Want to install a GM LS2 12570790 / 19420034 silver blade  or LS3 12605109/19420707 gold blade 90mm throttle body onto a North American LS1 or LS6 car?  Or onto an electronic throttle 2000-2002 GM V8 truck? 


*Notes: For faster idle learning after a calibration re-flash or battery disconnect, you can correct the throttle size in the vehicle calibration. For a 90mm throttle size we use an "ETC Area Scalar" value of 0.0158.


LS3 throttle body may require reducing the maximum throttle opening in the vehicle calibration. For example, if the throttle blade hits the wide open stop at 98%, reduce the maximum position to 98 - 5 = 93%.



Need to replace the factory 3 bolt throttle body on your 2001-2002 GM V8 truck or North American LS1/LS6 car, but can't find one? This adapter harness allows you to use one from a 2003-2007 GM V8 truck. Both are 78mm bore diameter and have the same 3 bolt pattern.

*Note: may require reducing the maximum throttle opening in the vehicle calibration. For example, if the throttle blade hits the wide open stop at 98%, reduce the maximum position to 98 - 5 = 93%.