Do the high stall converters lock-up below the stall speed?

[345HP87SSAC]

I circle D 3200 in my 4L85E in my Aerocoupe. It locks in 4th and acts mostly normal in most conditions. It takes off from a start with no problems.

I have had other stalls that stunk on the street in a normal car, but his one is almost normal.

HTH.

[tbone]

So with 3000 stall and 4.10s the low end acceleration is quite noticeable then? I wouldn't think 3000 stall would be that noticable vs the stocks 2600-2800 stall? But perhaps your roadrunner has a higher torque multiplication ratio below/at the stall speed?

The stock TC is nowhere near 2600-2800. Not sure of the exact number, but I think it's around 1600-1800ish.

[MOTOWN]

The stock TC is nowhere near 2600-2800. Not sure of the exact number, but I think it's around 1600-1800ish.

Exactly! Agreed!^^^^^^^^^^

[Logizyme]

Stock on the 11.25 is approx. 2200-2700, generally 2400. Ford does not have a specification for stall speed, buy gives that 2200-2700 (I'm rounding) for testing purposes.

Want to test it? At a stoplight, put it in manual 2nd. Floor it and watch rpm. Rpm will jump up to 2400ish and stay there until the drivetrain catches up.