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 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-06-2007, 01:06 PM   #1
bigjohn7372
Registered User
 
bigjohn7372's Avatar
 
Join Date: Dec 2007
Location: Marcy NY
Posts: 35
offset

I have a 72 Blazer and want to put mickey thompson classic II's with 33" BFG's, what offset should I get to make it look right. I don't want the tires tucked inside the body. Also, what's the shortest lift I could get away with, and what else would I have to change along with the lift? Thanks from the newbie!
bigjohn7372 is offline   Reply With Quote
Old 12-06-2007, 03:05 PM   #2
bouncytruck
SKINNY TIRES RULE!
 
bouncytruck's Avatar
 
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,049
Re: offset

Welcome to the board from Seattle. Post some pics of your rig when you get a chance.

Sorry, I don't know the off-set, but someone will. You can run 33's without a lift if you're running skinny tires/wheels and don't plan to do any hard core wheeling. 2" - 4" should be sufficient with some wider, meatier tires.
__________________
bouncytruck 1972 K5
The Hauler 1994 K1500 Suburban
The Daily2010 Kia Soul
Wife's Ride2014 Fiat 500L
bouncytruck is offline   Reply With Quote
Old 12-06-2007, 06:13 PM   #3
vtblazer
Registered User
 
vtblazer's Avatar
 
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
Re: offset

Quote:
Originally Posted by bigjohn7372 View Post
I have a 72 Blazer and want to put mickey thompson classic II's with 33" BFG's, what offset should I get to make it look right. I don't want the tires tucked inside the body. Also, what's the shortest lift I could get away with, and what else would I have to change along with the lift? Thanks from the newbie!
Welcome to the board, might I suggest taking some time and surfing through some threads, tons and tons of great info here, including the answers to the question's your asking.

A 4" back spacing is about the max, anything more and you'll hit the tie rod ends.

Lift with 33's all depends on your expected usage, give us more info to go on so we can provide better answers.

Pics are a good thing...

Last edited by vtblazer; 12-06-2007 at 06:13 PM.
vtblazer is offline   Reply With Quote
Old 12-07-2007, 06:49 AM   #4
Blazer1970
Registered User
 
Blazer1970's Avatar
 
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
Re: offset

An 8 inch wheel with 3 1/2" backspacing works good for 33X12.50s. As far as lift, I have been running 33X12.50 BFG A/Ts on my blazer with stock suspension (no lift) for a few years and they have never rubbed. This is with mostly street and some light off-road use (never really twisted up). 33s will rub on a 4 inch lift if you really twist up the suspension.
__________________
Tim
Blazer1970 is offline   Reply With Quote
Old 12-07-2007, 08:09 AM   #5
bigjohn7372
Registered User
 
bigjohn7372's Avatar
 
Join Date: Dec 2007
Location: Marcy NY
Posts: 35
Re: offset

Thanks for the info guys! I'll post pics as soon as she gets here...she's in transit from SW Missouri to NY as we speak. Only problem is I have 8" of fresh snow I don't plan on doing any off-roading with my blazer, she will be strickly on-road only. It sounds like I want mine set up like blazer1970's. Do you have pics on here? Is backspacing what you do to move the rear axle back? What is involved? I have some mechanic skill but have never done any type of lift/backspacing. I did look through most of the blazer thread, but if you find one that answers my ?'s, throw me the link! Thanks
bigjohn7372 is offline   Reply With Quote
Old 12-07-2007, 02:28 PM   #6
Magnuman
Registered User
 
Join Date: Nov 2007
Location: San Francisco,CA
Posts: 130
Re: offset

Quote:
Originally Posted by Blazer1970 View Post
An 8 inch wheel with 3 1/2" backspacing works good for 33X12.50s. As far as lift, I have been running 33X12.50 BFG A/Ts on my blazer with stock suspension (no lift) for a few years and they have never rubbed. This is with mostly street and some light off-road use (never really twisted up). 33s will rub on a 4 inch lift if you really twist up the suspension.
Do your tires stick out past the fender well?
Magnuman is offline   Reply With Quote
Old 12-07-2007, 02:38 PM   #7
bigjohn7372
Registered User
 
bigjohn7372's Avatar
 
Join Date: Dec 2007
Location: Marcy NY
Posts: 35
Re: offset

Not exactly sure because the truck is on it's way to my house as we speak. I'd like them to stick out a little past the fender...I like that look. Can you get a different back spacing for the rear rims to push them out further so they are more in line with the fronts?
bigjohn7372 is offline   Reply With Quote
Old 12-07-2007, 04:55 PM   #8
LUV2XCLR8
The LuvShack Garage
 
