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Discussion Starter #1 (Edited by Moderator)
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A 355nation (CCP) presented by
crazeecowboy05

Project Name
How-to: Cut a body mount

Project Description
How to modify the body mount so you can safely run bigger, taller, wider tires with out rubbing the factory body mounts.


Skill Level
Med to High

Project Vehicle
Make: Chevrolet
Model: Colorado Z71 Ext Cab
Year: 2005
Engine: 3.5L
Power windows: Yes
Sun Roof: No

Tool/Supplys Needed
-welder
-cut off tool with plenty of discs (preferrably air powered)
-marker
-grinder
-4"x 1/4" flat plate steel (2 pieces approximately 9 to 9 1/4")
-BFH (Big [email protected]*#ing Hammer
-paint
-safety goggles (or glasses)
-welding helment and skin protection


Project Time
30min or less

Project Cost
$20.00

  • Start by taking your marker and drawing a line of where you would like to cut. Make your line end with the factory weld where the mount meets the frame.


  • Start making your cut making sure to have your goggles (or glasses) on. (A sawsall can be used for this cut as well just make sure to have several blades.)



  • Once you have made your cuts both top and bottom, take the grinder to clean and prep the areas to be welded.


  • Next take your piece of flat steel and if not already cut to length, cut it to length. (Chop saw with a metal disc works fast, however cut off tool or sawsall will work, it will just take more time.)

  • Once your steel is cut take it to the truck in order to trace out the curves in the mount. (There are a couple of ridges on the bottom that you will have to cut out to insure proper fit)

  • Make your necessary cuts in your steel making sure to go back over it with the grinder once you are done.

  • Once that is complete, take your plate to the truck and tack weld it into place. (3 to 4 short 1" beads should hold it)

  • Use your BFH to bend the plate to close up any gaps between the plate and mount.

  • Finish welding in the plate to the mount.

    **IMPORTANT ISSUE: THIS FRAME IS CONSTRUCTED FROM HYDRO-FORMED STEEL. YOU CAN NOT RUN A CONTINUOUS BEAD AROUND THE ENTIRE MOUNT. IT HAS TO BE DONE IN STAGES JUST LIKE WELDING SHEET METAL. HYDRO-FORMED STEEL WHEN FORMED DOES NOT RECOGNIZE THAT IT IS NOT FLAT. IF TOO MUCH HEAT IS APPLIED TO AN AREA IT WILL CAUSE THE STEEL TO DISTORT AND TRY TO RETURN TO ITS FLAT STATE. DO NOT WELD A CONSTANT BEAD**

  • Grind the welds down smooth

  • Hit it with a couple coats of rattle can to prevent rust


  • Repeat on opposite side
 

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2009&10 SESM Coordinator
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1,360 Posts
Re: How-to: Cut a body mount

Looks damn good in the pictures but even better in person. Great job cowboy!
 

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microwave
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5,085 Posts
Re: How-to: Cut a body mount

Very nice job and great write up man :thumbup:
 

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Premium Member
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3,522 Posts
Know this is an older thread and a very nice write up at that. But have a question. But do you have to cut as much of as shown here. Would you just have to cut it back far enough to get it inside the fender well
 
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