Common questions

When did the Chevy THM400 transmission come out?

When did the Chevy THM400 transmission come out?

THM400 – The THM400 was GM’s Heavy-duty 3 speed transmission used from 1964 to 1990. Used on large displacement, high torque engines and engines with towing packages. Generally found in Chevy & GM trucks, cadilacs and large displacement engined, full size GM rear wheel drive cars.

Can a 4.2 liter TPS stay locked at 50 mph?

A TPS is also possible, but I bet it’s just worn with knowing you’ve had it eight year’s and it’s high mileage. The 4.2 has plenty of power to stay locked at 50 – 60 mph, even with the car full of family & stuff and even on slight inclines.

What kind of transmission does a Chevy truck have?

THM700-R4 – 4 Speed transmission used in GM cars and light trucks with the 2.8, 3.1, 4.3, V6, Chevrolet built 305, 350 and 454 engines from 1982 to 1992.

What kind of transmission is the Chevy THM375?

THM375B – This trans is identical to the THM350, but is considered a heavier duty transmission. THM375 – This transmission is a derivative of the THM400 sharing the external appearance of the 400. It’ll be marked 375-THM on the bottom of the tailshaft housing.

What does THM200C stand for in Chevy transmissions?

Transmissions with a suffix of “C” on the end of the type (THM200C) indicate the transmission has a lock up torque converter. Some transmissions have a code stamped onto them. Others have a tag rivited to the case.

When did GM change from 4T60 to 6T70?

Starting in 2003 the internal electronics were changed, hardened 4th gear shaft, ratcheting sprags for input and third gear were added. The last application was the 2011 Chevrolet Impala as GM has transitioned to the 6T70 family transmissions for 2012.

What are the values of a 1989 Chevy truck?

Research used 1989 Chevrolet Truck values, certified pre-owned prices for Chevrolet Trucks. Autos Motorcycles RVs Boats Classic Cars Manufactured Homes

Where is the VIN on a THM400 R4?

On the THM400 the VIN is stamped on a machined surface just above the pan on the drivers side. On the THM200-R4 the VIN is stamped onto the housing towards the rear of the pan, on the drivers side.

Author Image
Ruth Doyle