C6 Transmission
Thread Starter
|
Freshman User
Joined: Oct 2002
Posts: 45
Likes: 0
From: Bremerton, WA
C6 Transmission
I have a '68 F100 with a 360/C6 and 3.54 rear axle. It seems that the transmission shifts really early (2nd at approx. 20mph) and (3rd at approx. 30 or lower sometimes right behind 2nd). Is this normal for my setup or is there a way to adjust for slightly higher shift points?
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
C6 Transmission
There is a screw in the modulator on the tranny. Just pull the rubber hose off and you can turn it by 1/2 turns until you get it where you like it. Just keep a log of your turns so you can go back, or go the other way if you need to. Beware of the hot exhaust pipe whe adjusting after a test run. 
http://www.clubfte.com/users/jowilker/USFlag.gif
John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member 0004 since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
http://www.clubfte.com/users/jowilker/USFlag.gif
John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member 0004 since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
Post Fiend
Joined: Feb 2000
Posts: 5,130
Likes: 8
From: Brea CA
C6 Transmission
Here's your shift speeds for a 3.54 ratio with a 31" tall tire:
Part throttle
1-2 shift @ 6-8 mph
2-3 shift @ 6-17 mph
To kickdown detent
1-2 shift @ 25-37 mph
2-3 shift @ 46-62 mph
Through detent (W.O.T.)
1-2 shift @ 33-41 mph
2-3 shift @ 61-70 mph
This is out of the '68 Shop Manual.
Barry
Part throttle
1-2 shift @ 6-8 mph
2-3 shift @ 6-17 mph
To kickdown detent
1-2 shift @ 25-37 mph
2-3 shift @ 46-62 mph
Through detent (W.O.T.)
1-2 shift @ 33-41 mph
2-3 shift @ 61-70 mph
This is out of the '68 Shop Manual.
Barry
