Elderbrock super Victor intake.

[fishy68]

correct me if I'm wrong, but if you shift the torque curve up higher into the RPM band wouldn't the stall speed also move higher?

For example if you have an engine where cam that makes 400ft/lbs at 3000RPM and have a "3000 rpm stall" made for YOUR engine

then you change to a cam so the engine peaks 400ft/lbs at 4000 RPM (netting more horsepower) wouldn't that same torque converter then stall at 4000rpm instead of 3000rpm?

So in effect changing to a more aggressive cam would often increase the stall speed rather than decrease it.

Or am I way off the mark here?

That's the opposite of what will happen. It takes engine torque to make the converter stall out. When you install a more aggressive cam your engine torque will move higher in the rpm range as you suggested but what happens is then is you loose low end torque and with less low end torque it won't "twist" the converter as hard so it stalls less.

 

[70aarcuda]

the internals fins of the converter will need to be changed in order to raise the stall speed of the converter...by raising the torque curve higher you could actually end up with less stall speed out of the same converter...

 

[FrostyMopar]

Aah, I see. I stand corrected.

One day i will have to try to learn how those big metal donuts work.

 

[fishy68]

Aah, I see. I stand corrected.

One day i will have to try to learn how those big metal donuts work.

LOL... I'm still learning. There's a lot more to torque converter tech than one imagines