Rocker/Torsion Box Replacement - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kw · 03-14-2007, 11:22 AM

Hey all,

I've done some looking thru the search feature here, and seem to recall having seen someone showing the how-tos of replacing rocker boxes. Is there any information available here?

Thanks.

Chevyman63 · 03-15-2007, 05:26 AM

May help?

http://67-72chevytrucks.com/vboard/s...d.php?t=142041

kw · 03-15-2007, 08:35 AM

That's a big help!

Thanks!

Huck · 03-16-2007, 09:19 AM

Probably the most important point here is to make sure you maintain the deminsional relationships of the firewall--windshield frame to the rear quarters. Two ways to do this--1- is to keep the top on and bolted in place but make sure the door alignment is correct before removing them as the top does have some play front to rear if the torque boxes are crap.
Other method is to build some braces between the door pillars---A===B. I prefer the top method as it is more exact. If you weld in stuff without ensuring this alignment, you will never get it right~~~ask me how I know!!

pound41 · 03-16-2007, 03:40 PM

Keep the top on like Huck said. I have one blazer and it's rockerboxes are gone. With the top on the doors and reveals are great. Take the top off and they fade. Also I will soon be at the point of putting one sides rockerbox on. I am not local but I am only in Northern Va. Good Luck

kw · 03-17-2007, 08:51 AM

I'm just down the road from you, in Calvert County.

The floorpans are hash, rocker boxes are pretty bad, but the bed and windshield frame look OK. Quarter panels, kick panels, A post, B post etc will need replacement as well. From the amount of cancer on the floorpans, I am thinking about doing the complete floor replacement, but not sure of the differences between the Blazer floor and pickup floor, and whether I have a high hump or low hump vehicle. It's 4X4.

Maybe it's best to hop a plane and get another vehicle out west. But then what do I do with what I already have.

Chevyman63 · 03-17-2007, 10:23 AM

Quote:

Originally Posted by kw

Maybe it's best to hop a plane and get another vehicle out west. But then what do I do with what I already have.

I think this same thought about every other day.

kw · 03-17-2007, 04:35 PM

Here's a shot of the hump..

High? Low? Medium?

I was out in Arizona last August on a job interview in Gilbert. Saw a bunch of old Chevy trucks. They sure age well out there.

LUV2XCLR8 · 03-17-2007, 09:28 AM

Being a 4x4 it is most likely a High hump, but GM did alot of crazy stuff,
IIRC All High humps are bolt in, and All Low humps are made to the floor.

03-14-2007, 11:22 AM	#1
kw Registered User Join Date: Jul 2000 Location: Owings, MD Posts: 119	Rocker/Torsion Box Replacement Hey all, I've done some looking thru the search feature here, and seem to recall having seen someone showing the how-tos of replacing rocker boxes. Is there any information available here? Thanks.

03-15-2007, 05:26 AM	#2
Chevyman63 Can't wait to retire!! Join Date: Feb 2003 Location: Corunna, MI Posts: 1,575	Re: Rocker/Torsion Box Replacement May help? http://67-72chevytrucks.com/vboard/s...d.php?t=142041 __________________ 2009 4x4 Chevy Crew Cab 6.0 1989 4x4 Siverado (270,000 miles) 1972 4x4 Blazer 2007 Chevy Cutaway 1 ton 1970 Corvette (sons project) RIP - CLR 10/11/09

03-15-2007, 08:35 AM	#3
kw Registered User Join Date: Jul 2000 Location: Owings, MD Posts: 119	Re: Rocker/Torsion Box Replacement That's a big help! Thanks!

03-16-2007, 09:19 AM	#4
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,261	Re: Rocker/Torsion Box Replacement Probably the most important point here is to make sure you maintain the deminsional relationships of the firewall--windshield frame to the rear quarters. Two ways to do this--1- is to keep the top on and bolted in place but make sure the door alignment is correct before removing them as the top does have some play front to rear if the torque boxes are crap. Other method is to build some braces between the door pillars---A===B. I prefer the top method as it is more exact. If you weld in stuff without ensuring this alignment, you will never get it right~~~ask me how I know!!

03-16-2007, 03:40 PM	#5
pound41 Registered User Join Date: Dec 2002 Location: Northern Virginia Posts: 1,268	Re: Rocker/Torsion Box Replacement Keep the top on like Huck said. I have one blazer and it's rockerboxes are gone. With the top on the doors and reveals are great. Take the top off and they fade. Also I will soon be at the point of putting one sides rockerbox on. I am not local but I am only in Northern Va. Good Luck

03-17-2007, 08:51 AM	#6
kw Registered User Join Date: Jul 2000 Location: Owings, MD Posts: 119	Re: Rocker/Torsion Box Replacement I'm just down the road from you, in Calvert County. The floorpans are hash, rocker boxes are pretty bad, but the bed and windshield frame look OK. Quarter panels, kick panels, A post, B post etc will need replacement as well. From the amount of cancer on the floorpans, I am thinking about doing the complete floor replacement, but not sure of the differences between the Blazer floor and pickup floor, and whether I have a high hump or low hump vehicle. It's 4X4. Maybe it's best to hop a plane and get another vehicle out west. But then what do I do with what I already have.

03-17-2007, 04:35 PM	#8
kw Registered User Join Date: Jul 2000 Location: Owings, MD Posts: 119	Re: Rocker/Torsion Box Replacement Here's a shot of the hump.. High? Low? Medium? I was out in Arizona last August on a job interview in Gilbert. Saw a bunch of old Chevy trucks. They sure age well out there.

03-17-2007, 09:28 AM	#9
LUV2XCLR8 The LuvShack Garage Join Date: Jan 2004 Location: Maple Grove, TN (West Side) Posts: 30,468	Re: Rocker/Torsion Box Replacement Being a 4x4 it is most likely a High hump, but GM did alot of crazy stuff, IIRC All High humps are bolt in, and All Low humps are made to the floor. __________________ 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

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