matt monte 230 #1 Posted 1 hour ago Can anyone advise if a transmission from a 657 would be a direct bolt in swap for my 4 speed in my b80? There is a parts 657 tractor being sold locally for cheap on MP. Before i make an offer and drag this home i figure ill ask the experts. The brief AI research of course gave me conflicting answers. Reason for swap is last snow we got i cracked the hub. Upon further inspection the woodruff keyway was wallowed out causing damage to axle. I might eventually repair the transmission but its very low on the things to do list. The B80 is a 3rd string backup to my 312-8 & 308-8. If it does, great ill make an offer, if not ill wait for something local to pop up. I dont mind some fabrication but didn't feel like getting involved in hub removal right now, done it a few times, always an unpleasant experience. Thanks in advance for any input regarding. Share this post Link to post Share on other sites
ri702bill 11,031 #2 Posted 1 hour ago You have an early B80 with a 4 speed. Yes the 657 4 speed should bolt right in. Other options include going with a Raider 6 speed (easy swap with some mods) or an 8 speed like in your 300 series (a bit more work) My... 1 Share this post Link to post Share on other sites
ebinmaine 76,683 #3 Posted 1 hour ago 657 has a 3-speed. That is NOT a direct swap for your mid-70s tractor. You have a 4 speed. The brake drum is in a different location and the brake linkage pulls from a different direction. 1 Share this post Link to post Share on other sites
ri702bill 11,031 #4 Posted 1 hour ago I stand corrected. But, if the 657 is complete & runs, why not?? 1 Share this post Link to post Share on other sites
ebinmaine 76,683 #5 Posted 1 hour ago Just now, ri702bill said: I stand corrected. But, if the 657 is complete & runs, why not?? You can make it work but only with one pedal. The B and C Series from 1974 up had two pedals. To put an early transmission into a later tractor you are far better off to swap over the entire transmission tunnel so the linkage is all there and correct. Having tried this a couple times I'll very likely never do it again. To get a two pedal tractor back up and running again your best bet is to wait for a correct four-speed or any of the eight speeds. 1 Share this post Link to post Share on other sites
matt monte 230 #6 Posted 21 minutes ago its appears complete with some aftermarket honda engine attached, no clue if that runs. However i could just swap my kolher 8hp over to the 657 and use that which would be easier to do then swapping trans, no? I agree i wouldnt swap trans only to not have correct linkage ready for brake etc. Its on MP in NJ no clue how to link ad to this thread. I appreciate all the feedback Share this post Link to post Share on other sites
