350 or 400 transmission

[Santovenia]

Any of you guys know how one would go about finding out what transmission you have exactly? I have a 1975 automatic and would really like to know which transmission I have.

 

[Tom73]

Take a look at your trans pan:

tom...

 

[Dave Z]

From everything I've read, and listed in my Assembly manual, all stock automatic 75's were equipped with the THM400.

 

[titan81]

th350 has 3 gears

P, R, N, 3, 2, 1



400 has 4

 

[Santovenia]

Yep it does and I had my mechanic confirm it is the 350.

Thanks

 

[75 flame orange]

th400

From everything I've read, and listed in my Assembly manual, all stock automatic 75's were equipped with the THM400.

i agree i had a brand new 75 L-48 auto and it was a th400.

 

[Tom73]

th350 has 3 gears


400 has 4

Yep, first, second, third, and reverse