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I bought a 1977 F600 with a Clark 5 speed direct transmission. There is a mangled tag on the side of it that says 282V 55. I've read what I can find about the 282V and 285V and mine doesn't seem to have any of the idiosyncrasies the 282V was known for.
From what I've read, the shift patterns on 282V's are weird like this
R | 2 | 5
1 | 3 | 4
or
1 | 2 | 4
R | 3 | 5
Mine is a pretty normal pattern with
R | 2 | 4
1 | 3 | 5
Also I've read the 282V has a short 4th (6.99, 4.09, 2.17, 1.17, 1.00) where you have to shift 4L 5L 4H 5H. The 285V has a more normal spread (6.99, 4.35, 2.25, 1.45, 1.00). I don't have a tachometer to really compare mph and rpm to verify, but the way it shifts feels a lot more like the 285V gear spacing. If it matters, my rear axle is 8.12 and 5.83.
I would be interested to know if anybody has some more information about this transmission like confirmation of its gear ratios and whether I should be doing the 4L 5L 4H 5H shift pattern.
(I came here via a DDG search for, "Can I replace a Clark 282V with a 285V?)
Well. In my '73 F600 I have a 282V36 :
The tag is high on the passenger side of the trans, toward the rear. I do have to shift 4L 5L 4H 5H; it's really obvious if I try to shift 4H 5L that it's wrong (engine RPMs are wrong, I mean). My truck has 6.17 / 8.58 rear axle ratios.
From what I can tell, the numbers after 'V' indicate trans ratio options. My trans' 3rd gear syncrhos are shot -- it's double-clutch or float every shift into/out of 3rd -- and I have a hankering to swap out the trans . . . maybe. I don't drive the truck all that much.
You might post this question over in Large Trucks, though there are probably only a couple of dozen regulars there. These days, I'm one.
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