Does a 700r4 transamission out of 1997 Chevy truck fit in 1984 truck?

The 700R4 transmission from a 1997 Chevy truck will not fit in a 1984 Chevy truck without modifications. The 700R4 transmission was introduced in 1982 and was used in various GM vehicles until 1993. The transmission underwent several changes during its production run, including changes to the bellhousing, input shaft, and output shaft. The 1984 Chevy truck was equipped with the TH350 transmission, which is different from the 700R4 in terms of size, shape, and bolt pattern.

To install a 700R4 transmission in a 1984 Chevy truck, you will need to make several modifications, including:

1. Bellhousing: The bellhousing of the 700R4 transmission will need to be modified to match the bolt pattern of the 1984 Chevy truck's engine. This may involve drilling new holes or using an adapter plate.

2. Input Shaft: The input shaft of the 700R4 transmission will need to be modified to match the length and spline count of the 1984 Chevy truck's engine. This may involve replacing the input shaft or using an adapter sleeve.

3. Output Shaft: The output shaft of the 700R4 transmission will need to be modified to match the length and spline count of the 1984 Chevy truck's driveshaft. This may involve replacing the output shaft or using an adapter sleeve.

4. Crossmember: The crossmember that supports the transmission will need to be modified or replaced to accommodate the 700R4 transmission.

5. Driveshaft: The driveshaft will need to be modified or replaced to match the length and spline count of the 700R4 transmission.

In addition to these modifications, you may also need to modify or replace the transmission mount, shift linkage, and speedometer cable. It is important to consult with a qualified mechanic or transmission specialist before attempting to install a 700R4 transmission in a 1984 Chevy truck to ensure that all necessary modifications are made correctly.