c6
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Automatic transmissions
1983-1988 with C6
1989 and up with E4OD
Thats the general rule at least. There are reports of the C6 being a option after 1989 for another few years.
Manual transmissions
1983-1987 with T19 4 speed manual
1987 and up with ZF 5 speed manual
In theory this means that its possible to find a 6.9 powered truck with a 5 speed behind it for the 1987 model year. I know of at least one member that is actively looking for one of that year. Again, its possible to still find the odd truck after 1987 that still has a 4 speed manual.
1983-1988 with C6
1989 and up with E4OD
Thats the general rule at least. There are reports of the C6 being a option after 1989 for another few years.
Manual transmissions
1983-1987 with T19 4 speed manual
1987 and up with ZF 5 speed manual
In theory this means that its possible to find a 6.9 powered truck with a 5 speed behind it for the 1987 model year. I know of at least one member that is actively looking for one of that year. Again, its possible to still find the odd truck after 1987 that still has a 4 speed manual.
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