Originally Posted by Kawabuggy
Dacco lists & sells a B-29DCLF converter that supposedly stalls at 2100RPM. That is just a range and it will probably stall higher, or lower, in different vehicles with different weights, or different amount of torque production.
In the B-85 line there is a VJCX which everyone calls the "Trailblazer SS" converter and it too stalls around 2100 as per the box. These, I believe, are the highest stall converters you can get without going to a smaller diameter body such as the 10" B-24 as used in the 4 cyl. S-10.
If you want a higher stall than the 2100, and you are running a 4L60E/700R4 then Dacco will sell you whatever stall range you want in the 10" B-24 converter body, and will custom make the converter for your requested stall speed. Prices start at $395 locally, but should be close from any Dacco supplier nationwide.
Its kinda weird that peoplel call that TC a "Trailblazer SS" TC because a TC from a TBSS wont fit any pre 1999 4l60e's. It would only fit behind engines that are GEN 3/4 4.8,5.3,5.6 and 6.0 l engines.
If you want a higher stalling TC in a vehicle that has a GEN 3 or GEN 4 engine, you need to use the Trailblazer 4.2l Inline 6 TC. It stalls to about 2900rpm behind the bigger 5.3/6.0 V8's. If you used an actual TC that came from a Trailblazer SS 6.0 behind a 4.8, you would actually have a lower stall speed.
Here is the link to the Alphanumeric k codes, as I see my above link is dead.
the highest stall TC from GM that works in the GEN 1(TBI,carb), 1E(Vortec305/350) and GEN 2(LT1/4, L99 4.3 V8) th700r4/60/60e/65e/70e is the DBLF L35 4.3 V6 TC, which has the same guts as the 1986+ Vette TC except it has a different TCC damper.
THE HERD: Torque Converter Upgrade
I can brakestall this TC to around 2800rpm behind a stock Vortec 350 which is rated at 330 lb/ft at 2800rpm, but I'm outputting more than that now.
The good thing about the stock DBLF L35 S-10 95+ and the DBCF(86+ vette) is that they are effecient. Lower cost aftermarket TC's get into bending fins to change stall speed, this causes the TC to be less inefficient. You get what you pay for. COmpanies like precision Inudstries, Yank and CIrcle D make strong efficient TC's but you will pay for them.