66 Cj5 Transmission

So here’s the story... I bought a 66 cj5 with dauntless V6 at an auction this summer because the price seemed right and it was a surprise for my wife who had been wanting a Jeep because her father was big into Jeeps and we lost him to pancreatic cancer a few years ago. Once I got it home and started tearing into it the t14 trans and Dana 18 transfer case had been removed disassembled and left in boxes in the back to get wet and rusty. I’m located in Montana and can’t seem to find a useable t14 in this corner of the country that doesn’t need rebuilt or that they don’t want a arm and a leg for. The motor runs good but now I’m not sure what route to go. Was hoping not to spend the money on a total rebuild of my rusty junk trans and transfer case so starting to think for that kind of money what about conversions. Any suggestions or hints would be greatly appreciated since I’m really starting to scratch my head

 

Are you sure the transmission is a T14? A 66 would have had a T86AA from the factory. Any of the D18 large index transfer cases should work but the main drive gear will depend on whether the transmission is a t86AA (6 spline) or the more scarce T14 (10 spline).

Welcome aboard!!

 

That’s what I thought too from my research. I’m open to anything that will work relatively easily and not cost a fortune. Thank you!

 

How much is an arm and a leg? I wonder what you expect to pay to fix this Jeep, and whether your expectations are realistic. I'd guess you bought it cheap for this among other reasons. You can buy a complete T-14 from Herm. T-14 Transmissions | Herm The Overdrive Guy Reasonable, considering your options. If you can put the broken T-14 together, you could use it as a core.

Also, I suspect this is not a '66 Jeep, since it's the wrong transmission for that vintage. Jeep did not put the year of manufacture in the VIN until 1972. Just because the Jeep was titled in 1966 does not make it a 1966 model.

If you want to convert, the truck 4-speeds are a popular conversion. But I can't imagine that you'd save any money converting to a different transmission rather than repairing what you have. Lots of info on the Novak pages Novak Conversions Home and a recent post about these transmissions: Truck 4-speed Transmissions As I Understand Them

The T-15 transmission is a stronger 3-speed that was used in Jeeps too, and I would consider that an upgrade from the T-14. This is maybe the easiest/cheapest upgrade, but again, I can't see this costing less than what you'd pay for a replacement T-14.

 

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Thank you for your response. Herm is pretty reasonable for a complete rebuilt trans. I’m just trying to get the Jeep going at the moment so a usable used unit would be ideal. I found a serial number lookup at one point of my research and it said 66 but the trans must have been swapped in at some point