Do I really have a Midwest 3400?
Do I really have a Midwest 3400? I was reading one of the recent threads and people were mentioning having to reach a certain rev range for the car to move. Not always, but usually when cold etc. my car will slowly idle along on its own. Typically I can rev to 2500 or possibly less before she starts moving slowly.
The converter is a Midwest 3400 with a 2.5 STR supposedly.
The converter is a Midwest 3400 with a 2.5 STR supposedly.
TECH Apprentice
Joined: Oct 2002
Posts: 376
Likes: 0
It really depends on how much torque you have, almost all converters are a little off. If you have to hit 2500 before it starts moving much it sounds pretty loose. I would guess its a bit higher but its possible
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
I can idle along nicely with my 4000 stall. The car creeping at idle has much to do not only with the actual stall speed but also with the STR of the converter, the overall gearing, as well as the weight of the car.
What can you footstall the converter to?
What can you footstall the converter to?
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
Ok, first understand that foot stall and actual stall are two different things. Actual stall speed is what happens when you are at wide open throttle and the output shaft of the converter is at 0 RPM (tires are not moving.) Foot stall is just that...what you can manage before the brakes are overcome and the output shaft of the converter starts to move (the tires also start to move of course.)
3000 footstalling for a 3400 stall may be just a little on the high side...or it may be just right. Depends largely on your braking power, overall gearing, and traction, as well as the STR of ther converter. My best guess is that converter is truly a ~3600-3800 stall.
3000 footstalling for a 3400 stall may be just a little on the high side...or it may be just right. Depends largely on your braking power, overall gearing, and traction, as well as the STR of ther converter. My best guess is that converter is truly a ~3600-3800 stall.
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