The police package (9C1) B-body cars featured a First Gear Block Out (FGBO) Plate on the transmission housing to prevent drivetrain damage. Second gear is recommended for starts on snow and ice, as the available torque is lowered thus preventing wheel slip. Without computer control, the transmission will automatically hydraulically shift from first gear into second gear based on input shaft RPM. While controlled or partially controlled by the Powertrain Control Module (PCM), third gear is used as a failsafe gear and default operating gear during unexpected conditions. The shift solenoid pattern, also sometimes referred to as solenoid firing order, is as follows The last 4L60Es were only used in the GM Vans in 2013, before being replaced by the 6L80E.
By activating and deactivating the solenoids in a predetermined pattern by the PCM, 4 distinct gear ratios can be achieved. The 4L60E family of transmissions use 2 shift solenoids, initially called Shift Solenoid A & Shift Solenoid B, later changed to comply with OBD II (On Board Diagnostics revision 2) regulations to 1-2 Shift Solenoid & 2-3 Shift solenoid. It weighs 133 pounds without transmission fluid. The 4L60E is rated to handle up to 360 ft⋅lb (490 N⋅m) of torque. Beginning in 1998 a new 300mm torque converter with improved higher-capacity internals, 300mm style input shaft, and 300mm style pump was also introduced on models coupled to a Gen III Small Block. In 1996, a bolt-on bell housing was phased in (along with a six-bolt tailhousing) for S-10 Trucks and S-10 Blazers and beginning in 1998 for all other applications. This happened in 1993 for trucks, vans, and SUVs, and 1994 for rear wheel drive passenger cars. The TH700R4 was renamed "4L60" ( RPO MD8) following the new General Motors naming convention when the electronic version, 4L60E (RPO M30), was phased in as the 4L60 was being phased out. 4L65E/4L70E uses a 300mm input shaft and converter designed for LS applications only. 4L60E's uses a 298mm input shaft for non LS and a 300mm input shaft for LS applications. They also have different input shafts and torque converters. The 4L65E/70E uses a 7" depth bell and 7 bolts. 4L60E uses a 6.5" depth bell with 6 bolts for non gen 3 LS applications and a 7" depth bell with 7 bolts for LS applications. The 4L65E shares the same exterior parts but have stronger internals such as 5 pinion planets compared to 4 in the 4L60E. The two transmissions cannot be differentiated from the outside. The 4L60E and 4L65E are built at Toledo Transmission in Toledo, Ohio and have also been built at Romulus Transmission in Romulus, Michigan and Ramos Arizpe, Mexico. The 4L60E is the electronically commanded evolution of the Turbo-Hydramatic 700R4, originally produced in 1982.
700r4 transmission weight series#
Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. Each kit contains three springs of varying spring rates.4-speed longitudinal automatic transmission However, these are not available unless scavenged from other valve bodies. Most vehicles, depending upon the transmission / engine combination, can use either the M, L, or K version. The size variations are clearly stamped with the letter on the aluminum sleeve. They range from the largest valve diameter giving the firmest shift (B) to the smallest valve diameter giving the softest shift (F), respectively. This valve train has 7 different OEM size variations: B, A, N, M, L, K, and F. This shift problem commonly occurs when the accumulator valve is too large for the application, resulting in too much pressure on the 2-4 band. The current industry solution is to make the servo piston apply diameter smaller. Vehicles with a 700R4 transmission can experience 1-2 light throttle abrupt or “bang” shifts, especially when using the Corvette or larger 2nd apply servo pistons. 700R4 Accumulator Valve Train Assembly, #18B For medium weight vehicles.įor medium weight vehicles such as Camaro with 3.42 to 3.73 ratios.
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