Mirrorimg Posted July 2, 2013 Report Share Posted July 2, 2013 Hey guys, With the front end of my truck progressing, I need to start thinking about the rear. Im doing 240sx suspension in the front and already have lug conversion hubs for it. This is going to widen the front track (57-58" from some quick searching. Not sure if thats hub to hub or edge of wheel). Since I will have front disks, I would prefer rear disks for ease of changes, but probably wouldnt mind drums. I also found from another thread (http://community.ratsun.net/topic/6656-620-axle-width/) that the rear axle is 56". Im not sure on how exact there numbers are, so I will probably measure it up when I get some room in the garage in 2 weeks. I am planning on going with R32 GTR wheels (16x8, +30 offset) so all the wheels will be the same off set which would mean I would like equal width axles. This is my build thread if anyone is curious. http://community.ratsun.net/topic/53711-620-kc-overhaul/ With that being said, I think I have a few options for the rear. 1. Keep the existing rear end, weld/redrill the rear hubs, get some 5 lug drums to mount on the hub. If the track is less wide than the front, put on some spacers (not preferred). 2. Swap the rear axle with a 5 lug (drum or disks) from a different vehicle. I know the 88-95? toyota pickups had 5 lug drums, but not sure of the width. Fortunately my father has a 94, so I can measure that. 3. Redrill the current hubs, lengthen the axle tube, get longer axles. yea.... I dont think so, but felt the need to have 3 options. If someone has another idea, feel free to let me know. I wont be putting the IRS from the 240 I have into the rear. Most methods I have seen cut up the bed and I dont want that. Quote Link to comment
flatcat19 Posted July 2, 2013 Report Share Posted July 2, 2013 Dutchman in Portland. Check their site. http://www.dutchmanaxles.com/ Quote Link to comment
Mirrorimg Posted July 3, 2013 Author Report Share Posted July 3, 2013 Thanks flat, I take it you are referring to something like the link below? http://www.dutchmanaxles.com/products/housings-and-rear-ends/9inch-ford-conventional/housing-and-alloy-axle-pkg-hd-street-and-strip.html Some kits they have run $2500, so I am steering away from that. $800 seems reasonable for a brand new setup, but the additional information below is quite foreign to me. In addition to that, I currently dont have a brake setup. I dont know if I want to maintain drums if I go that route or upgrade to disks, and if disks, which model (to provide specifics they ask for). It looks like a good setup, and new is always better than used. Until I do more research and price that out, I am still favoring an all inclusive junkyard unit that I can put right in. Quote Link to comment
flatcat19 Posted July 3, 2013 Report Share Posted July 3, 2013 They will set you up to do anything you want. Gears, brakes, LSD. You name it. Just do as much homework as you can. Quote Link to comment
jesusno2 Posted July 3, 2013 Report Share Posted July 3, 2013 Dutchman moved to Idaho. 720/ hardbody diffs are 57 1/2 wms to wms. Not sure on yota 2wd but the 86 and up 4x4 yotas are 58" wms to wms. Easy 5 lug swap is the yota Diff. Only problem is their a 7.5 Diff not the 8 inch. So ratios are kinda few and far between aftermatketwise , and the only LSD option is early 1st Gen supras. Quote Link to comment
Mirrorimg Posted July 9, 2013 Author Report Share Posted July 9, 2013 They will set you up to do anything you want. Gears, brakes, LSD. You name it. Just do as much homework as you can. Thats the last thing I want to do :) I came across some more threads on this and someone mentioned the Chevy rear end from an S10 is a good fit, and has some LSD options. Lucky for me, my local pick n pull has a chevy on the yard AND it is running a special this week. Hopefully the truck will still be there this friday/weekend and I can get the rear from it. I heard the special on the radio, and it was something along the lines of %50 off, so if their pricing chart is right, I will end up spending $115ish for the rear. Dutchman moved to Idaho. 720/ hardbody diffs are 57 1/2 wms to wms. Not sure on yota 2wd but the 86 and up 4x4 yotas are 58" wms to wms. Easy 5 lug swap is the yota Diff. Only problem is their a 7.5 Diff not the 8 inch. So ratios are kinda few and far between aftermatketwise , and the only LSD option is early 1st Gen supras. That was one of my thoughts about the toyota rears, aftermarket/oem upgrade options that is. If I do the Chevy rear, I think I have a bigger pool of upgrades. I will let you guys know what happens! Quote Link to comment
Boxcar Posted July 12, 2013 Report Share Posted July 12, 2013 The right year ford 8.8 is youre best bet. Most are LSD and can be found in you're width requirement . Measurement Jeep Dana 35 Ford 7.5-Inch (Ranger) Ford Ranger 8.8-Inch Ford Explorer 8.8-Inch Width Between Wheel Mounting Surfaces 60-1/2 inches 56-1/2 inches (1983-1992) 58-1/2 inches (1993-2009) 56-1/2 inches (1990-1992) 58-1/2 inches (1993-2009) 59-1/2 inches Pinion Offset To Right Of Center 3/4 inches ? 2 inches 2 inches Pinion Length, Tube Center To U-Joint Center 11-1/2 inches 11-5/8 inches 11-5/8 inches 11-5/8 inches Pinion Height, U-Joint Center Below Tube Center 1-7/8 inches ? 1-7/8 inches 1-7/8 inches Bottom Of Diff Housing Below Tube Center 5 inches 5 inches 5-3/4 inches 5-3/4 inches Disc Brake Rotors N/A N/A N/A 11-1/4 x 7/16 inches Brake Drums 9 inches 9 inches ? 10 inches Drum brake shoes 9 x 2-1/2 inches ? ? 7-1/4 x 1-1/4 inches (e-brake) Distance between spring perches (o/c) 40-1/5 inches 38-1/2 inches 38-1/2 inches 38-1/2 inches Tube diameter 2-1/5 inches 2.80 inches (1983-2009) 3-1/4 inches (2010-2011) 2.80 inches (1990-2009)(Non-FX4) 3-1/4 inches (FX4 Models) 3.25 inches (Neck Down To 2-3/4 inches) Axle shaft diameter 1.16 inches 27-spline 1.29 inches 28-spline 1.31 inches 31-spline Quote Link to comment
FlyinPat Posted July 15, 2013 Report Share Posted July 15, 2013 As a curious onlooker I am not smart enough to understand this.... What's the WMS on the 620 for comparison? Quote Link to comment
]2eDeYe Posted July 15, 2013 Report Share Posted July 15, 2013 Wheel Mounting Surface. Usually the face of the drum or rotor that the wheel bolts to. Quote Link to comment
Farmer Posted July 16, 2013 Report Share Posted July 16, 2013 I think he was wanting to know, what is the wms of a 620 Quote Link to comment
FlyinPat Posted July 19, 2013 Report Share Posted July 19, 2013 Farmer is right. Boxcar threw out a bunch of dimensions and I was wondering how those compared to the 620's rear axle. Quote Link to comment
]2eDeYe Posted July 19, 2013 Report Share Posted July 19, 2013 Reading comprehension fails me sometimes :lol: I want to say the 620 rear is 58" I can measure later tonight if I remember. Trying to find the post with measurements on the nwde archive but I can't find the archive? :confused: Quote Link to comment
]2eDeYe Posted July 19, 2013 Report Share Posted July 19, 2013 Here is the link to the old nwde thread discussing axle options. Some good info http://garagebluebird.com/ggzilla/nwde/archive/3116.htm Thanks Tristan for hosting that. :) Quote Link to comment
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