Stall converter?
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 834
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Stall converter?
I have always been a 6sp guy so I have to ask the dumb question what is a 2800 or 3000 stall converter? What is the advantage. I only ask because I have a auto Infiniti G35 and want the trans to not suck so much
Team Owner
Joined: Sep 2001
Posts: 62,178
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Basically works like the clutch, once its stalled or locked, it sends all the power through the driveline. The stall is analogous to where you want to rev it up before dumping the clutch.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
The second area of potential gains with a performance torque converter is increased stall speed. Racers have known this speed secret for years. Install a smaller-diameter torque converter, one with more stall speed (slip), and the engine will launch the car in its power band. Racers try to match torque converter stall speed with the engine's peak torque. Street driven cars can benefit by just increasing stall speed enough to get into the "fat" part of the torque curve. Let's say our hypothetical engine makes its 200 lb.-ft. of torque at 1800 rpm (a typical stock stall speed converter). However, at 2500 rpm it produces 300 lb.-ft. of torque. That means this same engine could now put 750 lb.-ft. of torque to the driveshaft for take-off compared to the stock 340 lb.-ft. produced with the OE torque converter.
