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correct 10" rear drums for 8 3/4 in 71.. #1192672 03/07/12 12:55 AM 03/07/12 12:55 AM
Joined: Nov 2003 Posts: 3,106 Ridgeland Wi M mopars_1 OP master
mopars_1 OP master M Joined: Nov 2003 Posts: 3,106 Ridgeland Wi	just wondering what the correct rear drums would look like for a 71 roadrunner with 10.5" brakes on an 8 3/4? I have one that the outer surface is smooth and one thats finned. also, are there any good aftermarket ones that are pretty close to oem? thanks! -kevin Last edited by mopars_1; 03/07/12 03:14 PM. 1971 Plymouth Duster 340 auto 1937 Plymouth PT50 1969 Dodge Dart Swinger 340 4 speed 2013 Ram laramie 2500 hemi 2008 Harley FLSTSB springer

Re: correct 10.5" rear drums for 8 3/4 in 71.. [Re: mopars_1] #1192673 03/07/12 01:25 PM 03/07/12 01:25 PM
Joined: Mar 2008 Posts: 9,550 Sacramento CA M Morty426 master
Morty426 master M Joined: Mar 2008 Posts: 9,550 Sacramento CA	Kevin, The drum is measured by it's inside diameter and would be 10 inches. It should be smooth - not finned. Morty

Re: correct 10.5" rear drums for 8 3/4 in 71.. [Re: Morty426] #1192674 03/07/12 03:13 PM 03/07/12 03:13 PM
Joined: Nov 2003 Posts: 3,106 Ridgeland Wi M mopars_1 OP master
mopars_1 OP master M Joined: Nov 2003 Posts: 3,106 Ridgeland Wi	Quote: Kevin, The drum is measured by it's inside diameter and would be 10 inches. It should be smooth - not finned. Morty alright. is there any aftermarket that looks oem? or is my best bet finding a good original pair? thanks! -kevin I changed the title so I dont confuse anyone Last edited by mopars_1; 03/07/12 03:14 PM. 1971 Plymouth Duster 340 auto 1937 Plymouth PT50 1969 Dodge Dart Swinger 340 4 speed 2013 Ram laramie 2500 hemi 2008 Harley FLSTSB springer

Re: correct 10.5" rear drums for 8 3/4 in 71.. [Re: mopars_1] #1192675 03/07/12 05:32 PM 03/07/12 05:32 PM
Joined: Jan 2003 Posts: 75,043 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,043 U.S.S.A.	Current aftermarket should be smooth, I bought a set of Wagners a number of years back and they are smooth on the outside, now ???

Re: correct 10" rear drums for 8 3/4 in 71.. [Re: mopars_1] #1192676 03/07/12 05:49 PM 03/07/12 05:49 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	I believe the 10" drums are smooth and the 11" are finned. At least that has been my experience.

Re: correct 10" rear drums for 8 3/4 in 71.. [Re: Challenger 1] #1192677 03/07/12 06:19 PM 03/07/12 06:19 PM
Joined: Nov 2003 Posts: 3,106 Ridgeland Wi M mopars_1 OP master
mopars_1 OP master M Joined: Nov 2003 Posts: 3,106 Ridgeland Wi	looking at ebay and other misc parts stores with pictures, they appear to be smooth. maybe aftermarket is my best bet? 1971 Plymouth Duster 340 auto 1937 Plymouth PT50 1969 Dodge Dart Swinger 340 4 speed 2013 Ram laramie 2500 hemi 2008 Harley FLSTSB springer

Re: correct 10" rear drums for 8 3/4 in 71.. [Re: mopars_1] #1192678 03/07/12 08:12 PM 03/07/12 08:12 PM
Joined: Apr 2007 Posts: 2,920 Calgary, Alberta Canada a12rag master
a12rag master Joined: Apr 2007 Posts: 2,920 Calgary, Alberta Canada	Think that the finned drums were the Heavy Duty brake option from the factory. They have more meat to them, and have the fins for helping to cool the drum. If I could find them, that is what I would use on my 70 B Body with 10x2.5" drums on the back. That was what came on the car.

Re: correct 10" rear drums for 8 3/4 in 71.. [Re: Challenger 1] #1192679 03/07/12 10:49 PM 03/07/12 10:49 PM
Joined: Nov 2003 Posts: 12,494 Western Colorado High Desert moparmarks I Live Here
moparmarks I Live Here Joined: Nov 2003 Posts: 12,494 Western Colorado High Desert	Quote: I believe the 10" drums are smooth and the 11" are finned. At least that has been my experience. Looking at my pallet of brakes and whats been on all my 71B, I would agree. 72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/ motormangj@gmail.com

Re: correct 10" rear drums for 8 3/4 in 71.. [Re: moparmarks] #1192680 03/07/12 11:01 PM 03/07/12 11:01 PM
Joined: Jan 2003 Posts: 3,000 Long Island, NY shakerjoe master
shakerjoe master Joined: Jan 2003 Posts: 3,000 Long Island, NY	11"ers on the back of my cuda 7108406-joescudadrum2.jpg (48 downloads)

Re: correct 10" rear drums for 8 3/4 in 71.. [Re: shakerjoe] #1192681 03/08/12 12:38 AM 03/08/12 12:38 AM
Joined: Oct 2006 Posts: 7,369 Iowa burdar Owen's Dad
burdar Owen's Dad Joined: Oct 2006 Posts: 7,369 Iowa	I've been looking at parts store replacement drums and I havn't found a correct looking one yet. One of them I had ordered had CHINA cast into the front face of the drum. It would have been visable through the wheel. This one had a lip around the center hole which my originals don't have. The wheel probably wouldn't bolt up with that lip there. The drums were a lot wider then stock too. I'll be cleaning up my original ones.

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