Shift points?
Thread Starter
|
Senior User
Joined: Apr 2005
Posts: 213
Likes: 1
From: Port Coquitlam, BC Canada
Shift points?
Anyone have any idea what the speeds are the tranny is supposed to shift at?
It is a 1977 F-250 Super Cab two wheel drive, 400 CI 6.6Litre, C6 tranny.
Just wondering if mine is shifting when it should, also want to try and adjust the band on it too.
It is a 1977 F-250 Super Cab two wheel drive, 400 CI 6.6Litre, C6 tranny.
Just wondering if mine is shifting when it should, also want to try and adjust the band on it too.
More Turbo
Joined: Nov 2007
Posts: 578
Likes: 12
There is no normal "constant" speed that any automatic transmission will shift at. It all depends on load on the engine. Its been like that since inception of the auto tranny.
There has to always be throttle position or some kind of engine power output feed back to the transmission control system, if it didn't have that and shifted too soon the engine could be lugged and forced into detonation. This is one of the reasons for an automatic transmission since most people are not engine savy and know how to treat the engine.
Also a reason lots of engines get goofed up, in manual vehicles.
There has to always be throttle position or some kind of engine power output feed back to the transmission control system, if it didn't have that and shifted too soon the engine could be lugged and forced into detonation. This is one of the reasons for an automatic transmission since most people are not engine savy and know how to treat the engine.
Also a reason lots of engines get goofed up, in manual vehicles.
Cargo Master
Joined: Jun 2003
Posts: 2,982
Likes: 7
From: Somewhere Saskatchewan
Normal shifting is considered.
Light throttle pressure.
Even road, no grade.
At sea level.
There is a variation of a few miles per hour to take into consideration other factors.
Load, grade, wind, axle ratio, wheel size all play a significant part.
As does condition of the engine.
Light throttle pressure.
Even road, no grade.
At sea level.
There is a variation of a few miles per hour to take into consideration other factors.
Load, grade, wind, axle ratio, wheel size all play a significant part.
As does condition of the engine.
Thread
Thread Starter
Forum
Replies
Last Post
cabinetmaker00
1999 - 2016 Super Duty
15
Aug 14, 2008 10:24 AM
funnyboy
Clutch, Transmission, Differential, Axle & Transfer Case
2
Sep 26, 2004 02:30 PM
snakeeyes
Clutch, Transmission, Differential, Axle & Transfer Case
10
Aug 12, 2003 05:55 PM
turbosek2
Clutch, Transmission, Differential, Axle & Transfer Case
1
Jul 20, 2003 05:18 PM
TrackStar
Clutch, Transmission, Differential, Axle & Transfer Case
9
Feb 11, 2002 08:45 AM
