what transmissions can fit on a 345?

[sua sponte]

Im gonna be looking to upgrading my tranny I dont know what I got on it right now but I would like to put or even rebuild the one I have on there righ now, but I dont know of any one around my parts that can do the work of rebuilding this engine. Im running a 345 with a 4 speed tranny and 205tc. What would be compatible? Thannx

 

[Chris Pucci]

What vehicle are you putting this in?

 

[MarkO]

With enough time and $$$ you can get just about anything to match up and work properly.

The question comes down to what vehicle you have and what you intend to do with it.

If you currently have an automatic you can easily upgrade to a GM overdrive automatic with an adaptor from IHOnly.

If you have a manual, upgrading to an overdrive can be accomplished but it isn't going to be cheap or easy.

Whatever you do, the cost is going to start at a few $$$ to several thousand $$$.

So you have to ask yourself, how much is the swap worth to you?

 

[Michael Mayben]

im gonna be looking to upgrading my tranny I dont know what I got on it right now but I would like to put or even rebuild the one I have on there righ now, but I dont know of any one around my parts that can do the work of rebuilding this engine. Im running a 345 with a 4 speed tranny and 205tc. What would be compatible? Thannx

A four speed inna Scout with a np 205 transfer case??? Ya sure??? A 205 is about twice the physical size of the d20 a Scout or Scout II came with, along with being twice the weight and must "hang" from an overhead crossmember if oem.

If it's a married 205, then the tranny came from a Ford app (t-18 or t-19) and had the input shaft converted to the IH pattern. Many fullsize fords (and dodges use a married np 205. And it's had extensive modifications performed to mount a married 205 setup!

Only IH fullsize stuff came with divorced np 205 oem, and could have had a four speed or one of several five speed trans.

If you are contemplating a changeover to a more modern transmission (such as nv4500 or 4l60), then yes, that can be done if your budget is large enough. We have the adapters and other items needed to do that on the shelf.

But a four speed warner gear t-18 (non-syncro first gear) or a t-19 (synchro first gear) is a bulletproof box that was oem in the Scout/Scout II platforms, those use an adapter on the rear to mate to the d20 transfer case in a married scenario. Same for an "adapter" on the back of a t-407/tf727 automatic marrried to a d20.

Figgr out whatcha got now and then git back to us!

 

[sua sponte]

Hey michael I got a quick question so it could help me/us out on whats under there! What disstinctions would I look for to find out what I got under there. On the trasfer case and transmission?

 

[Michael Mayben]

If the vehicle under discussion is a Scout II, then the original setup if a four speed would be a warner gear t19 witha married Dana 20 transfer case. If it's a Scout II from the first production year, we refer to those as the "810" model and it could be a t18 with d20.

Married transfer case means it's bolted directly to the adapter housing on the back of the transmission.

A divorced transfer case means it's separate from the transmission and connected by a really short drive shaft. No Scout II had a divorced transfer case from the factory.

If the transfer case is aluminum, and the control for it is a push/pull knob on the dash, then it's a chain drive single speed case, mounted behind a three speed transmission (warner t90 moist likely).

Both the transfer case and the transmission originally had metallic "tags" under a bolt head somewhere with an IH code number and part number, if you can find those tags, post the numbers and we can decode 'em for ya.