4 spd transef case
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Posting Guru
Joined: Nov 2006
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From: Riverview, FL
4 spd transef case
Years back I met a guy that had a 73-79 style f250/350. He had a transfer case in that had 4H-2H-N-2L-4L, he called it a 4spd case. Is this a rare option or what? I have never seen it again after that night.
Cargo Master
Joined: Jun 2003
Posts: 2,982
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From: Somewhere Saskatchewan
They all have that.
4H is 4 wheel drive in High range.
2H is 2 wheel drive in High range.
2L is 2 wheel drive in Low range.
4L is 4 wheel drive in Low range.
Manufacturers don't use that terminoligy anymore.
4H is 4 wheel drive in High range.
2H is 2 wheel drive in High range.
2L is 2 wheel drive in Low range.
4L is 4 wheel drive in Low range.
Manufacturers don't use that terminoligy anymore.
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Posting Guru
Joined: Nov 2006
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From: Riverview, FL
I know what the terminology is for everything. What I am saying is that his had 4h-2h-n-2l-4l, my 205 only has 4l-n-2h-4h. His accually had a setting for 2L, and I am trying to find out if they can be found.
Post Fiend
Joined: Jul 2006
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Most cases can be modified for 2wd low range. Most guys just select 4wd low range and not lock the hubs giving it only low range to the rear wheels.
A shifter would have to be midified to accomodate this, but I really can't recall any
2-speed, not 4 speed like you mentioned, (only high, and low range = 2 speed), that was born with the ability to select 2wd low. Most shifters had a saftey lockout to prevent this.
205 transfer e easily modified, and as long as we are talking about modified 205's, one could be modified to not only have selectable low, and high ranges, they can be modified for front wheel drive, rear wheel drive, and all wheel drive in either low, or high range.
I believe your buddies truck simply had a modified shifter to allow 2wd low.
A shifter would have to be midified to accomodate this, but I really can't recall any
2-speed, not 4 speed like you mentioned, (only high, and low range = 2 speed), that was born with the ability to select 2wd low. Most shifters had a saftey lockout to prevent this.
205 transfer e easily modified, and as long as we are talking about modified 205's, one could be modified to not only have selectable low, and high ranges, they can be modified for front wheel drive, rear wheel drive, and all wheel drive in either low, or high range.
I believe your buddies truck simply had a modified shifter to allow 2wd low.
Mountain Pass
Joined: Dec 2005
Posts: 206
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From: Dover AFB / Harrisburg PA
No, 4H-2H-N-2L-4L is the pattern for the NP203. Common 70s full time four wheel drive transfer case used by ford, chevy, and dodge.
When not in either locked positions, power is sent fore and aft like AWD systems of today for normal paved road driving allowing for the axles to spin at different speeds while making a turn. However when you need both axles pullin hard, lock into low at either speed desired.
Really neat and beefy case to have.
75F350s comments are all correct and the 205 can be modified, but I bet a doughnut your friend had a stock NP203.
Adrianspeeder
When not in either locked positions, power is sent fore and aft like AWD systems of today for normal paved road driving allowing for the axles to spin at different speeds while making a turn. However when you need both axles pullin hard, lock into low at either speed desired.
Really neat and beefy case to have.
75F350s comments are all correct and the 205 can be modified, but I bet a doughnut your friend had a stock NP203.
Adrianspeeder
Post Fiend
Joined: Jul 2006
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The 203 was a full time unit but it did not offer 2wd at all. It had low, and high, and it had hi-loc, and lo-loc. The "loc" locked the differential in the case to apply power equally to the front axle, and the rear.
You mentioned that the 203 was a "full time" unit, and that is correct. It would be impossible for a full time 4wd unit to have 2wd. A case with 2wd would not be "full time" it would be part time. That is why companies make part time kits for the 203. This makes it possible to run in 2wd. A "full time" case never had this option, it was always in 4wd.
The 203 shift pattern only included 4-hi, with or without loc, and 4-lo, with or without loc. It never had a 2wd option , so 2wd lo was not possible at all with a factory shifter.
You mentioned that the 203 was a "full time" unit, and that is correct. It would be impossible for a full time 4wd unit to have 2wd. A case with 2wd would not be "full time" it would be part time. That is why companies make part time kits for the 203. This makes it possible to run in 2wd. A "full time" case never had this option, it was always in 4wd.
The 203 shift pattern only included 4-hi, with or without loc, and 4-lo, with or without loc. It never had a 2wd option , so 2wd lo was not possible at all with a factory shifter.
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Mountain Pass
Joined: Dec 2005
Posts: 206
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From: Dover AFB / Harrisburg PA
Ahh good catch, I had just direct copied from above. The correct pattern is...
Lo-Loc
Lo
N
Hi
Hi-Loc
Adrianspeeder
Lo-Loc
Lo
N
Hi
Hi-Loc
Adrianspeeder
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