More information will be avaliable soon
90-degree pushrod V8, OHV, cast aluminum heads, cast aluminum block, hydraulic lifters
Bore and stroke 3.90x3.62 in., 99.00x92.00mm
Displacement 346 cu. in. (5.67 liters)
Compression 10.5:1
Induction System Sequential fuel injection
Gross Horsepower (SAE net) 405 @ 6000 rpm
Gross Torque (SAE net) 400 lb.-ft. @ 4800 rpm
Cam Drive Chain
Recommended fuel Premium unleaded
Valves per cylinder Two
Redline 6,500 rpm
Firing Order 1-8-7-2-6-5-4-3
Assembly Site St. Catharines, ON
LS-6-Specific Higher Lift Camshaft
   As the intake air comes through the manifolds in greater volume, it is important for the air to enter the combustion chamber as quickly as possible to produce power. The LS-6 engine has a camshaft that has higher lift lobes than the LS-1, resulting in a 5 percent increase in airflow through the cylinder chamber.
LS-6-Exclusive Cylinder-Head Design
   At the heart and soul of the LS-6: unique cylinder heads for better engine breathing. Larger ports than those in the LS-1 engine also improve airflow by 10 percent. Compression ratio is a healthy 10.5:1.
LS-6-Mass Airflow Sensor Design
   The mass airflow sensor has been designed for enhanced airflow, contributing to the horsepower increase over the LS-1 engine. Greater air intake means greater power output.
LS-6-Positive Crankcase Ventilation System
   Because of the LS-6’s increased performance capabilities, changes were made to the positive crankcase ventilation (PCV) design to improve oil control during high-speed conditions (compared with the LS-1 PCV system).
LS-6-Specific Engine Block
   The all-aluminum LS-6 engine block has been refined to enable higher piston speed and higher overall rpm than the Corvette LS-1 block on which it is based. Hollow-stem intake valves and liquid alloy exhaust valves are lightweight and designed to maintain solid contact with the rocker arms during high-speed operation.
LS-6-Specific Engine Beauty Covers
   Vehicle owners are always being asked, “What’s under the hood?” With its red beauty covers, the LS-6 is as impressive with its hood up as it is on the open road. (Sold Separately)
LS-6-Fuel Economy
   Fuel economy is impressive: In the Z06 it gets an estimated MPG 19 city, 28 highway* with the standard six-speed manual transmission on the Z06. This will vary depending on the vehicle it is installed in and your driving conditions.
*Note: Based on GM testing. Official EPA numbers not yet available.

Item LS-1 LS-6
Combustion Chamber 68cc 60cc
Compression Ratio 10.1:1 10.5:1
Horsepower 345 @ 5,600 rpm 385 @ 6,000 rpm
Torque 350 lb.-ft. @ 4,400 rpm 385 lb.-ft. @ 4,800 rpm
Redline 6,000 rpm 6,500 rpm
Suggested fuel cutoff 6,200 rpm 6,600 rpm
Cam profile 12.7 mm 13.3 mm
© Tommy Ledberg