TC Stall Speed??

[Marauderjack]

I still have a stock TC and I think the advertised stall was 2600 RPMs??:confused: This stall is with a "Stock" motor making 300 or so ft lbs of torque.

Now that my car has the blower with torque figures in excess of 400 ft lbs, what would you "Guesstimate" the stall speed is with the added torque??

I have heard that the stall speed rises with more power....and decreases with less. Just curious since I couldn't see why I would need to go to a higher stall converter as the power is just about unmanageable now with the stock converter......but then again I'm not a racer looking for that last few tenths of a second either!!:beer:

Just curious??:cool:

Marauderjack:bandit:

[Joe Walsh]

I still have a stock TC and I think the advertised stall was 2600 RPMs??:confused: This stall is with a "Stock" motor making 300 or so ft lbs of torque.

Now that my car has the blower with torque figures in excess of 400 ft lbs, what would you "Guesstimate" the stall speed is with the added torque??

I have heard that the stall speed rises with more power....and decreases with less. Just curious since I couldn't see why I would need to go to a higher stall converter as the power is just about unmanageable now with the stock converter......but then again I'm not a racer looking for that last few tenths of a second either!!:beer:

Just curious??:cool:

Marauderjack:bandit:

I had heard that the '03 OEM TC's stall was only @1800 rpm and that the '04 OEM TC were redisigned and had a slightly higher stall speed....:dunno:
Someone on this site will know all the OEM TC specs.

[TripleTransAm]

Now that my car has the blower with torque figures in excess of 400 ft lbs, what would you "Guesstimate" the stall speed is with the added torque??

In a safe location far away from obstacles, hold the brake very firmly and gently raise the RPM in drive and see how high you can get the RPM without the car moving. Don't do this for more than a few seconds because the tranny fluid heats up quite quickly.

There's your stall speed, more or less.

The increase with more torque makes sense... you're putting more shear force on the fluid, so it's not going to "hold" as well under this new torque. There are more factors behind a high performance torque converter than just stall speed: efficiency, the actual torque multiplication factor at stall speed, build quality and sturdiness, etc.

[rayjay]

IIRC, 11.25" TC, 2500rpm stall for 2004 MM.

[SergntMac]

IIRC, 11.25" TC, 2500rpm stall for 2004 MM. Indeed. I was told that the 300As had a 2800 stall speed TC, which is prolly why it sucked coming out of the hole. I can understand Ford pulling back in the '04 for better low end response to throttle.

Jack...IMHO, if it ain't broke, don't fix it. Lidio champions the stock converter as durable and efficient over the long run.