I need some information about a Clark 285V 5 speed overdrive transmission.

I have installed one in my Jeep CJ 7 and I need some details.

 

Interesting transmission. Should be a bunch of fun with that 6.99:1 super low first gear.

Did you have a specific question regarding it?

 

first of all can you help me identify it? I can email a picture to you of it installed in my Jeep Chassis. My first question was gear ratios, I was told that 5th was OD.


jbelfiore@mercuryinsurance.com


email me for picture. thanks a bunch.

 

1st = 6.99:1
2nd = 4.09:1
3rd = 2.24:1
4th = 1.46:1
5th = 1.00:1
reverse = 5.89:1

You have to have a 280 VO or 280 VOHD to get the .80:1 overdrive.
Couple of the 300 series clarks have an even lower first gear and a .80:1 overdrive.

Jeeps are light. With a low gear kit in the case, and that super low first gear, you could get away with a reasonable gear set in the axles and still have a fantastic crawl ratio and a reasonable highway ratio.
Should not have any troubles, even if the trans you have is technically not an OD unit.

 

How do I know fro sure which one i have.? these is no metal tag. i was told it was an overdrive trans. What about the shift pattern?

 

Overdrive will hook from 3rd to 4th them it gets pushed up into fifth/OD. I have an OD one with a custom input shaft, the same as 1 ton and down Chevy stuff.
Later willis

 

I believe that my input shaft is a chevy also. the throw out bearing diameter is like a chevy. Do you know of anyone who sells these? Still not clear on the shift pattern.

 

Are you trying to bolt it to a Chevy motor?
Willis

 

No its already bolted to an AMC JEEP 401 V8