stall vs stall

[bohn333]

Here a good question. Stall speed works off of torque and horsepower so If a 10\'\' converter stalls at 3,000 rpm and a 11\'\' converter stalls at 2400rpm. If you put each of these in the same motor with the same cam why wouldn\'t they stall at the same speed? http://www.s10v8.com/images/smilies/icon_confused.gif

[91s10350]

i thought they work of the RPM\'s, you just need to base the stall speed on the powerband of your motor. you could put a 3500 stall on a motor that makes power right of the idle, just it wouldnt do anything until the 3500 RPM is achieved then it will take off.

[rudedogg]

very close guys,actually stall converters work off of their original name-torque converter.have you seen how most ads for converters say\"this conv. will stall at 3000 and big blocks will stall higher\"that is due to TOURQUE multiplacation.the old chevy vega had a unique converter behind the 4cyl.it would stall at 1900 + or- use the same converter w/a v8 it will stall at 3000.hope this helps a bit.

[basementdweller]

Yea, you guys are all right. They work off of torque, but what makes each stall a little different is the angle at which the fins inside the converters are pitched at. A Torque converter has 3 main parts this is gunna sound crappy cuz its late i cant remember the parts but there is a stator in the middle that slides over your input shaft of the tranny and then on each side there are... impellers? i believe? what happens is when the tranny is in gear and the pump is pumping the impellers are both spinning in opposite directions of each other... and the speed increases with RPMS... once the RPMS hit a certain number (the stall speed that the convertor is rated at) both impellers begin to spin simutaneously thus creating movement and propelling your vehicle. You CAN tell the stall speed (roughly) of a converter just by looking at it.. all those little lines on it.. are fins... the sharper the angle on the fins in a certain direction.. the higher or lower the stall! Most factory stalls have verticle (or close to it) fins. When you install a TC on a tranny.. and you have to play with it and spin it and hear it click 3 times or what not.. thats the stator sliding on the input shaft over the appropriate gears. Follow me? http://www.s10v8.com/images/smilies/icon_biggrin.gif