Adaptor for an 8 lug to 6 lug - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72chevyfleet · 02-16-2009, 01:44 PM

ok i have a 3/4 ton truck with 8 lug axles is there an adaptor that can bolt on to change it to a 6 lug so i can get rims

**nightmare** · 02-16-2009, 03:12 PM

from what i can tell, nothing readily available. but http://adaptitusa.com/ can do custom designs. it may be a bit pricey though.

**oldiron** · 02-17-2009, 02:05 AM

Moving to the pickup forum for you.

jbristo67 · 02-17-2009, 03:09 AM

Just convert it. Safer cheaper the right way to do it.

**mr48chev** · 02-17-2009, 05:18 AM

A 72 Half ton would have five lug wheels unless you have a 4x4 and then it would be six lug but most 4x guys I know would rather have the 8 lug setup because of the stronger axles.
yep, swap out the 3/4 ton stuff for half tonthe pieces, meaning Spindles and rotors on the front and axle on the rear plus some other pieces that some of the other guys can give details on better than I can.

It might be better if you tell us exactly what you are working on first though so not to have mix ups as far as suggestions go.

**special-K** · 02-17-2009, 07:01 AM

Is there a particular wheel you want in 6 lug?Cuz there`s all kinds of choices in 8-lug.Alot of people convert to 1/2t.Personally,if I wanted a 1/2t I`d buy a 1/2t,they`re not hard to find.Also,I like 3/4t trucks for what they are as much as I like 1/2t trucks for what they are.

72chevyfleet · 02-18-2009, 07:14 PM

well do you have a site for 8 lug wheels im also thinking just paint my rims black how i want them

exmonkeypunk · 04-26-2009, 04:43 PM

My GMC is the 8 lug also. There's 2 things i dislike about it. Well 3.
Takes a while to get a wheel off without impact tools.
The large axle ends are just ugly.
Not very many wheel choices.

I have been trying to find some sort of reasonably priced solution for those of us looking to convert, but either i'm looking in the wrong places, or there's not many options out there other than swapping the whole axle.
If there's 6 to 5 lug axle tubes then there's gotta be 8 to 5 somewhere.

Longhorn Man · 04-26-2009, 06:02 PM

there probably isn't. People are afraid of the liability. you put light duty wheels and adapters on a heavy duty pickup and parts are bound to break. No one wants that liability on there buisness's shoulders. I'm sure the federal DOT would have an opinion as well as most state level DOT.
Look in the 4X4 magizines for wheels. I'm sure you can find them, its beena while, but I know I saw some real good looking ones a few years ago.
That, or make it a 1/2 ton and get the better wheel selection of a 5 lug set up, cheaper parts, and brake parts that are actually still avalible.

exmonkeypunk · 04-26-2009, 06:43 PM

Quote:

Originally Posted by Longhorn Man

there probably isn't. People are afraid of the liability. you put light duty wheels and adapters on a heavy duty pickup and parts are bound to break. No one wants that liability on there buisness's shoulders. I'm sure the federal DOT would have an opinion as well as most state level DOT.
Look in the 4X4 magizines for wheels. I'm sure you can find them, its beena while, but I know I saw some real good looking ones a few years ago.
That, or make it a 1/2 ton and get the better wheel selection of a 5 lug set up, cheaper parts, and brake parts that are actually still avalible.

What all would i have to do to at least convert the front over to 5 bolt pattern?

Longhorn Man · 04-26-2009, 09:14 PM

There's a few ppl who can tell you what parts to swap out if you want to do it piece by piece. I would say get the entire front crossmember... from hub to hub, and swap it as a one piece assembly. Makes it easier down the road when you need replacement parts. no need to remember what part is what, just remember the whole front suspention is out of a 74 C/10.... or whatever year you use.
The rear is the same way. If it is coil, a 71/72 C/10 12 bolt will bolt right in.
If it is leaf spring, then some measureing and figuring what will swap in will be needed... and possibly some welding of mounting pads or shock mounts.

cdowns · 04-26-2009, 09:46 PM

i wouldnt have much confidence in a caliper or rim or hub or axel with 14holes drilled in the high stress area you'd need to drill into

02-16-2009, 01:44 PM	#1
72chevyfleet Learning As I Go Join Date: Feb 2009 Location: scotts valley california Posts: 250	Adaptor for an 8 lug to 6 lug ok i have a 3/4 ton truck with 8 lug axles is there an adaptor that can bolt on to change it to a 6 lug so i can get rims Last edited by 72chevyfleet; 02-16-2009 at 01:54 PM.

