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fabric8rb 05-07-2009, 08:10 AM So I am doing the disc brake swap and am having trouble finding the right rotor to use with this. I tried an 83 Chevy front, and the center is not big enough. Do I just need to get it machined and has anyone else experienced this? The rig it is going under is an 83 3/4 ton GMC 350, 465, 208. Apologies for my newbness. JeepFreak21 05-07-2009, 10:57 AM First, how much would you have to open up the hole? Next, the rotors you're talking about go behind the hub and are held in place with the lug studs. Make sure you can find lug studs that will press into your hubs and hold the rotors in place before machining the rotors. I converted my oddball rear 60 (which has D70 size hubs) to discs, but I had to use a rotor from a '99 E-350, which goes on the outside of the hubs, because I couldn't find studs to make the Chevy rotors work. HTH, Billy jam0o0 05-13-2009, 09:30 AM yup the '96 ford E350 rear disk slides on and fits great. you'll have to work on the spacing of your caliper bracket though since it's a different size than what most rear disk kits use. Rokcrawlr 05-25-2009, 08:03 AM I run 78 Chevy 3/4 ton front rotors on my Ford 70. -Troy MochaMike 05-25-2009, 01:59 PM Try this... http://www.off-road.com/trucks4x4/article/articleDetail.jsp?id=186511 79 Chevy D44 front. upsidedown 05-28-2009, 11:39 AM Option 1: Try DIY4x4.com - They have a custom cut bracket that works with a weld on flange on the spindle. Makes it so the caliper bracket is still removable. He sells the rotors that you are looking for for about the same price as stock ones plus 10 bucks worth of machine work to bore out the center hole larger. Option 2: grind off the back of the D70 hub so the smaller diameter 77 Chevy K20 rotors work. The rotors are held in place (on the back of the hub)by the studs that are pressed in to the hub they do not need a center that is fit to the hub. In other words the bore can be oversized on the rotor and it don't make a shit of difference. upsidedown 05-28-2009, 11:42 AM Heres another good thread with some D70 tech. http://www.pirate4x4.com/forum/showthread.php?t=570338 mj 05-28-2009, 09:10 PM machine the hubs not the rotors, that way when it come time to replace they will be bolt on rather then custom it takes a few minutes on a tool room lathe | |