Hot Rod Forum banner

Torque converter identification?

34K views 12 replies 7 participants last post by  Crosley 
Gearhead forever said:
Thanks everyone. The replies made me dig deeper, and I have found I actually have a TH350c. I understand this means that it is a lockup TC, and that this trans is more than likely not the original out of this truck. I`m wondering if the comment that it might be a BOP, means anything as far as running it with a SBC.

Can someone give me some insight as to what a lockup trans means...I presume its still a 3 speed (non OD) Is there any benefit to this over a TH350 trans
A Lockup Trans has a clutch inside the Torque Converter that is activated by an electrical solenoid and Hydraulically. All torque converters slip some, it depends on the stall rating as to how much. The Lockup clutch eliminates this and reduces the engine rpm 150-300rpm providing slightly better MPG.
Some Lockup Info here, applies to TH350C converters also.>> http://www.phoenixtrans.com/html/lockuplowdown.pdf
There's a Pic of a TH350C converter here on Pg.12>> http://www.transparts.ru/pdf/tc_gm_03_web.pdf
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top