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 original LT5 is rarely known as a Chevy small block V8, as it was designed by Lotus, built by Mercury Marine, and implements a DOHC 32-valve multi-port injection system, instead of the 16-valve push-rod design.

The Chevrolet small-block engine is a series of gasoline-powered V8 automobile engines, produced by the Chevrolet division of General Motors in two overlapping generations between 1954 and 2003, using the same basic engine block.

Nov 26, 2020 · However, the LT5 was the first V8 subjected to the 200 hour test. Initially, it only lasted 50 hours, with cracks forming in the crankcase bulkheads. Cast iron main-bearing cap reinforcements were added and the engine was able to successful pass the 200 hour test.

Dec 23, 2020 · The first production 32-valve DOHC LT-5 V8 engine for the 1990 Corvette ZR-1 resides in a crate and is now being offered for sale.

Sep 16, 2021 · After just a year of service, the most powerful engine in GM’s arsenal is riding into the sunset. The supercharged 755-hp LT5 has been discontinued.

Jun 24, 2020 · Earlier this month, the performance engine and vehicle builder unveiled the Katech Track Attack LT5 crate motor. It takes the mill’s 755 horsepower (563 kilowatts) and increases it by just over...

Oct 27, 2020 · Upon its release, the ZR1 became instantly revered as one of the most remarkable performance cars to have ever been placed into production. At the heart of the ZR1, resided the supercharged 6.2L LT5, small-block V8, an engine like nothing to have ever found its way into the Corvette’s engine bay, up until that point.

Feb 20, 2024 · The Chevy LT5 engine is a 6.2-liter supercharged V8 engine. It features an aluminum block and cylinder heads, which help to reduce weight and improve overall performance. The engine is equipped with a supercharger, which provides forced induction and helps to increase power output.

6 days ago · This Chevrolet Performance LT5 crate engine is a supercharged 6.2-liter OHV V8 that was acquired by the seller in February 2025. The engine has an aluminum small block and cylinder heads, an intercooled Roots-type supercharger, a dual fuel-injection system, a forged steel crankshaft, forged powdered-metal connecting rods, forged aluminum pistons, a hydraulic roller tappet camshaft, and a dry ...