crooked bed or bent frame? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**cdub2010** · 03-21-2020, 02:53 PM

Finally got my truck back to together. The bed is about 1 inch higher on the pass side and the body lines all seem to line up. I assembled the wood bed on the frame and then tightened everything down. I really don't remember the frame being twisted or bent, it was a replacement frame. What makes more sense? bent frame or crooked bed install?

**truckster** · 03-21-2020, 03:00 PM

How are the body mounts?

**Sheepdip** · 03-21-2020, 03:08 PM

If the cab mounts are good... shim the bed to height and forget about it.

**kidatheart** · 03-21-2020, 03:19 PM

How does the gap between cab and bed on each side compare? If you shim back of bed you will have to deal with adjusting bumper, too. Could be a difference in rear springs from side to side, also.

**cdub2010** · 03-21-2020, 03:32 PM

I just checked the body mounts, looks like this frame was going to be cut down as the body mount brackets are bolted to the frame. Didn't notice that before.

The cab mounts are new poly bushings. The rear springs may culprit, ill have to take it out to flat ground and measure. Im thinking just shim drivers side back bed mount and go from there, since the front bed panel follows the cab trim line fine.

**kidatheart** · 03-21-2020, 04:51 PM

I would get it on flat ground and put a jack under the frame at the rear on the drivers side and raise it up a little and see if it squares everything up. Look down the side and see if the body lines are straight down the side and see if the vertical cab to bed gap is even. If so, spring is probably the culprit.

**ohboy321** · 03-22-2020, 12:55 PM

I had a similar issue. After putting in new springs my frame was 1/4" lower on the left side, but the bed was off by 1-1/2".

I shimmed the bed level and then readjusted the bumper and exhaust to match.

chewychevy67 · 03-22-2020, 02:09 PM

I too had the same problem. Tailgate wouldn't close on the left side properly. I added a 1/4 inch spacer at the last left side bed mount and now it works perfectly.

c60clf · 03-22-2020, 04:20 PM

Likely frame or spring issue, recommend placing on 4 jack stands ,if problem dissapears it's spring problem

**Grumpy old man** · 03-22-2020, 05:49 PM

Chevy twist tons of threads on it ,

Chevy twist, pretty common . frame machine to straighten it out or half a dozen different ways to use spacers to make it "look " right

https://www.google.com/search?domain...D%3A1%3B&hl=en

03-21-2020, 02:53 PM	#1
cdub2010 Senior Member Join Date: Apr 2014 Location: detroit mi Posts: 209	crooked bed or bent frame? Finally got my truck back to together. The bed is about 1 inch higher on the pass side and the body lines all seem to line up. I assembled the wood bed on the frame and then tightened everything down. I really don't remember the frame being twisted or bent, it was a replacement frame. What makes more sense? bent frame or crooked bed install? Attached Images

03-21-2020, 03:00 PM	#2
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,941	Re: crooked bed or bent frame? How are the body mounts? __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

03-21-2020, 03:08 PM	#3
Sheepdip Senior Member Join Date: Nov 2018 Location: Waterford California Posts: 2,569	Re: crooked bed or bent frame? If the cab mounts are good... shim the bed to height and forget about it.

03-21-2020, 03:19 PM	#4
kidatheart Senior Member Join Date: May 2012 Location: Assaria, Ks Posts: 465	Re: crooked bed or bent frame? How does the gap between cab and bed on each side compare? If you shim back of bed you will have to deal with adjusting bumper, too. Could be a difference in rear springs from side to side, also.

03-21-2020, 03:32 PM	#5
cdub2010 Senior Member Join Date: Apr 2014 Location: detroit mi Posts: 209	Re: crooked bed or bent frame? I just checked the body mounts, looks like this frame was going to be cut down as the body mount brackets are bolted to the frame. Didn't notice that before. The cab mounts are new poly bushings. The rear springs may culprit, ill have to take it out to flat ground and measure. Im thinking just shim drivers side back bed mount and go from there, since the front bed panel follows the cab trim line fine.

03-21-2020, 04:51 PM	#6
kidatheart Senior Member Join Date: May 2012 Location: Assaria, Ks Posts: 465	Re: crooked bed or bent frame? I would get it on flat ground and put a jack under the frame at the rear on the drivers side and raise it up a little and see if it squares everything up. Look down the side and see if the body lines are straight down the side and see if the vertical cab to bed gap is even. If so, spring is probably the culprit.

03-22-2020, 12:55 PM	#7
ohboy321 Senior Member Join Date: Aug 2015 Location: Dunbarton, NH Posts: 282	Re: crooked bed or bent frame? I had a similar issue. After putting in new springs my frame was 1/4" lower on the left side, but the bed was off by 1-1/2". I shimmed the bed level and then readjusted the bumper and exhaust to match. Attached Images __________________ Steve/NH 1967 K10 327 Short Bed Stepside 2008 F350 Power Stroke Lariat 2007 BMW X3 2023 BMW X3 M-Sport 2020 BMW 540xi M-Sport 1995 Harley FLSTC

03-22-2020, 02:09 PM	#8
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,521	Re: crooked bed or bent frame? I too had the same problem. Tailgate wouldn't close on the left side properly. I added a 1/4 inch spacer at the last left side bed mount and now it works perfectly.

03-22-2020, 04:20 PM	#9
c60clf Registered User Join Date: Nov 2009 Location: edinburg va Posts: 115	Re: crooked bed or bent frame? Likely frame or spring issue, recommend placing on 4 jack stands ,if problem dissapears it's spring problem

03-22-2020, 05:49 PM	#10
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: crooked bed or bent frame? Chevy twist tons of threads on it , Chevy twist, pretty common . frame machine to straighten it out or half a dozen different ways to use spacers to make it "look " right https://www.google.com/search?domain...D%3A1%3B&hl=en Attached Images __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop



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