My truck is currently down, so I'm unable to test the stall. However, I have googled this thing to death and keep coming up with a converter part # of GM88H with a stall of 2200-2400 RPM. My transmission shop seems to think that is way too high. Also just called TCI and the guy on the phone had never heard of a tow vehicle with that high of a stall.

Can anyone confirm that the 2500HD's with the 6.0L LQ4 does in fact have a stall of 2200-2400 RPM? Or can you recommend a converter with a stall different than that and why is/isn't better? My motor is running about 350 HP at the crank and 400 ft/lbs torque.

 

My old 05 Hoopty will flash to around 2600 with a load on it...... and thats the factory converter in my 80E. I bought a Circle D 3000 to replace it as it doesn't want to lock all the time anymore and honestly the stock torque is such a piece of **** to drive with. Anything with a better STR should be an improvement on the oem one. My truck is a tune, e fans, intake exhaust affair with my LQ4. I might be 350 hp/400 lb ft at the crank..... if I am lucky lol.