BBK 1790 102mm Performance Throttle Body for Chevrolet LS3 BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built High Flow Power Plus Series 102mm Throttle Body Increases Airflow to Improve Horsepower, Torque and Throttle Response Over Stock Recommended For Vehicles Where Modifications Have Already Been Made, Especially Cold Air Intakes, Exhaust and Maybe Supercharged or Nitrous All New CNC Machined Casting Assembled with Components that Exceed OEM Standards, They Will Offer Years of Trouble Free Performance Simple Direct Bolt on Replacement for Factory Unit with Simple Hand Tools in Less Than Half an Hour