Front & Rear bolt patterns different...adapter? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Navy Mechanic · 12-14-2010, 06:56 PM

Found out today that I have 5X5 front and 5X5 1/2 rear bolt patterns. This makes for an expensive and limited choice in rims. I can install 5X4 1/2 adapters which would help with rim selection. Never used them. Other than accounting for the extra inch when factoring back space, etc...are there any other concerns or considerations?

Thanks.

MrDude_1 · 12-14-2010, 07:51 PM

theres mostly just the space issue.. 3/4" is alot of movement for a wheel... assuming everything clears:
first time you use them, its a pain because you SHOULD take the wheel back off after a short drive, and re-check that the adapter to axle lugs are still tight.

other then that, you just bolt them on and thats it.

dznucks · 12-14-2010, 08:29 PM

You should be able to swap the front spindles out to match the rears. you could also swap the rear axles out, but that could get more expensive. I would stay away from adapters.

Were they like this when you bought the truck?

**N2TRUX** · 12-14-2010, 08:34 PM

What rear axle do you have that has the 5x5.5" pattern? Is it a GM axle with re-drilled a shafts or something else? If it were me, I would spend the money on new axle shafts rather than adapters.

Navy Mechanic · 12-15-2010, 03:07 PM

Quote:

What rear axle do you have that has the 5x5.5" pattern? Is it a GM axle with re-drilled a shafts or something else? If it were me, I would spend the money on new axle shafts rather than adapters.

I'm not sure what axle I have. Doesn't look like a ford which would be the most likely swap. It looks like your standard 10 bolt GM rear end...although the rear cap's a little different from the one on my 77 camaro. Crawling under today to see if I can ID it.

**lolife99** · 12-15-2010, 03:22 PM

I'm curious also.
You are measuring the "bolt circle" correct?
Not just between lug studs.

Navy Mechanic · 12-15-2010, 04:00 PM

Quote:

I'm curious also.
You are measuring the "bolt circle" correct?
Not just between lug studs.

This is not the site I used but the method is the same.

http://www.mrt-wheels.com/boltpattern.html

SCOTI · 12-15-2010, 04:51 PM

Looks like a 10bolt but w/5x5.5" bolt pattern? Dodge truck maybe?

Navy Mechanic · 12-15-2010, 04:59 PM

Quote:

Looks like a 10bolt but w/5x5.5" bolt pattern? Dodge truck maybe?

It's a possibility. 5X5 1/2 is listed as a Dodge & Ford truck/van bolt pattern.

Here's some pics. What do you think?

SCOTI · 12-15-2010, 06:02 PM

I'm betting Dodge.

One suggestion.... get some shock relocator brackets or modify those to get a better angle. It would allow your rear shocks to function better (they appear to be almost laying down).

http://67-72chevytrucks.com/vboard/s...d.php?t=359399

**lolife99** · 12-16-2010, 12:03 PM

Get ECE's Super Track Bar. (www.earlyclassic.com)
It attaches from the frame mount all the way across, to the passenger side trailing arm.

Navy Mechanic · 12-16-2010, 12:18 PM

Quote:

Originally Posted by lolife99

Get ECE's Super Track Bar. (www.earlyclassic.com)
It attaches from the frame mount all the way across, to the passenger side trailing arm.

Awesome! Thanks. Any help with my 2/4 drop thread? That one's got me bothered. Thanks again.

12-14-2010, 06:56 PM	#1
Navy Mechanic Registered User Join Date: Nov 2010 Location: Richmond, TX. Posts: 127	Front & Rear bolt patterns different...adapter? Found out today that I have 5X5 front and 5X5 1/2 rear bolt patterns. This makes for an expensive and limited choice in rims. I can install 5X4 1/2 adapters which would help with rim selection. Never used them. Other than accounting for the extra inch when factoring back space, etc...are there any other concerns or considerations? Thanks. __________________ *"Once a Chief, always a Chief!" MCPO (ret)* 03 2500HD- 'Daily driver' 67 Short Fleet- 'Drivable project!' 11 Malibu LTZ- 'The Wife's ride'

12-14-2010, 07:51 PM	#2
MrDude_1 Registered User Join Date: Aug 2010 Location: Charleston, SC Posts: 311	Re: Front & Rear bolt patterns different...adapter? theres mostly just the space issue.. 3/4" is alot of movement for a wheel... assuming everything clears: first time you use them, its a pain because you SHOULD take the wheel back off after a short drive, and re-check that the adapter to axle lugs are still tight. other then that, you just bolt them on and thats it.

12-14-2010, 08:29 PM	#3
dznucks Registered User Join Date: Feb 2006 Location: Smyrna, Ga Posts: 1,647	Re: Front & Rear bolt patterns different...adapter? You should be able to swap the front spindles out to match the rears. you could also swap the rear axles out, but that could get more expensive. I would stay away from adapters. Were they like this when you bought the truck? Last edited by dznucks; 12-14-2010 at 08:31 PM.

12-14-2010, 08:34 PM	#4
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: Front & Rear bolt patterns different...adapter? What rear axle do you have that has the 5x5.5" pattern? Is it a GM axle with re-drilled a shafts or something else? If it were me, I would spend the money on new axle shafts rather than adapters. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

12-15-2010, 03:22 PM	#6
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: Front & Rear bolt patterns different...adapter? I'm curious also. You are measuring the "bolt circle" correct? Not just between lug studs. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-15-2010, 04:51 PM	#8
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,082	Re: Front & Rear bolt patterns different...adapter? Looks like a 10bolt but w/5x5.5" bolt pattern? Dodge truck maybe? __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

12-15-2010, 06:02 PM	#10
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,082	Re: Front & Rear bolt patterns different...adapter? I'm betting Dodge. One suggestion.... get some shock relocator brackets or modify those to get a better angle. It would allow your rear shocks to function better (they appear to be almost laying down). http://67-72chevytrucks.com/vboard/s...d.php?t=359399 __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.* Last edited by SCOTI; 12-15-2010 at 06:03 PM.

12-16-2010, 12:03 PM	#11
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: Front & Rear bolt patterns different...adapter? Get ECE's Super Track Bar. (www.earlyclassic.com) It attaches from the frame mount all the way across, to the passenger side trailing arm. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 12-16-2010 at 12:03 PM.



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