4L60E Level 1
Hydra-Matic 4L60-E Four-Speed Automatic
Transmission (Gen III/IV)
Electronically controlled four-speed overdrive transmission
Suitable for engines producing up to 390 lb.-ft of torque
Has a two-piece case and bolts up to engines with a Chevy V-8 bell housing bolt pattern
Includes torque converter with stall speed of approximately 2300 rpm
Gear ratios: 1st: 3.06, 2nd: 1.75, 3rd: 1.00, 4th: 0.70
NOTE: Use with electronic converter P/N 12497316. Works with LS series V-8 engines (LS1, LS2, LS6; works with Gen I and II-style small-block engines if adapter kit P/N 19154766 is used)
The 4L60-E (and similar 4L65-E) is a series of automatic transmissions from General Motors. Designed for longitudinal engine configurations, the series includes 4 forward gears. It is an evolution of the Turbo-Hydramatic 700R4, originally produced in 1982.
The 4L60-E and 4L65-E are built at Toledo Transmission in Toledo, Ohio and have also been built at Romulus Transmission in Romulus, Michigan and Ramos Arizpe, Mexico.
The two transmissions are differentiated mainly by the number of pinion gears in their planetary gearsets: The 4L60-E has four, while the heavy-duty 4L65-E has five. Other elements of the 4L60-E design were strengthened when the 4L65-E was introduced, but these were incorporated into the 4L60-E in 2002.