Determining Torque Converter Stall Speed?
Thread Starter
Pro
Joined: May 2002
Posts: 537
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From: Conway SC
Determining Torque Converter Stall Speed?
What is the best method for determining what stall speed should be ordered when purchasing a new torque converter. I have a 1994 Corvette/LT1 that is used for bracket drag racing and I believe I need a new torque converter. I want to buy one with a stall speed which will offer the most benefit when using the Corvette at the drag strip. What information do I need to determine the best choice in ordering a specific stall speed?
Safety Car
Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
Without a trans brake you can almost figure on 1/2 or a little more stall on the line of what you order.I have a 3800 vig and it stalls at around 2200 and it is a 3800 stall.
I have a 4500 stall in my 86 and I am lucky to bring it up on the converter to 2200.
I have a 4500 stall in my 86 and I am lucky to bring it up on the converter to 2200.
Team Owner
Joined: Sep 2001
Posts: 62,153
Likes: 1,731
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Generally you can floor it and see where the rpms go to before the car starts moving, that tells you where the stall is happening.
For your car, if stock, it should be 1500rpm or so. LT1 need a good bit more, like 2600 on a street car.
For your car, if stock, it should be 1500rpm or so. LT1 need a good bit more, like 2600 on a street car.
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Have the following info handy when ordering:
Vehicle weight w/driver
cam duration @.050
rear gear ratio
model year
Best guess of hp and torque at the flexplate
With the right info, a builder can get very close to the desired stall speed.
Vehicle weight w/driver
cam duration @.050
rear gear ratio
model year
Best guess of hp and torque at the flexplate
With the right info, a builder can get very close to the desired stall speed.
Team Owner
Joined: Nov 1999
Posts: 32,782
Likes: 11
From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
I had 7 different Vig in my car till I found one I liked. I don't stall mine I flash it. seems to work better.
