8-lug disk swap... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smokie347 · 12-01-2005, 04:44 PM

I searched and didn't find anything on this so I apologize if I missed something. I am trying to find out if the 71-87 8 lug disk brake parts swap, like the 1/2 ton parts do. I have a 68 C-20 with the Eaton 1 ton rear. I am turning it into a dually wedgeback car hauler to take my streetrods to car shows. I once found a site online that carried a kit that included drop spindles, rotors, calipers, but have since lost the link. Any help here would be greatly appreciated. Thanks Jeff.

www.twistedmetalfab.net

qksilver · 12-01-2005, 10:41 PM

Use the 73- 3/4 parts, they will swap easily plus parts are cheaper and you have rubber bushings in the control arms, so they ride better. As far as dropped spindles i would check with one of the vendors on the board. If it was just for show I wouldn't worry so much about the spindles but if you plan to use it for towing I would make sure that you use a high quality spindle. There is such a range from bad to good quality on spindles.
Steve

smokie347 · 12-02-2005, 04:18 AM

I think I am going to skip the dropped spindles. I am running 10 ply 235/85/16 tires in order to get the weight GVW limit up where I need it. When finished this truck should have a GVW of close to 18,000 lbs. I am hoping to be able to have one car on the wedgeback, and another in the 24ft trailer behind it. I am also considering a Duramax/Allison swap, if I can find a good donor truck. Thanks for the help. Jeff.

qksilver · 12-02-2005, 10:24 AM

With those loads, the dropped spindles will give you problems down the road. With the later model swap, it's just like the 5 lug, except using 3/4. I would look at some high performance brake pads, they are cheap insurance and do stop better, just make sure that they are for towing applications.
Steve

12-01-2005, 04:44 PM	#1
smokie347 Registered User Join Date: Nov 2005 Location: Georgetown, KY Posts: 2	8-lug disk swap... I searched and didn't find anything on this so I apologize if I missed something. I am trying to find out if the 71-87 8 lug disk brake parts swap, like the 1/2 ton parts do. I have a 68 C-20 with the Eaton 1 ton rear. I am turning it into a dually wedgeback car hauler to take my streetrods to car shows. I once found a site online that carried a kit that included drop spindles, rotors, calipers, but have since lost the link. Any help here would be greatly appreciated. Thanks Jeff. www.twistedmetalfab.net Last edited by smokie347; 12-01-2005 at 04:45 PM.

12-01-2005, 10:41 PM	#2
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: 8-lug disk swap... Use the 73- 3/4 parts, they will swap easily plus parts are cheaper and you have rubber bushings in the control arms, so they ride better. As far as dropped spindles i would check with one of the vendors on the board. If it was just for show I wouldn't worry so much about the spindles but if you plan to use it for towing I would make sure that you use a high quality spindle. There is such a range from bad to good quality on spindles. Steve

12-02-2005, 04:18 AM	#3
smokie347 Registered User Join Date: Nov 2005 Location: Georgetown, KY Posts: 2	Re: 8-lug disk swap... I think I am going to skip the dropped spindles. I am running 10 ply 235/85/16 tires in order to get the weight GVW limit up where I need it. When finished this truck should have a GVW of close to 18,000 lbs. I am hoping to be able to have one car on the wedgeback, and another in the 24ft trailer behind it. I am also considering a Duramax/Allison swap, if I can find a good donor truck. Thanks for the help. Jeff.

12-02-2005, 10:24 AM	#4
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: 8-lug disk swap... With those loads, the dropped spindles will give you problems down the road. With the later model swap, it's just like the 5 lug, except using 3/4. I would look at some high performance brake pads, they are cheap insurance and do stop better, just make sure that they are for towing applications. Steve



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