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 08-06-2019, 11:20 PM   #1
70StepsideC10
Registered User
 
Join Date: Jul 2016
Location: Toronto, Ontario
Posts: 39
Can a stepside bed be shifted/centred?

I searched around the site but could not find a definitive answer to my question. While measuring the rear of my truck for new wheels and tires I realized that the stepside fenders are not centred over the wheels left to right. What I have found is that the rear end is centred, the box seems to be close to centred, but the driver side fender sticks out further from the wheel mounting surface than the passenger side. The fenders are aftermarket, installed by a PO during the restoration, and it appears that the driver side fender is 3/4" wider than the passenger side fender. As a result, the wheels/tires do not sit evenly in the fenders, the driver side is sunk in a bit and the passenger side is pretty much flush with the edge of the fender. Is it possible to shift the entire bed assembly towards the passenger side so that the fenders appear centred over the wheels? I would only need to move it about 3/8" to accomplish this. I know this doesn't seem like much, but it is rather noticeable. There are 8 bolts that hold the bed on, and I took a look underneath and it doesn't look like the holes are slotted so not sure if the bed can be shifted.
70StepsideC10 is offline   Reply With Quote
Old 08-07-2019, 06:35 PM   #2
outfield
Registered User
 
Join Date: Apr 2016
Location: Portland, Or
Posts: 387
Re: Can a stepside bed be shifted/centred?

Hi Stepside,

There should be 6 bolts that attach the bed to the truck frame. You will see the round tops of the bolts when you look at your bed floor. Loosen up the nuts and shift away.

I would double check that the frame is centered over the axle. The axle track rod runs from the axle to the truck frame. If the frame is not centered, you can get an adjustable track rod to center it up.

The bed will shift left to right as the suspension cycles. The track rod is what keeps the bed in place left to right.
outfield is offline   Reply With Quote
Old 08-07-2019, 10:36 PM   #3
70StepsideC10
Registered User
 
Join Date: Jul 2016
Location: Toronto, Ontario
Posts: 39
Re: Can a stepside bed be shifted/centred?

Thanks for the info outfield. In my bed I have 8 bolts, it is a wood bed so not sure if that makes a difference in the number of bolts. There are 6 further forward in the bed, and 2 right at the back just inside the tailgate. They appear to attach to the end of the frame. I'm assuming that since the holes are not slotted then the bolts will just sort of 'lean' a bit when the bed is shifted, since the bolts can't actually slide in the frame holes?

The axle is fairly centred in the frame, I don't remember the exact measurement but it is definitely not 3/4" off. I can recheck, but it was almost right on centre. Either way I will be installing an adjustable track bar when I lower the truck and will ensure the rear end is centred.

One thought I had today was if I could use the adjustable track bar to shift the axle over the 3/8" I need, instead of shifting the bed. The axle wouldn't be centred in the frame, but it would be centred in the fenders. Is there any issue with having the rear end off centre slightly?
70StepsideC10 is offline   Reply With Quote
Old 08-08-2019, 05:18 AM   #4
KMAT
Registered User
 
Join Date: Oct 2018
Location: Sioux center, IA
Posts: 81
Re: Can a stepside bed be shifted/centred?

From my knowledge moving rear over out of center will put stress on u-jionts and rear pinion. I would suggest NOT moving rearend off center
KMAT is offline   Reply With Quote
Old 08-08-2019, 08:19 AM   #5
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,716
Re: Can a stepside bed be shifted/centred?

Yes there is some adjustment when the bolts are loosened. Are the washers off centered like factory.? It's a little nerve wracking making the holes but in the long run it's better.
Attached Images
  
__________________
Mark
72 c20 custom camper Husky edition,
66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,
1968 c20 stepside ,85 K20
1977 Suburban sold
68 anniversary.
72c20customcamper is offline   Reply With Quote
Old 08-08-2019, 08:33 AM   #6
67C10Step
Registered User
 
67C10Step's Avatar
 
Join Date: Jul 2019
Location: Beebe, AR
Posts: 2,475
Re: Can a stepside bed be shifted/centred?

I would not want to shift the rear diff as that brings a lot of driveline and suspension geometry issues that are way more concerning than just visual.

Shifting the bed seems best as long as it's not so far as to make the box to cab centering off enough to be noticeable. Whatever you find that works please post back. My project is a stepper and anything someone learns I'd like to hear just in case I need that same trick down the road.
67C10Step is offline   Reply With Quote
Old 08-08-2019, 09:53 AM   #7
outfield
Registered User
 
Join Date: Apr 2016
Location: Portland, Or
Posts: 387
Re: Can a stepside bed be shifted/centred?

The opening that the bolts go through down at the frame location give you some wiggle room to shift the bed sideways. This is how they centered the bed at the factory.
outfield is offline   Reply With Quote
Old 08-10-2019, 12:11 AM   #8
70StepsideC10
Registered User
 
Join Date: Jul 2016
Location: Toronto, Ontario
Posts: 39
Re: Can a stepside bed be shifted/centred?

I wasn't so sure that shifting the rear end off centre was a good idea, and you guys confirmed that for me. I am going to re-measure everything, maybe centring the axle will make up a little bit of the difference, though I think it's pretty close already, then I will only have to shift the bed a little bit. This all seems like a lot of work for 3/8", but I want to run wider tires and this 3/4" difference from left to right would be noticeable because the passenger side tire would stick out to the edge of the fender or even outside the fender.



Quote:
Originally Posted by 72c20customcamper View Post
Yes there is some adjustment when the bolts are loosened. Are the washers off centered like factory.? It's a little nerve wracking making the holes but in the long run it's better.
Yes, the washers look like the ones in your photos, with the holes offset.



Quote:
Originally Posted by 67C10Step View Post
I would not want to shift the rear diff as that brings a lot of driveline and suspension geometry issues that are way more concerning than just visual.

Shifting the bed seems best as long as it's not so far as to make the box to cab centering off enough to be noticeable. Whatever you find that works please post back. My project is a stepper and anything someone learns I'd like to hear just in case I need that same trick down the road.
I haven't actually measured this part yet, but from looking at it it looks like the cab and box are not perfectly centred. It seems like the box is slightly closer to the driver side of the cab, so when I shift the bed to the passenger side it won't be way off centre from the cab. I think it will be close enough that it won't be noticeable. And I will post once I get this sorted out so others know what to do if they have the same issue.



Quote:
Originally Posted by outfield View Post
The opening that the bolts go through down at the frame location give you some wiggle room to shift the bed sideways. This is how they centered the bed at the factory.
Good to know. I'll give this a shot, hopefully I can get everything lined up since I only have to go 3/8".
70StepsideC10 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 07:22 AM.


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