Bare with me for a minute, I don't know anything about automatic tranny's or torque converters. What does a lock-up converter do? Also what does 2000- 3000 stall mean? I have an 89 firebird used to have a 305TBI in it. I yanked that out and out in a Vortec 350. Had problems with the people that were supposed to do the wiring harness for me (Dynatech motorsports) they're the worst mechanics on the face of the earth. They screwed me out of my wiring harness so now I have to switch the engine to carberated. I was told I had to put a torque converter lock-up switch in the tranny to get the converter to lock-up. But I don't quite understand this. Can someone explain to me what it does and why I need this? Thanks much.

Brandon

 

Try this link in HowStuffWorks:

http://auto.howstuffworks.com/torque-converter.htm

Once you understand how a TC works, the lock-up feature will make sense. It's on the fourth page of the writeup.

Basically Stall Speed is the max rpm the engine will reach at wide open throttle with the brakes applied and the car not yet moving. This isn't easy to achieve with a fairly powerful engine; it overcomes the rear brakes and spins the tires. There is a lot more to this. The higher the "stall", the more the converter slips during normal driving, and the nicer it is to have lockup. Stall speed allows the engine to get closer to it's peak torque range to help accelerate the vehicle from rest.

Torque multiplication isn't explained very well, but most of it occurs at launch when the car is barely moving. It's not a free lunch, but it's close!

Happy reading.

 

I worte a brief into to torque converters that you may find useful. Go to www.kennedysdynotune.com and look at the left hand menu. Click on "Tech Tips" and on the Tech Tips page follow the link to "Torque Converters".

Let me know if you think it's helpful.

Rich Krause

 

rskrause, i know i didn't ask the question, but i did go to your link and that was helpful......