I Do This For The Glory
Join Date: Dec 1999
Location: Nobleboro, Maine
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Re: how do i identify what transfer case i have
If the tailhousing cone on the transfer is cast iron, then it's a D20. If it's aluminum then it's a D300. If it's offset to one side then it's probably a D18. If it is a NVG or NP, then it probably has the tag still on it, round and towards the front of the case.
If you have the 304 and 3 speed, then it's probably a D20 transfer, as they would have just swapped the whole works into the '86 Jeep. No jeeps came with a 3 speed in the 80's, at least from the factory.