LUV2XCLR8's Avatar
 
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,484
Re: offset

Since both the Blazers and the Jimmys have an offset tire footprint (Front width is
wider than rear width) anything bigger than stock on a 8"+ rim will stick out a lil
__________________
Owner/Op: "TN Classic Transport Carriers"
The Toy: "Square Vette" 72 Hybrid Blazer
Toy Barn: "LuvShack" 40 x 60 x 20 Shop
Tow Piggy:"Maddy" 88 Silverado 3500
Hauler: "Feathers" 14 Aluma 8218T
LUV2XCLR8 is offline   Reply With Quote
Old 12-07-2007, 05:34 PM   #9
Blazer1970
Registered User
 
Blazer1970's Avatar
 
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
Re: offset

Quote:
Originally Posted by Magnuman View Post
Do your tires stick out past the fender well?
The sidewall bulge of the front tire is probably about even with the top lip (widest part) of the fender. The rears are tucked in a couple of inches. My Blazer is in storage right now so I can't look at it easily. The tires do not have that "look" like they are sticking out. The wheels are stock 15X8 rallies that came on an '87 Suburban. They have the same offset as the older style truck rallies.
Attached Images
 
__________________
Tim
Blazer1970 is offline   Reply With Quote
Old 12-07-2007, 06:26 PM   #10
Magnuman
Registered User
 
Join Date: Nov 2007
Location: San Francisco,CA
Posts: 130
Re: offset

Quote:
Originally Posted by LUV2XCLR8 View Post
Since both the Blazers and the Jimmys have an offset tire footprint (Front width is
wider than rear width) anything bigger than stock on a 8"+ rim will stick out a lil

Is there any problems with using a 10" rim in the rear and and 8 in the front on a 4wd application?
Magnuman is offline   Reply With Quote
Old 12-07-2007, 06:29 PM   #11
Magnuman
Registered User
 
Join Date: Nov 2007
Location: San Francisco,CA
Posts: 130
Re: offset

Quote:
Originally Posted by LUV2XCLR8 View Post
Since both the Blazers and the Jimmys have an offset tire footprint (Front width is
wider than rear width) anything bigger than stock on a 8"+ rim will stick out a lil
Is that done because of the 4WD ?
Magnuman is offline   Reply With Quote
Old 12-08-2007, 08:55 AM   #12
bigjohn7372
Registered User
 
bigjohn7372's Avatar
 
Join Date: Dec 2007
Location: Marcy NY
Posts: 35
Re: offset

blazer 1970, nice looking blazer. what type of soft top is that. it's the nicest style i've seen.
bigjohn7372 is offline   Reply With Quote
Old 12-08-2007, 03:24 PM   #13
LUV2XCLR8
The LuvShack Garage
 
LUV2XCLR8's Avatar
 
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,484
Re: offset

You could run 8's and 10's if you really wanted to, and Yes it's because they are 4wd.
The 2wd's do not share the same footprint, IIRC the offset is to get better traction
__________________
Owner/Op: "TN Classic Transport Carriers"
The Toy: "Square Vette" 72 Hybrid Blazer
Toy Barn: "LuvShack" 40 x 60 x 20 Shop
Tow Piggy:"Maddy" 88 Silverado 3500
Hauler: "Feathers" 14 Aluma 8218T
LUV2XCLR8 is offline   Reply With Quote
Old 12-08-2007, 05:04 PM   #14
Blazer1970
Registered User
 
Blazer1970's Avatar
 
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
Re: offset

Quote:
Originally Posted by bigjohn7372 View Post
blazer 1970, nice looking blazer. what type of soft top is that. it's the nicest style i've seen.
It is a Kayline top.
__________________
Tim
Blazer1970 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 11:12 PM.


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