RR trucker Posted October 24, 2010 Share Posted October 24, 2010 I have a '79 DM 886SX that has a 425CAT ,and a 15 speed Roadranger. I was wondering if I could make it split on the low side somehow? It has 5.88 gears and pulling 40 Ton of coal across the mountain... I wish it slit on the low side to keep the Cat in its power-band!!! I'm looking into swapping to 7.58 gears if I have to... I'm just low on cash and just starting my trucking career! Only hauled 11 loads so far... ANY help would be greatly appreciated!!! Quote Link to comment https://www.bigmacktrucks.com/topic/16254-can-i-make-my-15-speed-split-on-the-low-side/ Share on other sites More sharing options...
bullhusk Posted October 24, 2010 Share Posted October 24, 2010 Yes you can shift the 15 speed Fuller progressive. Put your dash switch in D/R (low) then put your trans in 1'st shift from 1'st to 2'nd in low, then flip your dash switch to HI, then shift rour trans. back into 1'st then to 2'nd, then flip your dash switch back into low and shift your trans. into 3'rd then to 4'th an just do this all the way to 5'th HI, then pull your button up from 6'th to 10'th. If you want to do it the E/Z way just shift your trans from 1'st to 5'th in deep reduction flip your dash switch back to HI then shift your trans. back into 4'th then to 5'th Quote Link to comment https://www.bigmacktrucks.com/topic/16254-can-i-make-my-15-speed-split-on-the-low-side/#findComment-65780 Share on other sites More sharing options...
theakerstwo Posted October 24, 2010 Share Posted October 24, 2010 If your talking about splitting the 5 gears in low range withe deep reduction like a 13 speed slpitter then no you cant. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/16254-can-i-make-my-15-speed-split-on-the-low-side/#findComment-65782 Share on other sites More sharing options...
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