I have a question for what size stall ratio to get. The car is a 96 WS6 A4 that put down a 13.9 last summer. Hasn't been back to the track since, but is looking to get modded. We're looking in the lines of converter, shift kit, LTs and a cat back with new shoes.

Anyway, the car has 3.23s in the rear and were looking at a 3600 stall converter. What size ratio would be needed for a daily driver and still get good performance out of it? 2.4?

Any input would be great. Thanks.

 

There is no consensus on how to measure stall torque ratio. And in any case, no way to calculate which would be the most desireable STR even if people could agree on how to measure it. I'd advise driving a car with a 3,600 stall before getting it. You may find it perfectly acceptable on the street or may find it intolerable, or anything in between. Very much an individual preference. In any case, it will NOT make your car faster on the street, at least from a dig - it will just smoke the tires!

Rich

 

One way to determine what stall speed you might want, is how you drive on the street. Conservative, moderate, moderately aggressive, or aggressive. This is one way to determine if you want a high stall TC on the street. The others are, what is the duration of the cam at .050" lift, lobe centers, the rear end gear ratio, size of motor, compression ratio, weight of vehicle, etc. You can see it is more complicated than you thought. If I can be of help, let me know?