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Livrat · 12-05-2011, 11:58 PM

Sorry to say that there are no overdrive trannys that will work without major modifications,
A the only non computer GM overdrive is a 700R4 and it is longer than your T350 which means, moving the transfer case and crossmembers rearward, then you have to deal with shifter issues, it will also need a longer front drive shaft and a shorter rear one,,
Or another way is to move the engine forward, but then you have to drill holes for the engine crossmember, do exhaust mods, change to a different fan shroud, move shift linkage etc.
OR go with a Gear vendors overdrive unit which bolts to the rear of the transfer case, the only real modication is a shorter rear drive line and adding a few wires, but it is the most expensive method.

12-05-2011, 11:58 PM	#2
Livrat Member #1049 Join Date: Jun 2000 Location: Troy Montana Posts: 3,940	Re: Transmission swap Sorry to say that there are no overdrive trannys that will work without major modifications, A the only non computer GM overdrive is a 700R4 and it is longer than your T350 which means, moving the transfer case and crossmembers rearward, then you have to deal with shifter issues, it will also need a longer front drive shaft and a shorter rear one,, Or another way is to move the engine forward, but then you have to drill holes for the engine crossmember, do exhaust mods, change to a different fan shroud, move shift linkage etc. OR go with a Gear vendors overdrive unit which bolts to the rear of the transfer case, the only real modication is a shorter rear drive line and adding a few wires, but it is the most expensive method.