My bed is biting my cab (frame flex) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69K10 Tank · 09-16-2003, 06:34 PM

Anyone who 4wheels a 67-72 chevy know how much the frame flexes. Well mine is doing it so much that the top bolts that hold the bedsides on are gouging and denting the cab when it flexes. My question is, how can I stop this? Cause I really don't want to keep beating up my cab. Any thought would be appreciated. Thanks

GreenMystChevy · 09-16-2003, 06:40 PM

I don't know how effective or safe it would be but you could think about putting some sort of large, homemade rubber washer between the bolt and cab. Something softer than a bolt but hard enough not to rip or tear out.

wildwood · 09-16-2003, 06:59 PM

Loosen the bolts to your box, pull the box as far back as you can. Then tighten them up again. If thats not enough, you'll have to reem the holes longer or drill new holes futher back. You might have to move your bumper back as well. Good luck, hope this helps.

HeavyK20 · 09-17-2003, 08:10 AM

Are your cab mounts rotted? If the rubber is cracked and broke down the cab might be sagging.

**CUSTOM/10** · 09-17-2003, 08:12 AM

I drilled new holes about 1" further back on all the brackets were the bed mounts to the frame, this corrected the problem for me.

Hope this helps.

J.Lance · 09-17-2003, 06:16 PM

In addition to moving the bed back, if you still have hex head bolts on the header, replace them with the phillips pan head bolt used on a lot of the beds.

09-16-2003, 06:34 PM	#1
69K10 Tank Registered User Join Date: Aug 2003 Location: Olypmia, Wa Posts: 49	My bed is biting my cab (frame flex) Anyone who 4wheels a 67-72 chevy know how much the frame flexes. Well mine is doing it so much that the top bolts that hold the bedsides on are gouging and denting the cab when it flexes. My question is, how can I stop this? Cause I really don't want to keep beating up my cab. Any thought would be appreciated. Thanks

09-16-2003, 06:40 PM	#2
GreenMystChevy Registered User Join Date: Jan 2002 Location: Woodinville, WA Posts: 513	I don't know how effective or safe it would be but you could think about putting some sort of large, homemade rubber washer between the bolt and cab. Something softer than a bolt but hard enough not to rip or tear out. __________________ Jeremy '71 C-10 '72 GMC K2500 '72 Nova (Dad's) '70 Chevelle SS '55 Sedan Delivery Attempting to build up this here 4x4...make her real tall and purty...well, maybe just tall

09-16-2003, 06:59 PM	#3
wildwood Registered User Join Date: Jun 2003 Location: Calgary AB Posts: 110	Loosen the bolts to your box, pull the box as far back as you can. Then tighten them up again. If thats not enough, you'll have to reem the holes longer or drill new holes futher back. You might have to move your bumper back as well. Good luck, hope this helps. __________________ You can't get out if ya don't get in

09-17-2003, 08:10 AM	#4
HeavyK20 Registered User Join Date: Dec 2001 Location: New Richmond, WI Posts: 547	Are your cab mounts rotted? If the rubber is cracked and broke down the cab might be sagging. __________________ Eric 1969 K20, 465/205 package

09-17-2003, 06:16 PM	#6
J.Lance Too many is never enough! Join Date: May 2003 Location: Idaho Falls, ID Posts: 455	bed In addition to moving the bed back, if you still have hex head bolts on the header, replace them with the phillips pan head bolt used on a lot of the beds. __________________ Jason 1968 K10 SWB Fleetside 1971 K2500 GMC LWB 1968 K20 (later frame, donor body) 1972 C20 LWB parts truck 1993 K2500 Suburban, tow rig, 454, 4L80E NEW!! 18' Siem's car hauler 2004 Honda Odyssey (family man!)

09-17-2003, 08:12 AM	#5
CUSTOM/10 Senior Member Join Date: May 2003 Location: Sandown, NH Posts: 2,801	I drilled new holes about 1" further back on all the brackets were the bed mounts to the frame, this corrected the problem for me. Hope this helps.



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