C_Owens 1 #1 Posted September 16 I have a 73 4 speed no name. I have got a 8speed out of a 73 no name 12 i believe. It was at a scrap yard and i got it but the hood and the I'd tags were gone. Only thing that looks different is the axle width. My 4 speed has what looks like alot longer axles.. the donor had 2 pedals mine has 1. I got all the linkages and such. But would this be a direct replace. Will it need both pedals or just thr one like I have. Mower is used to pull plow and work garden. No Mower deck on it. But I am curious what is in store to do the transmission swap. I can provide any pictures if need be just tell me what you need... Share this post Link to post Share on other sites
ri702bill 8,316 #2 Posted September 16 Welcome! Look at the mounting of the brake band on both - I believe you will find they are quite different. The 4 speed band pulls from the top, the 8 speed from the bottom. I did an 8 speed swap on my 854 - uses only one pedal and required the brake rod from a Raider to make it work. Had to loose the parking brake, Lo renge in 1st is about as good! 1 Share this post Link to post Share on other sites
Ed Kennell 38,162 #3 Posted September 16 to the Is there a problem with the 4 speed? Share this post Link to post Share on other sites
C_Owens 1 #4 Posted September 16 4 hours ago, Ed Kennell said: to the Is there a problem with the 4 speed? Not really just want the slower speeds for what I'm using it for... 1 Share this post Link to post Share on other sites
C_Owens 1 #5 Posted September 16 6 hours ago, ri702bill said: Welcome! Look at the mounting of the brake band on both - I believe you will find they are quite different. The 4 speed band pulls from the top, the 8 speed from the bottom. I did an 8 speed swap on my 854 - uses only one pedal and required the brake rod from a Raider to make it work. Had to loose the parking brake, Lo renge in 1st is about as good! I see that now that u said it. If I understand what I've researched. I have a 5025 currently in it. And the 8 speed donor is a 5091. Share this post Link to post Share on other sites
Ed Kennell 38,162 #6 Posted September 16 2 hours ago, C_Owens said: just want the slower speeds for what I'm using it for.. Nuther option is a larger input pulley. Share this post Link to post Share on other sites
ri702bill 8,316 #7 Posted September 16 1 hour ago, Ed Kennell said: Nuther option is a larger input pulley. BUT... That gives you a lower range, slower ground speed ALL the time. No regrets having the 8 speed with the "magic" Hi-Lo lever... best of both worlds. 1 1 Share this post Link to post Share on other sites
C_Owens 1 #8 Posted September 17 I'm gonna run some atf through this 8speed and clean it up and flush it out good before I make my decision on the swap. The gear oil was milky and i drained it when 1st got it and refilled it to top with fresh fluid and its been sitting about 6 months now. I know it needs new axle seals and shifter boots. Got the seals at my local mom n pop auto parts store. Thanks to the cross ref# chart. Share this post Link to post Share on other sites
C_Owens 1 #9 Posted September 29 So I got very lucky in this swap I guess. The 8speed brake hook up and everything is exactly the same as the 4 speed. Only difference is hub to hub of 8 speed is 22 1/2in. The 4 speed is 26 1/2in Share this post Link to post Share on other sites
kpinnc 12,017 #10 Posted September 30 The 8 horse 4 speed tractors used 10-inch rear wheels with different offsets from the standard 12-inch wheels used on most models other models. That’s what the longer axles were for- proper wheel space at the transmission. A direct swap with an 8-speed will work. You just may have a couple things to work out. You can easily add spacers on the shorter axle tranny hubs to make up clearance. You can also likely swap brake linkages from the donor tractor to make up for the drum location change. Share this post Link to post Share on other sites
