You may have seen the story of the parts truck that and I took apart - it was a 68 with a 360 and a T18. While cleaning up the tranny, I discovered the following on the top of the case:
H24 2
T18-148D

The tag reads C8T3AR-1

Can anyone tell me anything about the tranny? Close or wide ratio? I know it has a granny gear.

The transmission shifted fine before I took it out (the engine was not running, but I could shift the tranny and the input shaft and tailshaft spin freely).

I would also be interested in knowing what it might be worth - I would like to sell it, either stand-alone or with the flywheel, clutch, bellhousing, pedal assembly, steering column, etc as a kit for someone wanting to install a 4-spd setup.

Thanks for your help!

 

It's almost certainly wide ratio I would think. I don't think too many ford trucks came with a narrow ratio. MK

 

hello pward76 i am having a mechanic do a 330xd motor and allison 540 trans the mechanic is taking out the 390 and the t18 trans the engine is going to be destroyed because its not worth spending 1900.00 having it rebuilt the heads havt be modifed with hard seats and valves it should not cost that much to end up with 255 hp and 376foot lbs of torque the 330 gets it torque at a lower rpm so hope to get better mpg the bus weighs 11.500 lbs the truck should weigh 5000lbs
71 t18 gear ratios are first 6.37 second 3.09 third 1.69 fourth 1.1 reverse 6.37 where i live 352s 360s 390s dont exist in the junkyards

 

Ird56, where do you live? Just curious but how is it cheaper to rebuild a 330? Apparently you won't be replacing the sodium filled valves with the original style. Also what intake are you using? How do the 330 ports match up with the automotive style intake? Are they much smaller? Thanks

 

NM5K, my '67 T-18 seems to be close ratio. When I'm in 4th gear doing 65mph the motor is yelling at me probably around 3500-4000 rpm.

I ran my #'s and I have the dana 60 3:54 locking axle so I know its not rear end gear ratio thats keep it low.

pward76, on the top of my T-18 it says T98-148C and on the driver side of the tranny it says: T18-1

I wish we could find a site that has the different T18's and what the model #'s mean.

 

Ceetwarrior -
This site has some info that I think you will find interesting..

www.novak-adapt.com/knowledge/t18_t19.htm

 

try gear vendors they have a ,lot of info on t18s t19s my ford f250 with t18 trans and dana 60 3.73 locker did the same thing the rpms seemed high i got rid of the 30.975-16.5s and went to 225-75-16s it changed the final gear ratio to roughly 3.82 it helped a lot .f you go to 4lo.com it has calculators to figure out everything you can also download it to your favorites on your computer

 

NM5K, my '67 T-18 seems to be close ratio. When I'm in 4th gear doing 65mph the motor is yelling at me probably around 3500-4000 rpm.

4th gear is still 1:1 in either version. I have the specs for both types, but would have to dig them up. The close ratio doesn't start as low as the wide ratio. But both end up the same in 4th.
I don't think ford used too many close ratio T-18's. They were used in some other brands though. MK

 

Thats a sweet website pward76. Sounds to me like I want a t19. Do you know if the t19 uses the same bellhousing as my t18 for an FE? I didn't see it on that website.

willowbilly suggested me putting a t10 in my truck. Which one would work best?

 

I don't know, but I think it probably would bolt right up. You might ask in the transmission forum....

 

the t19 has a higher first if i think it is 5.49 other wise it bolts up to the same bellhousing for more info call trans matic in clovis new mexico the number is 1-800-634-8537 they have helped me a lot

 

I don't remember recommending a T-10, I think it was a T-85 that I talked about. A T-10 is a car tranny that Ford used through 63 in its cars and maybe for a few more years in the Mustangs and Falcons, but the Galaxys got the toploader in 64.

 

i was wrong the t19 first gear is 5.11 second is 3.03 third is 1.79 fourth is 1.00 i got the info from gear vendors their phone is 1-800 -999-9555 they sent me a free catalog also try advance-adapters 1-800-350-2223 they have more information on t18s and t19s also if any one needs information on how to figure uot how to figure out speedo corrections to tire diamater go to 4lo.com you can put it in your favorites on your computer

 

willowbilly, I still have the email where you said t-10. You musta been spacing it or somethin'.

So, if I want a true 4-speed and not this granny tranny stuff a t19 is the way to go?

 

Well after 1000 posts a guy does forget. I was thinking of a more recent thread. I don't know anything about the T-19 but with 5.11 first gear that still sounds like a granny tranny. While the truck type trannys are way tough and have their place you are still driving a 3 speed under most circumstances since you will seldom use first. If you do much city driving I think you would be happier with something else. And also for towing the gears are a long way apart on the T-18 and the NP 435. The T-10 is a true 4 speed.