{"id":18352,"date":"2025-01-31T09:23:58","date_gmt":"2025-01-31T09:23:58","guid":{"rendered":"https:\/\/pro-truckdrivers.com\/blog\/mack-transmission-and-rear-axle-combinations-truckersreport-com-trucking-forum\/"},"modified":"2025-01-31T09:23:58","modified_gmt":"2025-01-31T09:23:58","slug":"mack-transmission-and-rear-axle-combinations-truckersreport-com-trucking-forum","status":"publish","type":"post","link":"https:\/\/pro-truckdrivers.com\/blog\/mack-transmission-and-rear-axle-combinations-truckersreport-com-trucking-forum\/","title":{"rendered":"Mack transmission and rear axle combinations | TruckersReport.com Trucking Forum"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div id=\"\">\n<p>\t\t\t\t\tI&#8217;m looking at a Mack  tri-axle dump truck that I am considering purchasing.<\/p>\n<p>My understanding is that for certain trucks they had rear axles with super low gearing.<\/p>\n<p>But not exactly sure with the ratio is but it&#8217;s got to be somewhere between mid-fives up to seven.<\/p>\n<p>These trucks used the T2060 transmission, because it has a .60 Overdrive, and even at that they really only did maybe a little over 60 miles per hour, from what I understand.<\/p>\n<p>Originally the truck had a 300 and it was set up this way. It now has a 350 in it.<\/p>\n<p>My question is, I have a few options with this gearing.<\/p>\n<p>Option 1:<br \/>Change the rears to something like a 4.17 or a 4.42.<\/p>\n<p>Is there a way to remove them from under the truck, or do they have to slide out from between the frame rails?<\/p>\n<p>I would be able to use any Fuller transmission.<\/p>\n<p>Option 2:<br \/>They apparently installed an 8ll without realizing the rears were geared so low.<\/p>\n<p>This transmission is in good shape.<\/p>\n<p>If I used that transmission, I would need to use some kind of an auxiliary transmission for the additional overdrive needed. I also have a few other Fuller Transmissions, so if I had any problems I have several spares. But they are all .73 overdrive.<\/p>\n<p>Is there an auxiliary transmission that would work with that?<\/p>\n<p>Does an auxiliary transmission make too much rotational drag?<\/p>\n<p>Or, change the rears.<\/p>\n<p>Option 3:<\/p>\n<p>I could just buy a  T2060 or 70 or 80 whatever would work better. I believe they all have the same 0.60 overdrive.<\/p>\n<p>That&#8217;s probably the most cost effective thing, although I&#8217;ve been reading used ones can have a lot of problems, because the drivers seem to want to split all the gears all the time.<\/p>\n<p>Do the 70 or 80 split the gears any better? That&#8217;s tough when you have a tall overdrive gear to shift into.<\/p>\n<p>Maybe more gears helps?<\/p>\n<p>Option 4:<br \/>I could buy a double overdrive Road Ranger but that would be pricey.<\/p>\n<p>And I believe that&#8217;s only .62 Overdrive so it doesn&#8217;t really help the top end, but if it were a 13, it would help the splits.<\/p>\n<p>And I already have a really nice heavy duty 13 speed that is like new.<\/p>\n<p>I can put that in my tractor if I don&#8217;t use it for this truck.<\/p>\n<p>Anyway I&#8217;m sure you guys have seen all of this before, what do you think?\n\t\t\t\t\t<\/p>\n<p>\u00a0<\/p>\n<\/p><\/div>\n<p><script>\n\t!function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod?\n\t\tn.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;\n\t\tn.push=n;n.loaded=!0;n.version='2.0';n.queue=[];t=b.createElement(e);t.async=!0;\n\t\tt.src=v;s=b.getElementsByTagName(e)[0];s.parentNode.insertBefore(t,s)}(window,\n\t\tdocument,'script','https:\/\/connect.facebook.net\/en_US\/fbevents.js');\n\tfbq('dataProcessingOptions', []);\n\tfbq('init', '1812746315680142'); \/\/ Insert your pixel ID here.\n\t\t\t\tfbq('track', 'PageView');\n\t\t<\/script><br \/>\n<br \/><br \/>\n<br \/><a href=\"https:\/\/www.thetruckersreport.com\/truckingindustryforum\/threads\/mack-transmission-and-rear-axle-combinations.2520022\/\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m looking at a Mack tri-axle dump truck that I am considering purchasing. My understanding is that for certain trucks they had rear axles with super low gearing. But not exactly sure with the ratio is but it&#8217;s got to be somewhere between mid-fives up to seven. These trucks used the T2060 transmission, because it&#8230;<\/p>\n","protected":false},"author":1,"featured_media":18353,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-18352","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-weather"],"_links":{"self":[{"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/posts\/18352"}],"collection":[{"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/comments?post=18352"}],"version-history":[{"count":0,"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/posts\/18352\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/media\/18353"}],"wp:attachment":[{"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/media?parent=18352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/categories?post=18352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pro-truckdrivers.com\/blog\/wp-json\/wp\/v2\/tags?post=18352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}