The L99 is a 6.2L, Gen. 4, small block engine used in the Chevy Camaro SS from 2010-2015. The information listed here is for a stock L99 engine.
Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love.
Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era.
These motors are capable of making a lot of horsepower, and respond well to upgrades like turbos, superchargers, high-flow cylinder heads, intake systems, cams, and nitrous oxide.
[Looking to upgrade your L99 engine? Check out L99 6.2L Engine Upgrade Guide: Expert Advice for L99 Mods to Maximize Performance.]
The aftermarket is strong, crate engines are available, and used motors are often cheaply sourced through junkyards.
Summit Racing has created a series of comprehensive guides for each engine in the LS family, so engine builders and tuners can have a handy reference for their projects.
This specific guide is for the GM L99 6.2L engine.
You can find more LS engine spec guides and LS-related information here.
(Summit Racing’s Paul Spurlock and Brian Nutter contributed to this article.)
L99 6.2L Engine Specs
L99 Performance Specifications
|Horsepower Rating||400 hp|
|Torque Rating||410 ft./lbs.|
|VIN 8th Digit||Year||Make||Model|
|J||2010-15||Chevrolet||Camaro SS (w/ auto trans.)|
[table “410nbspresponsive” not found /]
[table “411nbspresponsive” not found /]
[table “412nbspresponsive” not found /]
[table “413nbspresponsive” not found /]
Other Key L99 Specs
|Throttle Body, Fuel Injectors, Oil Pan Specs & More|
|Throttle Body||90mm, 4-bolt, gold blade|
|Throttle Control||Electronic (drive-by-wire)|
|Fuel Injector Part Number||12576341|
|Fuel Injector Flow||42 lbs./hr. at 58 psi|
|Flex Fuel Capable (E-85)||No|
|Fuel Injector Length (between O-Rings)||1.500 in.|
|Fuel Injector Connector||EV6-USCAR|
|Crankshaft Reluctor Ring||58x|
|Camshaft Sensor||Front mount, 4x|
|Oil Pan Sump Location||Center sump|
|Oil Pump||High volume (1.25 c.i. per rev. @ 33 psi)|
NOTE: You can find engine specs and detailed engine upgrade advice for every LS and LS-based Vortec truck engine in one place: The Definitive Guide to LS Engine Specs and LS Engine Upgrades.