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 09-28-2019, 07:39 PM   #26
Ryanz
Registered User
 
Join Date: Sep 2015
Location: Saskatoon, SK - Canada
Posts: 88
Re: 1972 Blazer Steering

Has anyone used spacers on the back to align the tires? If so, do you know if that helps the wander at all?
Ryanz is offline   Reply With Quote
Old 09-29-2019, 03:35 PM   #27
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Ontario Canada
Posts: 1,120
Re: 1972 Blazer Steering

Quote:
Originally Posted by Ryanz View Post
Has anyone used spacers on the back to align the tires? If so, do you know if that helps the wander at all?
Made no difference when I put them on the rear.
__________________
The one that dies with the most tools, wins !
hemi43 is offline   Reply With Quote
Old 10-12-2019, 08:55 PM   #28
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Just tagging along here... I have a 72 Jimmy, 4x4, 4" new lift, new red head box, alignment complete and after a very frustrating 1.5 years I'm still chasing the front end all over on anything other than a straight road. The only thing that's not new is the steering column.... so I just ordered one. I have sway bars still sitting pretty in their boxes but no idea how to fab them up to work
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-14-2019, 07:36 PM   #29
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Moving this to where I should have posted to start with:I asked about my front driver's side wheel sticking out 1" further than the passenger side.
This from Hemi43:
Measure the distance from the inside of the front tire to the side of the frame. If the measurements are the same, then this will rule out the axle being shifted to one side. I would then look at the front sheet metal being off location. (rotted/broken body mounts or rad support.)
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-14-2019, 07:51 PM   #30
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Berkeley, Ca
Posts: 1,103
Re: 1972 Blazer Steering

I think we'd like to see several pics of your axle, spring perches, axle tubes, and steering linkages to start. Pics of your tire stickout as well general fender/panel fitment may help as well. Plus those measurements asked for above.

SeventyOne is offline   Reply With Quote
Old 10-14-2019, 07:54 PM   #31
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Here's some pics I just took tonight to see if anyone notices anything wrong that would make my steering "dart back and forth" as others described above. I'll do the measurement as Hemi43 suggested tomorrow
Attached Images
   
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-14-2019, 08:07 PM   #32
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Yes Sir, I'll wear ya'll out with photos tomorrow after work. It's darker than dirt here now
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-15-2019, 09:41 AM   #33
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Ontario Canada
Posts: 1,120
Re: 1972 Blazer Steering

I can't see any issues in the pictures. I know you said you had the front aligned already, but i would measure the toe-in to see where it's at. If the alignment shop used factory specs, you won't have enough toe-in. With your large tires I would aim for 3/16". I'm sure everyone is tired of me saying this, but increase your caster with angled shim blocks. The more caster you have, the better your truck will go down the road. (within reason) I have 6 1/2 degrees.

Edit; I just re-read your post and see you have a redhead box. If this is a fast ratio, that may cause some problems, IMO.
__________________
The one that dies with the most tools, wins !
hemi43 is offline   Reply With Quote
Old 10-15-2019, 12:27 PM   #34
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Thank you and I'm never tired of hearing a potential solution! I will certainly set it to your recommended specs. The Jimmy steered the same when I bought it, so I thought installing the new gear box would fix it. Unfortunately it did nothing good or bad.
Two different body shops with frame machines said the frame is good with no signs of damage or altercation. All the spring perches are original and measure correctly. All that to say, you have to be right.
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-15-2019, 02:28 PM   #35
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Berkeley, Ca
Posts: 1,103
Re: 1972 Blazer Steering

Can we see pics of the spring perches and the tire stick out you mentioned?

Assuming all this is good - I'm inclined to agree that it's your toe in setting and possibly caster as mentioned.
SeventyOne is offline   Reply With Quote
Old 10-15-2019, 06:05 PM   #36
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Trying to get the pics to load...
Attached Images
     
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-15-2019, 06:07 PM   #37
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

This was the best way I could show how the driver's wheel sticks out approximately an inch further than the passenger side.
Attached Images
  
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-15-2019, 06:10 PM   #38
jaros44sr
Senior Member
 
jaros44sr's Avatar
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 8,517
Re: 1972 Blazer Steering

grasping at straws here, but do you have a quick ratio steering box and are the u bolt nuts on the steering dampner tight, the pic looks like there is wear on both sides, couldn't blow up the pic large enuff to tell

does that bolt look like its going into the center of the leaf spring in the fifth pic
__________________
Semper Fi...Uncle Sam, you da man

All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
SAFETY FIRST

AS usual, off topic

They say your mind goes second, can't remember the first


Jim

Last edited by jaros44sr; 10-15-2019 at 06:20 PM.
jaros44sr is offline   Reply With Quote
Old 10-15-2019, 07:22 PM   #39
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Here's the Redhead gear(steering) box info for what I put in:
2851: 1968 – 1976 PICKUPS, SUBURBANS, BLAZERS 4X4
Rated 5.00 out of 5 based on 1 customer rating(1 customer review)
From $266.00
PART #2851. Fits most 1968 – 1976 Chevy and GMC Pickups, Suburban’s and Blazers 4WD. This steering gear has a large input shaft, large piston, NOTCHED SECTOR SHAFT (clamp style pitman arm), flair fittings and is the pickup style mount. If you have a sector (output) shaft that the pitman arm is held on with a nut and washer then you the 2WD steering gear, our part number 2850. You can either order this steering gear and change your pitman arm or you can order the 2850.
This gear comes stock as the 15:1 ratio (3 to 3.5 turns lock to lock). If you would the 18:1 ratio (4 – 4.5 turns lock to lock) please order 2851 4T.

