The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-06-2011, 06:17 PM   #1
buddylee
Registered User
 
Join Date: Jan 2010
Location: Coventry,RI
Posts: 114
widest wheel and spacing

okay here goes
i have a 68 c20 that i am converting to 1/2 ton. found an 85 chevy for the suspension and rear end. i plan on a 4" drop in the rear and something to match in the front

what is the widest rim and what backspacing do i need?
buddylee is offline   Reply With Quote
Old 10-06-2011, 08:29 PM   #2
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,970
Re: widest wheel and spacing

Quote:
Originally Posted by buddylee View Post
okay here goes
i have a 68 c20 that i am converting to 1/2 ton. found an 85 chevy for the suspension and rear end. i plan on a 4" drop in the rear and something to match in the front

what is the widest rim and what backspacing do i need?
Front? Rear? Both?

This is very subjective too.... What is 'right' for one guy may not be for another. I suggest you get your drop done & take measurements using the wheels available to determine what will/won't work.
__________________
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.
SCOTI is offline   Reply With Quote
Old 10-06-2011, 09:06 PM   #3
Ackattack
Senior Member
 
Ackattack's Avatar
 
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
Re: widest wheel and spacing

also, when you start maximizing sizes, tire selection will also matter.

tubbed rear? front wheel wells? leaf spring rear?

Lots of questions
Ackattack is offline   Reply With Quote
Old 10-06-2011, 09:20 PM   #4
CC69Rat
Registered User
 
CC69Rat's Avatar
 
Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,208
Re: widest wheel and spacing

Check out the "Percy's Wheelrite" tool. You can buy them at Summit. The best $69 I have spent in a while. It will get you really, really close to perfect wheel spacing / tire size, and the true fit that you want your truck to have. It will do 15-20" wheels .. so completely your call.

Another thing to consider is the overall width of the 85 rear end vs. the original 67-mid 69 (55.5") and 70+ (57") plate to plate.

Ex. If someone told you a 20x10 with 5" BS would work on a typical short fleet, your rear axle might be longer / shorter overall and throw it off by 1" or more. I'm not sure how long the 85 model rear end is though.

Seriously .. buy the wheelrite. You'll be glad you did.
__________________
Chad

1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway*
1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy
1986 Silverado Short Fleet - Scarlet *Sold*
1985 Silverado Short Fleet *Sold*
2022 Jeep Gladiator Mojave
2001 Jeep Cherokee XJ 4x4 - Lifted, Built
1992 Jeep Cherokee XJ 4x4 - Lifted
2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)
CC69Rat is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:32 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com