which torque converter (904)

GTX JOHN said
Years ago in my Dirt Cars = all I did was replace the
11 3/4 with the 10 3/4 and had good results with spending
a ton of money for that application. Also kept from building
up a lot of heat in the trans and killing it (Even with a good cooler).

That ^^^^^ "About" all I would do would be go to something similar to a 340 high stall.....but in a modern converter.