has anyone had issues with the double reduction and oilpan clearance?

and is ther any easy way to narrow them down a little bit?

I have a great source for dirt cheap 2.5 and 5 ton rockwells with the double redux and a gear ratio of 6.9 but am a little worried about width and oilpan clearance.

the only easy way i know to narrow them cheap, is to turn the hubs around. on the front you just knock the studs out and put new ones in from the other direction. and install the hub on backwards. i have a dual rear so its already that way. when you speak of double reduction are you asking about planatry hub? if you are just asking about the third member's height and gear reduction. you need big ass tires or a custom buggy with the motor moved back. elf cruiser in waco texas is doing it on his fj40. he didn't have enough room to fit a disk brake on the front to clear his motor. i am using mine for a rock buggy project so it will be built around the axles. but it will have 44 or 48 in. tires. if you don't plan to run at least 40s you are going to have a pita fitting them under anything. the gear reduction is 6.72 in the 2 1/2 rockwells. you can get plantary reductions for the 5 tons but i am not sure on the 2 1/2s. most people just rip off the stock brakes and use a pinion brake. and that runs in to the oil pan problems that elf cruiser is having. i am going to get some wheel centers cut out so i can adapt them to a sprint car wide 5 pattern. the custom rims cost way to much from boyce. you can go to there site and pick up some good info. thats about all i can throw out. mike

the cheap source is an old man just outside of town who has a HUGE stockpile of old dodge and Jeep military parts. He has about ten or eleven 2.5 ton or 5 ton miliatry trucks, 4 m-715's in various stages of completion, 1 m-725, a bunch of old dodge m-trucks, several jeep m-138's, and many others. he is just looking to get rid of the stuff.

clearance standing straight is not my concern, it is at flex that I'm worried about...

and with that high of gears this would be for trail use mostly.

MK,
Email me offline on a bit of info on these axles. My aunt and uncle live in Ft. Collins. They own the Sundance.

Jason Mace
my email (macej@lvvwd.com)

Originally posted by gunracer1
the only easy way i know to narrow them cheap, is to turn the hubs around. on the front you just knock the studs out and put new ones in from the other direction. and install the hub on backwards. i have a dual rear so its already that way.

Will this work on both the front and rear? What does it bring them down to, WMS to WMS?

it will work on the front and rear if it is a single wheel truck. the duals are allready as narrow as you can get cheap. unless you spend the bucks and find get the axles resplined. i am not sure of the wms to wms. i will try to find out. mike

Originally posted by Vermont_Toy


Will this work on both the front and rear? What does it bring them down to, WMS to WMS?
The front is is the same as a 60 front or within one inch of the same a 60 front..I believe the rear with the hubs set-up for the narrow track is roughly the same.But, can't remember the exact measurement.if you get some make sure you get the style that uses the u-joint.The older stule uses a crappy ball joint(not like ball joints on the knuckle) which breaks easy.As well the olders ones without the u-joint have weaker axle shafts..Hope this helps :D