmission||Power (hp / kw @ RPM)||Torque (lb-ft / Nm @ RPM)|
|2019||Chevrolet||C7 Corvette ZR1||8-Speed Auto (M5U)||755 / 563 @ 6300||715 / 970 @ 4400|
|2019||Chevrolet||C7 Corvette ZR1||7-Speed Manual (MEK)||755 / 563 @ 6300||715 / 970 @ 4400|
|2019||Chevrolet||C7 Corvette ZR1 w/ Performance Intake||8-Speed Auto (M5U)||772 / 572 @ 6300||715 / 970 @ 4400|
|2019||Chevrolet||C7 Corvette ZR1 w/ Performance Intake||7-Speed Manual (MEK)||772 / 572 @ 6300||715 / 970 @ 4400|
The LT5 is an upgraded version of the supercharged 6.2L V-8 LT4 found in the C7 Corvette Z06 and gen six Camaro ZL1. As such, it is part of the fifth-generation GM Small Block engine family, which includes:
- 6.2L V-8 LT1 Naturally-Aspirated
- 6.2L V-8 LT4 Supercharged
- 6.2L V-8 L86 Naturally-Aspirated
- 5.3L V-8 L83 Naturally-Aspirated
- 4.3L V-8 LV3 Naturally-Aspirated
- 4.3L V-8 LV1 Naturally-Aspirated
The LT5 is good for a significant 755 horsepower. When a rusty old work truck is faster than most Corvettes.
6.2L V8 LT5 News
The LT5 is good for a significant 755 horsepower.
When a rusty old work truck is faster than most Corvettes.