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Old 01-13-2020, 06:54 PM   #1
Jackrabbit 366
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Clark 5 speed Trans OD

Does the Modle number on this tag mean this trans is OD
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Old 01-13-2020, 08:20 PM   #2
C10 - C90 Bill
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Re: Clark 5 speed Trans OD

Not sure, but do you know the Shift Pattern?
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Old 01-14-2020, 03:25 PM   #3
Jackrabbit 366
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Re: Clark 5 speed Trans OD

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Old 01-14-2020, 03:40 PM   #4
C10 - C90 Bill
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Re: Clark 5 speed Trans OD

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.
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Old 01-14-2020, 05:05 PM   #5
Bigdually
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Re: Clark 5 speed Trans OD

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
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Old 01-14-2020, 08:03 PM   #6
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Re: Clark 5 speed Trans OD

Quote:
Originally Posted by Bigdually View Post
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.
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Old 01-15-2020, 12:42 AM   #7
Jackrabbit 366
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Re: Clark 5 speed Trans OD

Thanks you all for your reply
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Old 01-16-2020, 03:48 PM   #8
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Re: Clark 5 speed Trans OD

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
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Old 01-16-2020, 04:16 PM   #9
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Re: Clark 5 speed Trans OD

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.
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Old 01-17-2020, 10:27 PM   #10
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Re: Clark 5 speed Trans OD

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

After looking at your shift pattern I don't believe it's any of those either
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Old 01-18-2020, 01:10 PM   #11
1976gmc20
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Re: Clark 5 speed Trans OD

Quote:
Originally Posted by Jackrabbit 366 View Post
That's the shift pattern on the five speed that was in IH Loadstar trucks and busses, FWIW.
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