4R100
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Posting Guru
Joined: Jun 2007
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From: OAHU,KANEOHE HAWAII
4R100
Are all 4R100 trans from a SD diesel the same? My friend has one sitting in his shop and he said i can use that one to get rebuilt and give him the one in my truck so that we can just swap it out in one day.
Posting Guru
Joined: Dec 2003
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From: NW Arkansas
Correct. Iirc the differences in the tails have to do with the number of splints on the tcase shaft.
I was told the 4r100 gasser tranny was stronger b/c of the beefier shaft.
I was told the 4r100 gasser tranny was stronger b/c of the beefier shaft.
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Joined: May 2004
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From: Central Coast of CA
The Gen 2 Lightnings have the same internals used in the diesel 4R100's.
Stewart
Posting Guru
Joined: Dec 2003
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From: NW Arkansas
Know anything about the rear shafts between the two Trannys??
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Super Moderator
Joined: May 2004
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From: Central Coast of CA
Nope. It wasn't something we discussed on the Lightning boards I used to be a part of years ago. 
Stewart
Stewart
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More Turbo
Joined: Feb 2004
Posts: 643
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From: North Branford
All gas and diesel 4R100s use the same tailshaft.
Cargo Master
Joined: Apr 2009
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From: Man Cave
You also have PTO and non PTO versions. Here in AUS they are mainly the PTO version. JW told me you cant put a non PTO version into a PTO truck. Different gears and sensors apparently.
This cover plate indicates PTO version
This cover plate indicates PTO version
