Granny T18

If anyone is interested, a nice, short, bolt-in T18 can be created from a Ford truck T18 tranny and a Scout T18 tranny. You can often find incomplete trannies to create this guy. Use the Ford case and input shaft. This will bolt right to a 76 and up T176 bell housing and will only need a pilot bushing. Take the rest of the guts of the scout T18 and the adapter plate. Tap the adapter plate to the Ford case and the model 18 or 20 will bolt right up. You will then have a bulletproof tranny that is shorter (for driveline length) than a factory jeep T18 and has a lower granny ratio than the 4 to 1 Jeep case. Just a bit of old info if anyone is interested in garage mods.

 

Hi, your tip is true, but I will also mention that the IHC Adapters used on the later scout IIs do not have a transmission mounting pad on the base of them like the Jeeps and some scout 80/800 series trucks did, because the scout II t-18 cases had the mount cast into the base of the t-18, so some type of transmission mount will haved to be fabbed if doing this swap with a Scout II adapter.

Daniel

 

That's not entirely true. You are correct in the fact the T-19 adapter does not have the mount built into them and is on the trans case. However, the IH T-18 adapter does have the mount built into them. The only difference in the IH and Jeep adapter is the IH adapter clocks the transfer case up slightly over the Jeep adapter. The T-19 is a synchro'd first gear with three first gear options of 4.03-1, 5-1, and 6.32-1. most of the gears, case, output shaft, and as noted the adapter are different than the T-18. The main drive gear (input) can be used in a T-18 however. Nickmil.

 

Thank you, I stand corrected. I seem to remember that the t-18 adapters in the scout 80s and 800s to be the ones with the mount on the bottoms like the jeep t18 adapters, but that the t18s that were used in the first years of scout II production before the t-19 became available were different from the early 80/800 series scouts and more similar to the t-19 style adapters and mounting configuration. Can anyone else clarify this? It has me thinking now...
Daniel

 

Well, I've got about 10 of each type (cores) sitting in the shop at work right now. Jeep T-18's, Scout T-18's, Scout T-19's, and I think there are one or two Ford T-19's also. That's what I'm going by. That and having converted/built a couple of hundred of all types. If anyone has any new info it's certainly welcome! All the T-18's I've seen had the mount on the adapter. Doesn't mean there couldn't be an oddball out there though. I do know the stock adapters for T-18/T-19 won't interchange as the reverse idler shaft and counter shaft are in different locations on the T-18 versus the T-19. The aftermarket adapters account for this with a modified recess in the adapter so it will fit either. Nickmil.

 

That is how I remembered it also. Two holes in the bottom of the adapter plate. Also, I once found a T98 case that had a Chevy engine bolt up pattern and input shaft. Ever see one of those. Someone once said they put them in dumptrucks and school buses. CJ

 

It's very possible although I'd think they would have used the SM-420 or 465. I've seen some T-18's used in pretty strange configurations. I even know where there are a couple of prototype T-18's that are 5 speeds and 5th is overdrive! No they aren't for sale by the way. .
Nickmil.