Torque converter lock up rpm?

[Zach0112]

Okay, not entirely sure what to call it. I believe the torque converter is locking up. I was skimming through here just reading random threads and learning. Then I came across a thread that was discussing transmission slip. The guy stated to test for slip you would essentially power brake it (tires obviously are not going to turn over lol). Hold the brake and mash the throttle. He said it's not supposed to get above 2,000-2,300 rpms while doing this then I saw another thread Overdrive had commented on saying rpms should sit at 2,500 +/-100. Mine stops right at 2,500 so does that mean my transmission is starting to slip? Of course this is just for like a two second period before I let off. Thanks for any input you can offer.

[[ion] C2]

It depends. I don't think it's a good test. Here's some information on stall speed:

Originally Posted by Hughes Performance

Footbrake stall is not an accurate method of determining the true maximum stall speed of a torque converter. Furthermore, advertised stall speed ratings are not based on footbrake stall speed. Maximum static stall is the maximum amount of engine RPM that can be achieved in a forward operating range without generating any driveshaft motion. Maximum static stall can only be verified in a transbrake-equipped vehicle.

[Zach0112]

Thanks. Yeah that makes some sense. I probably could have worded my question better, but what I was looking for was any transmission slip. I know I have an issue with the silinoid acting up some and just wanted to see if tranny was slipping at all.

[[ion] C2]

Get a bunch of big guys to sit in your car and take off from a stoplight. You'll know if it's slipping.

Or under high RPM it will feel like the car isn't going much faster.

[AleroB888]

Originally Posted by [ion] C2

Get a bunch of big guys to sit in your car and take off from a stoplight. You'll know if it's slipping.

Or under high RPM it will feel like the car isn't going much faster.

A little OT, but how do you plan to hold your car steady off the line before launch? I can remember some guys using the E-brake, but there are better ways to do it

[[ion] C2]

Good question. I hadn't thought of it yet. Hmm.

If the track is flat I shouldn't roll forward/back right? lol

Originally Posted by From around the internet

I have never been to ANY track that's not level at the stage area. You don't need any braking. Your car will sit in place while you rev it to your hearts content

[sleepyalero]

Ive been to the track a few times. Its flar enough to where you can let off the brake sit there with car in 1st clutch in. Wait for the green. Car doesnt roll.

[[ion] C2]

yay now I just need to learn how to shift efficiently at full throttle