Clark 5 speed Trans OD

[Jackrabbit 366]

Does the Modle number on this tag mean this trans is OD

[C10 - C90 Bill]

Not sure, but do you know the Shift Pattern?

[Jackrabbit 366]

[C10 - C90 Bill]

Not familiar with that one.

The Clark in my '62 was:

2 4 R
--N--
3 5 1

It was not an OD.

Along with a 2-Speed Rear, the Shifting Sequence was:

1L
1H
2L
2H
3L
3H
4L
5L
4H
5H

But, the Trans in my '67 was like your picture above, but I never knew what kind of Trans it was. Had the same Shifting Sequence though, and was also not an OD. Could have been a Clark, possibly.

[Bigdually]

From what I understand about those, that's a direct 5 speed, no OD. I think the OD models were denoted with a "VO"

I'm sort of hunting for a Clark 5 like that one, I need a gear that's slightly underdriven in my truck but not as deep as 3rd is on my Muncie

[factorystock]

Originally Posted by Bigdually

From what I understand about those, that's a direct 5 speed, no OD. I think the OD models were denoted with a "VO"

I agree VO would be an overdrive. What I like most about the truck OD's, is the .80 range overdrive, instead of the typical light duty pickup OD's in the .70 range.

[Jackrabbit 366]

Thanks you all for your reply

[GMC 72 4X4]

The Clark transmission model you should be looking for is a 280ovo. There was a article about this swap into a square PU several years ago, I think the article was in 4 wheel and Off Road but I don't remember for sure

[Campbel45]

Not a clark, but here is a medium duty overdrive transmission that would be easy to swap if you dont need PTO...https://www.fourwheeler.com/how-to/t...-transmission/

They have pto's out there but theyre costly.

[Pvmt-Pndr]

https://www.chevyc60.com/the_transmission_page.htm

After looking at your shift pattern I don't believe it's any of those either

[1976gmc20]

Originally Posted by Jackrabbit 366

That's the shift pattern on the five speed that was in IH Loadstar trucks and busses, FWIW.