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#1 |
Registered User
Join Date: Jan 2007
Location: north carolina
Posts: 13
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8 lug to 5 or 6 conversion
Ok heres my problem i have a 72 c20 truck.Which is an 8 lug and i cant find any nice wheels for. So i want to convert it to a 5 or 6. My ? is what parts do i need to do this. Is there a factory set up that will bolt up
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#2 |
Senior Member
Join Date: Jun 2006
Location: Oregon City, Or
Posts: 758
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Re: 8 lug to 5 or 6 conversion
You can get a rear end from a 1/2 ton. In the front you will have to swap arms and spindels.
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#3 |
Registered User
Join Date: Jan 2007
Location: north carolina
Posts: 13
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Re: 8 lug to 5 or 6 conversion
Will only the 67-72 spindles fit ?
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#4 |
Registered User
![]() Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: 8 lug to 5 or 6 conversion
No. You can bolt on a set of 73-87 uppr/lower arms and spindles from a 1/2ton 2wd. If you have leaf springs I think you can also find a 12 bolt rear end from same 73-87 1/2 ton truck and it will bolt in.DONT QUOTE ME ON ANY OF THIS FOR I TOO AM LEARNING THE SAME!!
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#5 |
Registered User
Join Date: Dec 2003
Location: here
Posts: 5,789
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Re: 8 lug to 5 or 6 conversion
Isnt this truck a 3/4 ton?
Last edited by corn; 10-04-2007 at 06:37 PM. |
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#6 | |
Senior Member
Join Date: Jul 2004
Location: Clarks Hill, Indiana
Posts: 733
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Re: 8 lug to 5 or 6 conversion
Quote:
It'd be easier & cheaper to find some nice 8 luggers...
__________________
1969 K10 - V8, 465, 205, 12 bolt, D44 2002-current 1969 K20 - V8, 465, 221, Eaton, D44 2012-current Nothin' but drums on all 4 corners! past horses in the stable 72 C10-short step (97-02), 68 C10-long fleet (06-12) |
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#7 |
Registered User
Join Date: Oct 2006
Location: Pennsylvania
Posts: 19
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Re: 8 lug to 5 or 6 conversion
I just changed my 72 c20 to c10. I took my old rear axle to the junkyard and they gave me an even trade for a 1975 12 bolt rear. The front I used ECE drop spindles designed for c20 to c10 conversion. Bolts right in, then use standard c10 brake rotors. You can use existing calipers.
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#8 |
Senior Member
Join Date: Jun 2006
Location: Oregon City, Or
Posts: 758
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Re: 8 lug to 5 or 6 conversion
I would think you would have a better rim selection with all the newer 3/4 tons on the road. You see everything from stock size replacements to 22's on them.
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#9 |
Registered User
Join Date: Sep 2006
Location: Salinas
Posts: 21
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Re: 8 lug to 5 or 6 conversion
I have found the same problem for my 72 8 lug. There are a few rims out there that look decent for it. But, with my axle stubs sticking out so far, I couldn't get a single dust cap to fit over them. I will be doing the same thing to my truck. There's obviously more options out there in the 5 lug world, they are definitely sportier. Plus I am looking forward to ditching my 4.11 rear end for something a little more gas friendly. And I'd get a good chance to clean it up before installing it.
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72 GMC Sierra Grande |
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#10 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: 8 lug to 5 or 6 conversion
Rim selection for the 8 lug is poor. And the 4.10 gears are lousy.
I would go to a junkyard and get parts off a 73-87 1/2 ton. The entire front crossmember and steering gear. It's almost a bolt-in. From the back, get the differential and springs. This will have your truck riding on 1/2 ton suspension with disc brakes up front, power steering and power brakes (if you don't have them, get the parts) and better gearing for driving. You will also need a u-joint to go from your 3/4 ton driveshaft to the 1/2 ton, but any good auto parts store should have that.
__________________
Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#11 |
Registered User
Join Date: Jan 2007
Location: north carolina
Posts: 13
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Re: 8 lug to 5 or 6 conversion
Hey thanks form the info guys. I had been told by a guy b4 that the 73-87 would work but wasnt 4sure he new what he was talking bout. Hey corn u have ne more pics or info on the two pics u posted i really like what i see
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