Posted by Desoto61 [138.162.0.41] on Friday, March 27, 2015 at 06:41:05 :
In Reply to: Increase road speed posted by Mark Race [24.165.195.136] on Thursday, March 26, 2015 at 17:41:39 :
As other's have said an Overdrive trans is you best option, but it will almost have to be a whole transmission. I don't think most OD units available will fit between the trans and t-case.
I would start looking for an SAE adapter for it first. They are the most likely to be available and then can be adapted to a lot of different options, but I'd really be looking for a Spicer 5-speed OD tranny. I think they use an SAE3 housing, and have been used in diesel swaps before. For a while someone was making a 0.69:1 OD gear for them which would probably be about perfect IMO. It's a heavy trans, but small and fits in front of the t-case in the 4BT swaps.