Dana 20? T-case problems???
Thread Starter
|
Elder User
Joined: Dec 2002
Posts: 925
Likes: 0
From: Quaker Hill ,CT U.S.A.
Dana 20? T-case problems???
I have a 1975 F100, 360FE np435,with what looks like a dana 20 t-case.
My question is how does this case work is it a full time case. The front axel does have manualy locking hubs on it .
If I move the shifter forward the truck has 4wheel drive . If I shift it back it has two wheel drive . There is now differnce in road speed or engine rpm . Should this be a full time case with a low range or is this the correct way it operates ? I wonder if the original owner added the manual hubs due to automatic??? ones not working ?
any information would be extremly helpful
thanks ,Jon
1975 F100 360,np435
1988 F150 300,t18,bw1356
My question is how does this case work is it a full time case. The front axel does have manualy locking hubs on it .
If I move the shifter forward the truck has 4wheel drive . If I shift it back it has two wheel drive . There is now differnce in road speed or engine rpm . Should this be a full time case with a low range or is this the correct way it operates ? I wonder if the original owner added the manual hubs due to automatic??? ones not working ?
any information would be extremly helpful
thanks ,Jon
1975 F100 360,np435
1988 F150 300,t18,bw1356
Senior User
Joined: Dec 2001
Posts: 378
Likes: 0
Dana 20? T-case problems???
Jon
you do NOT have a full time case. What you have is a dana 21 unit. it has NO provision for a low range. it is either 4HI or 2HI. on the half ton series truck, they used this setup from 66 until 76? F250s were different in the sense that they used either a NP 205, dana 24 or a FULL TIME NP 203. I believe in the later years 77? the half tons might have used the 205/203's im not sure. BUT i AM sure that from 66-75, it was a single speed T-case on the 1/2 tons. I have this same exact setup on my 66 F100. I( did a conversion to a dana 20 T-case (has low range)--got it out of a 66 bronco--works really good ALTHOUGH the whole thing was a lil expensive with the adapter and all!
Hope this helps!!
regards
~~NUT~~
you do NOT have a full time case. What you have is a dana 21 unit. it has NO provision for a low range. it is either 4HI or 2HI. on the half ton series truck, they used this setup from 66 until 76? F250s were different in the sense that they used either a NP 205, dana 24 or a FULL TIME NP 203. I believe in the later years 77? the half tons might have used the 205/203's im not sure. BUT i AM sure that from 66-75, it was a single speed T-case on the 1/2 tons. I have this same exact setup on my 66 F100. I( did a conversion to a dana 20 T-case (has low range)--got it out of a 66 bronco--works really good ALTHOUGH the whole thing was a lil expensive with the adapter and all!
Hope this helps!!
regards
~~NUT~~
Thread Starter
|
Elder User
Joined: Dec 2002
Posts: 925
Likes: 0
From: Quaker Hill ,CT U.S.A.
Dana 20? T-case problems???
Thanks for the info . I intend to restore this truck back to its original condition so this is a big help . This truck will never see any offroading so i guess i dont need a low range thanks again
Jon
Jon
Thread
Thread Starter
Forum
Replies
Last Post
JRS75f100
1973 - 1979 F-100 & Larger F-Series Trucks
1
Jan 24, 2011 10:39 PM
bigoldblue
Clutch, Transmission, Differential, Axle & Transfer Case
7
Apr 6, 2007 05:58 PM
78fordman
Clutch, Transmission, Differential, Axle & Transfer Case
1
Sep 13, 2005 09:49 PM
