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#1 |
Registered User
Join Date: Dec 2009
Location: daytona beach fl
Posts: 187
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what rear end do i have?
i have a 61 c10 i was replacing the diff gaskit and when i bought the one that autozone said went for a 61 in was a 10 bolt. i have a 12 bolt did the 61 come with 12?
i got the right gaskit we looked it up under a 65 el camineo any help im wanting to upgrade my brakes in the rear and now im not sure if the rear end has been swaped out along the line
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61 step/long bed SBW(SOLD) NEED A NEW PROJECT |
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#2 |
Six in a row makes it go...
![]() Join Date: Mar 2009
Location: Vacationland: Maine
Posts: 1,346
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Re: what rear end do i have?
Can you post a pic?
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67 C20 long step resto: http://67-72chevytrucks.com/vboard/s...d.php?t=342086 66 C10 long step build: http://67-72chevytrucks.com/vboard/s...=1#post3814790 CT to Alaska in a 67 C10: http://67-72chevytrucks.com/vboard/s...d.php?t=399224 “The height of sophistication is simplicity." - Clare Boothe Luce |
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#3 |
Registered User
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
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Re: what rear end do i have?
When your talking ten bolt vs twelve bolt, we are referencing the bolts on the ring gear to the carrier, not the cover. There should be a series of numbers / letters on the top right of you axle housing, not sure if its on the rear top or front top, which will give your an idea of what you have. Some where on this site you can decipher this...
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`64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip |
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#4 | |
Senior Car Nut
![]() Join Date: Jan 2008
Location: shellman bluff, GA
Posts: 1,411
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Re: what rear end do i have?
Quote:
I just saw that chart with the ID numbers not long ago on here. rain man, do you have 5 bolt wheels, which is what an El Camino should have had, or 6 bolt?
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Larry Last edited by fleetsidelarry; 04-18-2010 at 10:38 AM. |
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#5 |
Senior Car Nut
![]() Join Date: Jan 2008
Location: shellman bluff, GA
Posts: 1,411
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Re: what rear end do i have?
Duh, right up at the top:
http://67-72chevytrucks.com/vboard/s...d.php?t=327764 scroll about half way down to see a readable version
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Larry Last edited by fleetsidelarry; 04-18-2010 at 10:48 AM. |
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#6 |
optomistic ah-so
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 544
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Re: what rear end do i have?
Almost 50% of my recent experiences with Autozone have involved the wrong part in the right package.
On my last (hey, is that a double entendre?) return, the counter worker needed me to tell him the part I was returning was a master cylinder, while it was out of the box on the counter in front of him.
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Rubbing is Racin' Ribbing is Bench Racin' 1970 C-10 lwb Fleetside. Originally 350 2-bbl 3-on-the-tree, m/b, m/w, m/s no a/c. Currently running on a '76 Camaro 305. ![]() |
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#7 |
Registered User
Join Date: Dec 2009
Location: daytona beach fl
Posts: 187
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Re: what rear end do i have?
12 bolt cover and i have a 6 lug
the po had this truck all choped up i know the engine is from a 65 el camino the trani is ?? he said he had swaped out the rear but wasent sure what it came from (po was a old red neck crazy guy)
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61 step/long bed SBW(SOLD) NEED A NEW PROJECT |
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#8 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: what rear end do i have?
While it is true that 10 or 12 bolt refers to the number of ring gear bolts, it will most certainly coincide with the number of bolts holding the cover on too. Very few GM rearends had 10 bolt ring gears and 12 bolt covers. I've read about them, but me or anyone I know has ever seen one that the cover bolts didn't match the ring gear bolts in number.
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I'm on the Instagram- @Gearhead_Kevin |
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#9 |
Registered User
Join Date: Dec 2009
Location: daytona beach fl
Posts: 187
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Re: what rear end do i have?
yea i thought they were allways the same
i allways just go by the bolts on the cover anyone know if the 61 had a 10 or 12?
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61 step/long bed SBW(SOLD) NEED A NEW PROJECT |
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#10 |
Senior Car Nut
![]() Join Date: Jan 2008
Location: shellman bluff, GA
Posts: 1,411
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Re: what rear end do i have?
I think they came with a 10 bolt. My 61 panel has a 10 bolt (cover) but I don't think it's original because it has finned brake drums which I don't think they had in '61. I think mine is a "corporate 10 bolt" out of a later truck.
Check this site to match up your cover gasket shape (scroll about half way down), six bolt wheels would mean a truck, not a car, I'd think. http://coloradok5.com/axleguide.shtml
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Larry |
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#11 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: what rear end do i have?
That CK5 link doesn't show the older 10 bolts.
The '60-'62 C10 trucks had 10 bolt rear ends. They can be identified by the perfectly round rear cover with 10 bolts and a fill plug. Also the third member is removeable from the front of the housing. If you have something different, then it isn't original.
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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 |
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#12 |
Registered User
Join Date: Dec 2009
Location: daytona beach fl
Posts: 187
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Re: what rear end do i have?
so i think it is this gm 12 bolt
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61 step/long bed SBW(SOLD) NEED A NEW PROJECT |
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#13 |
Registered User
Join Date: Dec 2009
Location: daytona beach fl
Posts: 187
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Re: what rear end do i have?
i just snaped some pics im pretty sure it is the gm 12
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61 step/long bed SBW(SOLD) NEED A NEW PROJECT |
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#14 |
Senior Car Nut
![]() Join Date: Jan 2008
Location: shellman bluff, GA
Posts: 1,411
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Re: what rear end do i have?
looks like a 12 bolt from possibly a 65-70 (not sure when they first relocated the panhard mount), the location of the panhard bar attachment indicates it definitely isn't a '61, and 71-72 would have had 5 bolts hubs, you said yours were 6. again, I'm not sure when they went back to 6 bolts. Does your frame have an X member?
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Larry Last edited by fleetsidelarry; 04-19-2010 at 01:28 PM. |
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#15 |
Registered User
Join Date: Dec 2009
Location: daytona beach fl
Posts: 187
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Re: what rear end do i have?
ya the bar looks like it has been spliced into another bar to make it longer.
if anyone has a pic of a 60-63 and then a 456 so i can c the difference thanks. im wanting to up grade to 5 lug and need to know what to look for
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61 step/long bed SBW(SOLD) NEED A NEW PROJECT |
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#16 |
Senior Car Nut
![]() Join Date: Jan 2008
Location: shellman bluff, GA
Posts: 1,411
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Re: what rear end do i have?
rain_man, FYI, here's what the 60-62 Frame (with X-member) looks like:
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Larry |
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#17 |
Registered User
Join Date: Dec 2009
Location: daytona beach fl
Posts: 187
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Re: what rear end do i have?
thanks ill have to crawl under there and take a look
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61 step/long bed SBW(SOLD) NEED A NEW PROJECT |
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#18 |
Senior Car Nut
![]() Join Date: Jan 2008
Location: shellman bluff, GA
Posts: 1,411
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Re: what rear end do i have?
no need to crawl under if you have the torsion bar front end, it should be this style frame
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Larry |
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#19 |
Registered User
Join Date: Jan 2010
Location: San Jose, CA
Posts: 124
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Re: what rear end do i have?
That looks exactly like the 12 bolt in my 65 that I was just painting today.
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