Duff 206 #1 Posted January 17, 2012 I know I've seen this touched on in various posts in the past, but can someone give me a quick down-and-dirty on the differences, if any, between the bare frames of the 300-400-500 series machines - not the stuff that gets bolted to them, just the bare frames? Thanks very much! Duff :thumbs: Share this post Link to post Share on other sites
Sparky-(Admin) 23,277 #2 Posted January 17, 2012 I didn't think there was a difference Duff . Even the 520 with the swept front axle is the same frame as far as I know. What are you up to? Mike.............. Share this post Link to post Share on other sites
Kelly 1,033 #3 Posted January 17, 2012 the newer 520's have a few extra holes, but other than that I can't think of anything else. Share this post Link to post Share on other sites
AMC RULES 37,211 #4 Posted January 17, 2012 Is there a project in the works Duff? :dunno: Share this post Link to post Share on other sites
Duff 206 #5 Posted January 18, 2012 Is there a project in the works Duff? Well.....let's say it's in the "thinking about" stage. Got a bunch of parts kicking around and am scratching my....head....over what to do with them.... Stay tuned! ...and thanks very much for the quick replies! Duff :thumbs: Share this post Link to post Share on other sites
tunahead72 2,553 #6 Posted January 18, 2012 Hey Duff! I know next to nothing about these frames, but I can give you a partial answer. My parts/service manual for the 1986 300/400 series tractors shows the SAME frame (part no. 110648) for everything from the 308-8 to the 420-LSE, 8-speeds and automatics alike, and everything in between. That doesn't mean all the 300/400/500 frames are the same, of course, but it's a start. Hope this helps. Share this post Link to post Share on other sites
Kelly 1,033 #7 Posted January 18, 2012 I think you will find any frame back to about 78 will be about the same, with very minor changes. Share this post Link to post Share on other sites