On another note: I measured from the inner tire to the frame as per Hemi43's suggestion and the driver's side is 1/2" further to the outside than the passenger. Looks like 2", so maybe the front driver's side finder is causing the illusion.

...and Yes Sir, the bolt is somehow bent at the end. No telling how those morons did that?
__________________
72' JIMMY 454
-Damon

Last edited by BIG BLOCK JIMMY; 10-15-2019 at 07:28 PM.
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-15-2019, 07:38 PM   #40
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Berkeley, Ca
Posts: 1,103
Re: 1972 Blazer Steering

Can we see the axle tubes and the spring perches on the axle.

Also its still a 6 lug truck, right?
SeventyOne is offline   Reply With Quote
Old 10-15-2019, 08:20 PM   #41
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Yes it's a 6 lug
Attached Images
     
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-15-2019, 08:22 PM   #42
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Last one
Attached Images
 
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-15-2019, 09:01 PM   #43
simicrintz
Registered User
 
Join Date: Dec 2017
Location: Escondido
Posts: 260
Re: 1972 Blazer Steering

Quote:
Originally Posted by SeventyOne View Post
I think we'd like to see several pics of your axle, spring perches, axle tubes, and steering linkages to start. Pics of your tire stickout as well general fender/panel fitment may help as well. Plus those measurements asked for above.
Can you get one where we can see the linkage and the pitman arm? Like from the front of the truck looking back.
__________________
-Bruce
1971 K5 Blazer 4WD
simicrintz is offline   Reply With Quote
Old 10-16-2019, 08:16 AM   #44
A1971Blazer
Senior Member
 
A1971Blazer's Avatar
 
Join Date: Nov 2013
Location: East Tennessee
Posts: 1,203
Re: 1972 Blazer Steering

It looks like you've covered every possibility and.....
maybe you have...but did you check to see if the axle tube on the passenger side is bent?
At some point in it's life....it may have taken a hit...?
__________________
1970 Chevrolet K/5 Blazer
1972 Chevrolet K/5 Blazer
.............

Last edited by A1971Blazer; 10-16-2019 at 08:28 AM.
A1971Blazer is offline   Reply With Quote
Old 10-16-2019, 09:42 AM   #45
jaros44sr
Senior Member
 
jaros44sr's Avatar
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 8,517
Re: 1972 Blazer Steering

Do you have a second person to turn the steering wheel while you look underneath for any movement

Are all four wheels and tires the same? But, my eclipse hated different tires on the back axle
__________________
Semper Fi...Uncle Sam, you da man

All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
SAFETY FIRST

AS usual, off topic

They say your mind goes second, can't remember the first


Jim
jaros44sr is offline   Reply With Quote
Old 10-16-2019, 02:40 PM   #46
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Berkeley, Ca
Posts: 1,103
Re: 1972 Blazer Steering

I'd also try to measure rim width. That tire stick out is weird...

Did you install the rims/tires or buy it with those on there?
SeventyOne is offline   Reply With Quote
Old 10-16-2019, 03:29 PM   #47
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Tires/wheels came with the truck. Tires are the same and the wheels appear to be the same, but if I have to I will have them removed to measure.

I'll have my wife turn the steering wheel while under it again, in case I missed something before.

I did check the steering stabilizer tightness and it was good. I thought about taking it off, just for the "why not" sake of trying something.

I'm going to get the toe-in and caster adjusted as suggested as quickly as possible and will rotate the tires just in case a tire is bad (highly unlikely).
__________________
72' JIMMY 454
-Damon
BIG BLOCK JIMMY is offline   Reply With Quote
Old 10-16-2019, 03:52 PM   #48
Blazerowner
Senior Member
 
Blazerowner's Avatar
 
Join Date: Apr 2006
Location: Sutter, Ca
Posts: 1,644
Re: 1972 Blazer Steering

Measure your spindle and everything when you have it apart. The tires should be the same on both sides and that variance is odd. You can take a measurement from the knuckle to the mounting point for the rim and see if it is longer than the other side. It could also be the backspacing on the rim. If it’s the rim replace them. Measure your knuckle distance from where it mounts on the tube and the ball joints mount. I doubt it’s that but who knows. I’ve seen worse.
__________________
Kirk
72 Blazer CST 4wd highlander
70 Chevelle Malibu
Blazerowner is offline   Reply With Quote
Old 10-16-2019, 03:58 PM   #49
Blazerowner
Senior Member
 
Blazerowner's Avatar
 
Join Date: Apr 2006
Location: Sutter, Ca
Posts: 1,644
Re: 1972 Blazer Steering

I just checked my kick out on the tires using the straight edge and they are nearly identical on both sides. Definitely figure out what’s up with that variance. I bet that’s your problem.
__________________
Kirk
72 Blazer CST 4wd highlander
70 Chevelle Malibu
Blazerowner is offline   Reply With Quote
Old 10-16-2019, 05:06 PM   #50
BIG BLOCK JIMMY
Registered User
 
BIG BLOCK JIMMY's Avatar
 
Join Date: Jul 2018
Location: NC and WV
Posts: 123
Re: 1972 Blazer Steering

Is this the correct ratio for the steering box?: 15:1 ratio (3 to 3.5 turns lock to lock)

Will do Blazerowner, thanks
__________________
72' JIMMY 454
-Damon

Last edited by BIG BLOCK JIMMY; 10-16-2019 at 05:13 PM.
BIG BLOCK JIMMY is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 12:26 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com