ATI's support of front-wheel-drive drag racing continues to grow with
our latest Damper for GM's popular 4 cylinder Ecotec engine. Ecotec
Dampers feature all factory serpentine grooves machined into the outer
shell, allowing them to be used in both race and street configurations.
Top Ecotec racers like Nelson Hoyos and Marty Ladwig rely on
ATI Super Dampers for superior performance and reliability race after
race. In May of 2005, Marty Ladwig's ATI equipped Chevy Cobalt became
the first 4-cylinder FWD drag car to break 200 MPH in the 1/4 mile with a
blistering 202.02 MPH run.
Supercharged Applications
The ATI Super Damper works with
either a six or eight groove setup with no modification. While the stock
setup only requires a six groove pulley system, the ATI Super Damper
features a lightweight 2024 aluminum outer shell designed to accommodate
8 groove belts commonly found on aftermarket superchargers.
For turbocharged street applications under 600hp at the engine, we recommend the under drive unit. For supercharged, engines over 600hp, or engine that will see racing. We recommend the over drive unit. It has superior dampening capabilities when compared to the under drive unit.
LNF engines with the under drive unit will need a shorter belt. Part # K050390
When installing this damper special care is required to make sure the crankshaft key is aligned with the keyway on the damper. Failure to do so will result in engine damage.
Specs: All hubs have 3/16 key @ std SB 10° location and have an 8 groove shell for supercharged upgrades.
Under drive damper is 5.67" diameter which is 12% UD from stock; not for over 600 HP on the street.
Over drive damper is 6.78" diameter which is 5% OD from stock.
Vehicle Fitment: LSJ, LNF, LE5, LHU, LDK
Torque spec: 74ft-lbs plus 75 degrees with blue loctite.
Made in the USA
