2 speed rear end with automatic transmission. You can also use these ranges to provide extra steps between transmission shifts when driving on steep grades or fuel economy may be factors. Just shifted by a seperate knob. Usually found on older MD trucks with five speeds or on heavy haul rigs looking for more possible ratios. Are you going to use this truck to move heavy loads? Dec 14, 2006 · How do these work? I know you shift a 2 speed rear along with the normal course of driving, but how do they work? Is it just like a 2 speed rear or is it like a transfer case? I assume it can't be shifted while in motion? Here's a truck with an allison and high/low range. Apr 17, 2011 · Ford owners manual says to use a two speed behind a automatic this way - Once the transmission is in top gear (above approx 45 mph), momentarily let up on the throttle, then shift the rear end up to high range. . My MG has an electrically switched overdrive that mounts on the back of the transmission. But to do it correctly, keep your foot on the gas, pull up the button, then about a second or two later, let off on the gas and let it shift. Nov 26, 2007 · Electric 2 speed axles were popular in 1 1/2 and 2 ton trucks but with modern high torque engines and Multi speed transmissions the 2 speed rear end has been nearly forgotten. Re: automatic with 2speed rearend? It might be hard to shift it on the go. It's worth a try. Nov 21, 2011 · Where you have a gear reduction in the rear axle, these have two ratio's back there. Aug 5, 2024 · A two-speed rear axle allows the driver to select a low range for greater pulling power and a high range for greater road speed and fuel economy. Mar 10, 2023 · I was a fan of the two-speed differentials in the dump trucks of the day. gcqubh xmhoj uxprup gwmvu jatajjqe ycieveq vkdgb umhn cphxgw kfaqwy