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#1 |
Registered User
Join Date: Aug 2009
Location: Ft.Collins, Co.
Posts: 101
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I recently purchased what I beleive to be a factory six-lug disc brake set up. They were on a 72 Cheyenne super. I have also heard this was an option on some GMC.s as well. What would have come from the factory with this set-up ? and what year?
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#2 |
Registered User
Join Date: Jan 2004
Location: Whitehorse YK Canada
Posts: 2,651
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Re: Factory six-lug discs ?
Was it 4X4? Because a 2wd 72 1/2 ton should have 5 lug disk brakes.
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Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is! |
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#3 |
Registered User
Join Date: Aug 2009
Location: Ft.Collins, Co.
Posts: 101
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Re: Factory six-lug discs ?
It was two wheel drive. I really didnt believe him when I spoke to him on the phone but they are what they are. I thought they may have been old after-market but the calipers are G.M. marked.
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#4 |
Senior Member
![]() Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
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Re: Factory six-lug discs ?
calipers might be gm, but the rotors are definatly going to be aftermarket is the rearend 6 lug also?
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1967custom Last edited by michael bustamante; 09-02-2009 at 06:42 PM. |
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#5 |
Senior Member
Join Date: Jul 2006
Location: Blountville, Tn.
Posts: 3,904
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Re: Factory six-lug discs ?
First
![]() ![]() Trust me somebody else would have done it, If I didn't. Now seriously if you can post some pics of what your working with, I'm sure somebody can elaborate what you have. BUT like mentioned before. All the 71 72 I have seen are 5 lug disc brake set-up on the 1/2 ton trucks. and 8 lugs for the 3/4 ton trucks.
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*We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. * You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! Last edited by BarryB; 09-02-2009 at 06:46 PM. |
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#6 |
Senior Member
Join Date: Jan 2005
Location: Loveland Co.
Posts: 3,098
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Re: Factory six-lug discs ?
Welcome neighbor, all 71 and up 2wd half ton trucks had 5-lug disc brakes, no exceptions, regardless if it's Chevy or GMC. It sounds like an aftermarket rotor.
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Chris 74 Custom Deluxe SWB 350/350/3.73’s 99 2wd Silverado RCSB 5.3/4L60/3.90’s http://www.classictrucks.com/feature...short_bed.html Last edited by powell72; 09-02-2009 at 10:14 PM. |
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#7 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Factory six-lug discs ?
bump
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#8 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Factory six-lug discs ?
My ECE conversion from drums to discs is 6-lug. If I ever want to go to a 5-lug pattern, all I have to do is use the stock 5-lug rotors from GM or any other parts house. So, who's to say that someone didn't do the reverse and put some ECE (or other supplier) rotors on in place of the original 5-lug rotors?
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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#9 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Factory six-lug discs ?
6-lug 2wd disc brakes aren`t factory.No pre-71 disc brakes/No post`70 6-lug.All 71/72s are 5-lug disc.All 67-70s are drum.
that`s the gospel.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#10 | |
Registered User
Join Date: Jul 2003
Location: Cypress, Tx
Posts: 4,005
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Re: Factory six-lug discs ?
Quote:
Also, wasn't there a 'how-to' on using 88+ chevy 6 lug stuff for a conversion on the front? I could have sworn I read that somewhere. Maybe the previous owner used that stuff, that would say GM on it too. Just some ideas. Shawn
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1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE |
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#11 |
I really hate wet sanding!
![]() Join Date: Dec 2008
Location: Brookfield, MO
Posts: 601
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Re: Factory six-lug discs ?
I think I saw a thread on here where someone got the front suspension off of like a 88 or so 3/4 ton chevy 2 wheel drive and it was a 6 lug set up. I believe the 6 lug 3/4 ton was only available for a couple of years if I am remembering right.
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#12 |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Factory six-lug discs ?
I believe '88-'98 Light Duty 3/4 tons all had 6 lug, Heavy Duty 3/4 ton had 8 lug.
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. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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#13 |
Special Order
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Location: Mt Airy, MD
Posts: 85,859
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Re: Factory six-lug discs ?
That`s a possibility...`88-up light C/20 parts.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#14 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: Factory six-lug discs ?
OK but the real ?? is how wide is it?? this maybe away to convert to disc and keep the skinny on things??
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1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
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#15 |
Eat My Rust
Join Date: Jan 2007
Location: Cypress, Texas
Posts: 3,362
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Re: Factory six-lug discs ?
It's dirt easy to swap on the 73-87 heavy-halfton spindles, and with aftermarket 6 lug disks. There were no factory 6-lug disk 2wd trucks until the 88-97 era.
But, I run aftermarket 6 lug disks on 73-87 heavy halftone spindles/calipers. |
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#16 | |
Restoring a 68 SWB
Join Date: Jan 2008
Location: Nashville, TN
Posts: 1,068
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Re: Factory six-lug discs ?
Quote:
Edit: Linky http://67-72chevytrucks.com/vboard/s...d.php?t=353393 That's not the exact thread I was talking about but good information.
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My Build Thread: Lucy - My 1968 SWB - Shop Truck Style North Nashville Concrete Contractor Last edited by tdave00; 09-05-2009 at 12:49 AM. |
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#17 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Factory six-lug discs ?
however, back to the original poste's question, if your truck is a 2 wheel drive 1/2 ton truck, there is no way it has original 6 lug disks. GM didn't start that on half tons till 1999.
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#18 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: Factory six-lug discs ?
hey long horn has anyone tried to fit that spindle on to our old stuff..what kind of results if they did make it work??
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1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
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#19 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Factory six-lug discs ?
no idea what so ever. I have no interest in 6 lug discs, so i never paid any attention.
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#20 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Factory six-lug discs ?
It`s most practicle to just go ahead and buy the aftermarket discs and use knuckles that will bolt in,such as 71/72s.If you aren`t lowering you can buy someone`s cast-offs from their swap or,if you are lowering,buy the bolt-on kit.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 09-07-2009 at 09:18 AM. |
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#21 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: Factory six-lug discs ?
being bagged and cupped I really can't go to dropped spindles I'm about as low as I can go unless I just want to have alower ride height but thats not what I'm after ...I just want to up grade to better brakes...I may just add power and run it
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#22 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Factory six-lug discs ?
I`d get someone who installed drop spindle`s original 71/72 spindle for very cheap to free,used 71/72 backing plates,rebuilt 71/72 calipers,new hoses,and aftermarket 6-lug discs.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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