8-speed fit B80?

[jdwheelhorse 0]

I want an 8 speed tranny to use for plowing in the winter mainly because of the Hi/Lo feature, but will it fit a 4 speed B80, in relevance to belt length and brake band matchups. ?

[KB9LOR 4]

If I remember a post from awhile back I believe it is a easy swap, I can't think of any reason why it would not bolt right up. Good luck!

[jdwheelhorse 0]

ok, thank you...if the shifters move is that the main thing i should be concerned with before i buy one? i dont want to split the case if i dont have to.

[KB9LOR 4]

ok, thank you...if the shifters move is that the main thing i should be concerned with before i buy one? i dont want to split the case if i dont have to.

I would say yes, when I got mine I checked it to see if it would move, but the friend I got it from said it was a good tranny also. Check for oil seal leakage also, where the axle meets the case, and for slop in the rear hubs.

[jdwheelhorse 0]

ok well the one im looking at has been sitting outside for a while seperated from the tractor...so im hoping the interior isnt rusted out. ill go look at it and hopefully will purchase it.

[Docwheelhorse 2,778]

8 Speed is not a direct bolt in... the brake drum is located in a slightly different spot... Also---there is no real use for lo range when plowing snow, snowblowing yes... but plowing snow you need some speed on your side to push the snow. Not neccesarily a ton of torque.

Tony

[jdwheelhorse 0]

how would one go about "fixing" the brake band issue?

[jdwheelhorse 0]

and other than the brake drum being diff. do the bolt holes match up?

[TT-(Moderator) 1,162]

The B-80 4 speeds use the 5084 Uni-Drive with the brake drum mounted to the countershaft - just like the "newer" 6/8 speeds. (1970 & up)

As long as you don't try to install a 5060 6 speed - which had the brake drum mounted to the reduction (pinion) shaft just like the early 3 speeds - it should be a very easy swap.