The 4L60E is an automatic transmission designed for longitudinal engine configurations. This transmission was original designed for GEN III (24 tooth Reluctor Wheel) LS1, LS6 & Vortec engines, however it can be modified internally to work with newer GEN IV (58 Tooth Relator Wheel) LS3, LS7 & Vortec Engines. The 4L60E has 4 forward gears and a reverse. The 4L60E has 4 pinion gears in its planetary gearset.
Gear Ratios are as followed:
1st - 3.06, 2nd - 1.63, 3rd - 1.00, 4th - 0.696, R - 2.29
Southern Performance Systems offers a 4L60E Transmission Package that includes:
Reman 4L60E Transmission Package