What tranny do I have?

jharlan68

I have a 360 with a three speed tranny in my 75 CJ5. I'd like to swap for a 4 or 5 speed. How do I find out which tranny I have and what would be a suitable swap?

dbesade

If its a stock V8 CJ5 its probably a T150. You can swap in a T18a/b 4 speed from another CJ.. or find a ford T18 and do the swap. my 2 3/4¬¢ -Dave

jharlan68

The motor is a donor from a '78 Wagoneer. Is the same swap possible? :-|

KEV

Your 75 might have a T15 also. 4 spd swaps T176 T18 T19 NP435 SM420 SM465 The T18/dana 20 and T176/dana 20 or dana 300 could be found in the CJ. 5 spd swaps NV4500 T5 Clark The T5/dana 300 came in the CJ but dosen't have a good rep as a strong trany. I'm an auto guy so I don't have a lot of seat time with any of these combos. However I'm planing to swap in a 225 V6/T18/dana18 w/overdrive and PTO in my 63 CJ5.

tufcj

I believe Kev is right. If stock, it would be a T-15. The T-150 was used 76-79.

For 4 speeds, a 76-79 CJ T-18 is the only direct bolt in (but driveshafts would have to be changed). A Ford 2WD T-18 or NP435 will bolt to the bellhousing, but will need and adapter for the t-case. Anything else will need an adapter on both ends.

The T-5 or T-176 would bolt in if you use a 1980-1986 CJ bellhousing and the Dana 300 t-case (probably some crossmember and driveshaft mods), but like Kev said, the T-5 isn't known for its durability.

It really depends on if you need a granny gear or overdrive.

This might help. If you click on the trans, most show a pic.

http://www.offroaders.com/tech/jeep/transmission-factory.htm

Bob
tufcj

jharlan68

I need the overdrive more than the granny. It's gonna be pretty much a daily driver.

tufcj

An early Dodge NV4500 would give you both the granny low and OD. Unfortunately, with the required adapters, it may be too long for a CJ5.

For an OD, the T-5 may be your best bet, not the best tranny, but I've seen them live behind a stock 360, as long as you don't get stupid with the skinny pedal. No burnouts, high rev shifts, etc.

You might check the tech areas at both www.advanceadapters.com and www.novak-adapt.com

Bob
tufcj

jharlan68

Thanks, Bob. I don't plan on doing anything too crazy with it,so the T-5 might work thanks for the info.

Mudrat

jharlan68 wrote
Thanks, Bob. I don't plan on doing anything too crazy with it,so the T-5 might work thanks for the info.

I didn't either when I bought a new T-5, but I don't think it will hold up behind my 360 or in front of the 4.56 lockers. Mud, rocks and skinny pedal and hunting in the mountains :-| :?: So I picked up a 727 to rebuild and stick in there and am trying to get the 4:1 kit in the D300 (but it's giving me problems)

Baxter

how do you like that t-150? those things are the biggest turds they ever put behind a jeep motor.i went through 5 of those things before i got some brains and said that's enough. i think i could wipe out the front inpute shaft out on demand. good choice to get rid of that thing.

Mudrat

Baxter wrote
how do you like that t-150?

Never been stressed :wink: Just know the tranny won't hold up to 400+ HP :!:

tufcj

I broke 3 T-150s behind my mildly built 304 before I went to the 360/T-18 combo. In mine it always took the teeth off 2nd gear and the cluster. The 2nd time it broke, it was my daily driver, and I was committed to make about a 400 mile road trip, leaving the morning after it broke. Made the whole trip with teeth missing, shifting from 1st to 3rd. 111!!! 111!!! Bob tufcj

jharlan68

hmmm...looks like a tranny swap might be in order before too long. Y'all have any ideas what would be the easiest swap behind that 360?

gschuld

I guess I've just been lucky, I have been running a t-150 in my 76 cj-5 for 10 years. I've been through 2 304s before dropping in a warmed over fresh 360 with pocket ported 291c heads, 268h cam, performer intake, holley 750, etc with a the stock dana 20 and dana 44 rears with 4.10 gears with 33/12.5/15 BFG A/Ts. I've driven it like I stole it for years, that tranny same still shifts great. In fact I have two more t-150s as spares, just never needed them. Funny thing is that I have a nice t-18 that I have been saving 'just in case' the 150 blows up, it just hasn't happened yet :shock: . George