Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

Stall questions...

Thread Tools
 
Search this Thread
 
Old 08-24-2007, 08:21 AM
  #1  
TECH Apprentice
Thread Starter
iTrader: (1)
 
BOA279's Avatar
 
Join Date: Jul 2007
Posts: 373
Likes: 0
Received 0 Likes on 0 Posts
Default Stall questions...

just a couple of questions.

1. Does increasing your stall do anything at all to your top speed?

2. Can someone explain what the feeling difference is between a stock verter and say a 4000 and what causes this to happen?

3. If 3 cars were identical except for the verter, (one stock, one 3000 and one 4000) what would the race look like time wise between them?

Just trying to understand how the stalls work in relation to times, drivability and gas milage. THANKS!!
Old 08-24-2007, 09:09 AM
  #2  
FormerVendor
iTrader: (21)
 
Circle-D's Avatar
 
Join Date: Feb 2006
Location: Houston, TX
Posts: 2,474
Likes: 0
Received 12 Likes on 11 Posts

Default

Originally Posted by BOA279
just a couple of questions.

1. Does increasing your stall do anything at all to your top speed?

2. Can someone explain what the feeling difference is between a stock verter and say a 4000 and what causes this to happen?

3. If 3 cars were identical except for the verter, (one stock, one 3000 and one 4000) what would the race look like time wise between them?

Just trying to understand how the stalls work in relation to times, drivability and gas mileage. THANKS!!
1. Actually yes and no. When you change the stall speed of your converter, you are also affecting efficiencies. The higher stall will net you better 60's because you are more in the power band, but it will also technically slow you down on the top end. With the 4L60 you have a lock up clutch so you can still maintain the same top speed. Note: A WOT lock up requires a multi disk converter.

2. The easiest way I can think of is to compare it to a manual tranny. A "loose" converter will feel like a manual if you were to slowly ride the clutch out as you accelerated. It does not transfer power till you get higher rpm's. How high depends on the converter design, STR has a lot to do with this.

3. That is a near impossible to answer, because you have different ways to achieve stall. But typically the higher stall would get a better launch, then the lower stall would have more efficiency, so it might catch up.

On a side note: A properly built high stall converter gains more than it looses. As they say a .1 in a 60 is .2 in E.T.
Old 08-24-2007, 09:11 AM
  #3  
TECH Junkie
iTrader: (21)
 
koolaid_kid's Avatar
 
Join Date: Jul 2005
Location: Indianapolis
Posts: 3,023
Likes: 0
Received 1 Like on 1 Post
Default

1.) No.
2.) Start by reading this sticky. It should get you the basic knowledge that you are requesting, and you can go from there. https://ls1tech.com/forums/automatic-transmission/728728-commonly-asked-stall-transmission-related-questions.html
Please note, this is not a put off, it will just give you the basics so you can ask more advanced questions if need be.
3.) Depends on the power you are putting down, but a stalled motor will always beat the stock stall. As to which stall, depends on the motor.
Times will decrease, driveability will be minimally affected, mileage will decrease slightly. The price for performance, unfortunately.




All times are GMT -5. The time now is 05:14 PM.