02-17-2009, 02:05 AM	#3
oldiron Designated Grumpy Old Man Join Date: Oct 2001 Location: arlington, washington usa Posts: 3,094	Re: Adaptor for an 8 lug to 6 lug Moving to the pickup forum for you. __________________ Never let the truth get in the way of a good story 71 Chev 1/2 ton 4X4 LWB Fleetside SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=361222 http://www.youtube.com/watch?v=1LgREwtDfaA 68 Chev 1 ton flat bed http://www.youtube.com/watch?v=0bO8szzlD4A 56 Chev Handyman Wagon http://www.youtube.com/watch?v=9y-6ddpBTkM http://www.youtube.com/watch?v=lbLzZ7zY8wA 56 Chev Belair http://67-72chevytrucks.com/vboard/s...d.php?t=410667 http://www.youtube.com/watch?v=xoW0Ei7ZNIg

02-17-2009, 03:09 AM	#4
jbristo67 resident oilfield trash Join Date: Jan 2009 Location: Lubbock TX Posts: 1,465	Re: Adaptor for an 8 lug to 6 lug Just convert it. Safer cheaper the right way to do it. __________________ 1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada Last edited by jbristo67; 02-17-2009 at 03:11 AM.

02-17-2009, 05:18 AM	#5
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: Adaptor for an 8 lug to 6 lug A 72 Half ton would have five lug wheels unless you have a 4x4 and then it would be six lug but most 4x guys I know would rather have the 8 lug setup because of the stronger axles. yep, swap out the 3/4 ton stuff for half tonthe pieces, meaning Spindles and rotors on the front and axle on the rear plus some other pieces that some of the other guys can give details on better than I can. It might be better if you tell us exactly what you are working on first though so not to have mix ups as far as suggestions go. Last edited by mr48chev; 02-17-2009 at 05:27 AM.

02-17-2009, 07:01 AM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Adaptor for an 8 lug to 6 lug Is there a particular wheel you want in 6 lug?Cuz there`s all kinds of choices in 8-lug.Alot of people convert to 1/2t.Personally,if I wanted a 1/2t I`d buy a 1/2t,they`re not hard to find.Also,I like 3/4t trucks for what they are as much as I like 1/2t trucks for what they are. __________________ "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 ~

02-18-2009, 07:14 PM	#7
72chevyfleet Learning As I Go Join Date: Feb 2009 Location: scotts valley california Posts: 250	Re: Adaptor for an 8 lug to 6 lug well do you have a site for 8 lug wheels im also thinking just paint my rims black how i want them __________________ 1972 Chevy C-20 Longbed 2wd Granny Low with a Crate 350: Air Gap Manifold, Edelbrock 600cfm, HEI, Headers to a 40 series flow (soon to be dual again)

04-26-2009, 04:43 PM	#8
exmonkeypunk Barrito Loco Diablo Join Date: May 2008 Location: Cherry Valley, Illinois Posts: 636	Re: Adaptor for an 8 lug to 6 lug My GMC is the 8 lug also. There's 2 things i dislike about it. Well 3. Takes a while to get a wheel off without impact tools. The large axle ends are just ugly. Not very many wheel choices. I have been trying to find some sort of reasonably priced solution for those of us looking to convert, but either i'm looking in the wrong places, or there's not many options out there other than swapping the whole axle. If there's 6 to 5 lug axle tubes then there's gotta be 8 to 5 somewhere.

04-26-2009, 06:02 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Adaptor for an 8 lug to 6 lug there probably isn't. People are afraid of the liability. you put light duty wheels and adapters on a heavy duty pickup and parts are bound to break. No one wants that liability on there buisness's shoulders. I'm sure the federal DOT would have an opinion as well as most state level DOT. Look in the 4X4 magizines for wheels. I'm sure you can find them, its beena while, but I know I saw some real good looking ones a few years ago. That, or make it a 1/2 ton and get the better wheel selection of a 5 lug set up, cheaper parts, and brake parts that are actually still avalible.

04-26-2009, 09:14 PM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Adaptor for an 8 lug to 6 lug There's a few ppl who can tell you what parts to swap out if you want to do it piece by piece. I would say get the entire front crossmember... from hub to hub, and swap it as a one piece assembly. Makes it easier down the road when you need replacement parts. no need to remember what part is what, just remember the whole front suspention is out of a 74 C/10.... or whatever year you use. The rear is the same way. If it is coil, a 71/72 C/10 12 bolt will bolt right in. If it is leaf spring, then some measureing and figuring what will swap in will be needed... and possibly some welding of mounting pads or shock mounts. Last edited by Longhorn Man; 04-26-2009 at 09:16 PM.

04-26-2009, 09:46 PM	#12
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Adaptor for an 8 lug to 6 lug i wouldnt have much confidence in a caliper or rim or hub or axel with 14holes drilled in the high stress area you'd need to drill into __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

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