Front spindles - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vondutch · 10-17-2009, 02:44 PM

I bought a 63 gmc i am in the process of bagging it. The guy who i bought it off of told me that it had a mid 70's van front end. Control arms and brakes. But it has a small gm rotor on it which is 5x4.75 which is a s10 bolt pattern. I put it up to a 76 spindle off of a c10 2wd. They are the same except for the length of the shaft and the diameter.my rotor is to small to fit on that spindle. The casting number off of my spindle is gm 256. Can anybody help me. Thanks

**Captainfab** · 10-18-2009, 12:23 AM

So if I understand correctly, you are wanting to put the smaller 5 x 4.75" pattern rotor on the '76 C10 spindle? What are you trying to accomplish by doing this?

vondutch · 10-18-2009, 08:12 AM

no the truck has a full size spindle on it. the rotor is off of an s10. im trying to put a drop spindle on it. but that rotor wont fit on a full size dropspindle.

SCOTI · 10-18-2009, 09:49 AM

Some vans had the smaller car stuff (5x4.75" spindle/rotors). I don't know of a 'direct swap' dropped spindle. You could try an S10 or the mid size A/F bodies. Are you locked into the small car pattern? If so, the Lt. Duty 81-87 GM truck spindle is available in dropped form (Bell Tech) & you can use 5x4.75" brake stuff. It does not utilize the HD larger 1.25" rotors that trucks are better suited for (they use 1.00" rotors), but they are still considered 12" brakes.

vondutch · 10-18-2009, 01:08 PM

thanks a million for that info. i am lock into the smaller bolt pattern. i think mine has thge inch and a quarter rotor on it?

10-17-2009, 02:44 PM	#1
vondutch Registered User Join Date: Dec 2007 Location: pittsburgh pa. Posts: 13	Front spindles I bought a 63 gmc i am in the process of bagging it. The guy who i bought it off of told me that it had a mid 70's van front end. Control arms and brakes. But it has a small gm rotor on it which is 5x4.75 which is a s10 bolt pattern. I put it up to a 76 spindle off of a c10 2wd. They are the same except for the length of the shaft and the diameter.my rotor is to small to fit on that spindle. The casting number off of my spindle is gm 256. Can anybody help me. Thanks

10-18-2009, 12:23 AM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Front spindles So if I understand correctly, you are wanting to put the smaller 5 x 4.75" pattern rotor on the '76 C10 spindle? What are you trying to accomplish by doing this? __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

10-18-2009, 08:12 AM	#3
vondutch Registered User Join Date: Dec 2007 Location: pittsburgh pa. Posts: 13	Re: Front spindles no the truck has a full size spindle on it. the rotor is off of an s10. im trying to put a drop spindle on it. but that rotor wont fit on a full size dropspindle.

10-18-2009, 09:49 AM	#4
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,939	Re: Front spindles Some vans had the smaller car stuff (5x4.75" spindle/rotors). I don't know of a 'direct swap' dropped spindle. You could try an S10 or the mid size A/F bodies. Are you locked into the small car pattern? If so, the Lt. Duty 81-87 GM truck spindle is available in dropped form (Bell Tech) & you can use 5x4.75" brake stuff. It does not utilize the HD larger 1.25" rotors that trucks are better suited for (they use 1.00" rotors), but they are still considered 12" brakes. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.* Last edited by SCOTI; 10-18-2009 at 09:53 AM.

10-18-2009, 01:08 PM	#5
vondutch Registered User Join Date: Dec 2007 Location: pittsburgh pa. Posts: 13	Re: Front spindles thanks a million for that info. i am lock into the smaller bolt pattern. i think mine has thge inch and a quarter rotor on it?



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