Sport Truck Homepage
Facebook Click here to find out more!

2003 Chevy Silverado Stock Floor Body Drop - Low Job

How To Body-Drop Your Silverado The New-Skool Way
From the September, 2005 issue of Sport Truck
By Mike Finnegan
Photography by Sadistic Iron Werks
 
2003 Chevy Silverado Stock Floor Body Drop Custom Chevy Silverado
2003 Chevy Silverado Stock Floor Body Drop 2003 Chevy Silverado
1.The guinea pig for this... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop 2003 Chevy Silverado
1.The guinea pig for this article is a standard cab '03 fullsize Chevy Silverado. Sadistic already laid the framerails of this truck on the ground with airbags and a 4-inch step notch. The truck is tucking a set of 22-inch wheels and 265/35R22 tires, which are 29 inches in diameter.
2003 Chevy Silverado Stock Floor Body Drop Tape Measure
2.According to the tape measure,... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Tape Measure
2.According to the tape measure, the rockers needed to move down about 2-1/2 inches to drag on the pavement.
2003 Chevy Silverado Stock Floor Body Drop Floor
3.There was nearly 2 inches... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Floor
3.There was nearly 2 inches of air space between the bottom of the cab floor and the top of the framerails. That meant that we could drop the cab approximately 1-7/8 inches, before the floor would hit the framerails. This wasn't nearly low enough to put the rockers on the ground, so the additional 3/4 inch had to be gained by raising the portions of the floor, just above the framerails where it would hit.
2003 Chevy Silverado Stock Floor Body Drop Cab Mounts
4a.On a Chevy, the cab mounts... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Cab Mounts
4a.On a Chevy, the cab mounts are pretty tall and run from the top of the framerail all the way down to the bottom, which means we couldn't cut the bottom portion of the mounts off the exact amount of the total body drop. The mounts were marked, cut, and welded back onto the framerails in a position that was 2-1/2 inches lower than they were from the factory.
2003 Chevy Silverado Stock Floor Body Drop Cutting Mounts
4b.
2003 Chevy Silverado Stock Floor Body Drop Cab Mounts Cut
4c.
2003 Chevy Silverado Stock Floor Body Drop Welding
4d.
2003 Chevy Silverado Stock Floor Body Drop Cab
5.With the cab mounts repositioned,... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Cab
5.With the cab mounts repositioned, it's time to modify the cab to allow it to be mounted in its new, lower location. After the interior was removed, including the carpet, the floor was cleaned so that the modified areas could be marked off.
2003 Chevy Silverado Stock Floor Body Drop Framerails
6a.The framerails were traced... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Framerails
6a.The framerails were traced with a marker, from beneath the floor and also on the inside to give a guide for cutting. The areas between the front and rear seat frame mounts needed to be raised upward to allow the cab to be dropped downward over the 'rails.
2003 Chevy Silverado Stock Floor Body Drop Framerails Marked
6b.
2003 Chevy Silverado Stock Floor Body Drop Firewall
7a.With the cab suddenly moving... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Firewall
7a.With the cab suddenly moving downward, there wasn't enough room between the firewall and the tires anymore. The outer diameter of the tires was marked on the sides of the firewall, so that appropriate sections of steel could be removed, re-contoured in steel, then welded in place.
2003 Chevy Silverado Stock Floor Body Drop Steel
7b.
2003 Chevy Silverado Stock Floor Body Drop Sheetmetal
8a.The firewall was cut out... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Sheetmetal
8a.The firewall was cut out behind and directly above the tires, then 18-gauge sheetmetal was trimmed to fit the area. A half-moon-shaped side panel was welded into the side of the firewall first, extending inward into the cab. Next, a flat, rectangular steel panel was tack-welded to the top of the arch and bent to its contour, since the heat from the weld made it flexible.
2003 Chevy Silverado Stock Floor Body Drop Side Panel
8b.
2003 Chevy Silverado Stock Floor Body Drop Die Grinder
9.Once the fabricated wheeltubs... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Die Grinder
9.Once the fabricated wheeltubs were completely MIG-welded into place, several inches of additional clearance were added into the engine compartment. A die grinder was called into play to smooth the welds.
2003 Chevy Silverado Stock Floor Body Drop Frame
10.Next, the cab was lifted... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Frame
10.Next, the cab was lifted off the frame, so that the floor could be cut and modified without the worry of chopping fuel lines, brake lines, or wiring.
2003 Chevy Silverado Stock Floor Body Drop Transmission Tunnel
11.The transmission tunnel... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Transmission Tunnel
11.The transmission tunnel had to be raised approximately 2 inches from the firewall to the middle of the cab. A 4-inch Makita grinder fitted with a cut-off wheel made quick work of the sheetmetal, but you could also use a plasma cutter or reciprocating saw as well.
2003 Chevy Silverado Stock Floor Body Drop Sheetmetal Welded
12a.At the front of the transmission... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Sheetmetal Welded
12a.At the front of the transmission tunnel, a flat piece of 2-inch-wide sheetmetal was bent twice and welded in place to reconnect the tunnel to the firewall. The sides of the tunnel received pie-cut strips of sheetmetal as well.
2003 Chevy Silverado Stock Floor Body Drop Weld
12b.
2003 Chevy Silverado Stock Floor Body Drop Sheetmetal Cut Out
13a.Next, the areas of the... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Sheetmetal Cut Out
13a.Next, the areas of the floor directly above the framerails were cut out. Rectangular sections of sheetmetal were again cut and bent to not only cover the slots in the floor, but also add 3/4 inch of additional height to these areas.
2003 Chevy Silverado Stock Floor Body Drop Floor
13b.
2003 Chevy Silverado Stock Floor Body Drop Truck Floor
14.Once the work on the floor... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Truck Floor
14.Once the work on the floor was completed, this was what everything looked like. Up front, you have a pair of wheeltubs that protrude into the cab behind the dashboard, but the floor was only slightly modified and was easily covered up by the factory carpeting.
2003 Chevy Silverado Stock Floor Body Drop Frame
15a.Now that the cab had been... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Frame
15a.Now that the cab had been modified to slip down over the frame, we needed to address the front clip of the truck, which also needed to be moved down 2-1/2 inches. The easiest way to move the entire front clip, including the radiator, downward is to cut the frame horns just behind the radiator. Once the front section of frame was cut loose from the rest of the frame, it was re-positioned and gusseted back together. This effectively completed the body drop of both the cab and the front clip.
2003 Chevy Silverado Stock Floor Body Drop Front Clip
15b.
2003 Chevy Silverado Stock Floor Body Drop Truck Bed
16.Body-dropping the bed is... 
   
  read full caption
2003 Chevy Silverado Stock Floor Body Drop Truck Bed
16.Body-dropping the bed is a simple affair. The guys at Sadistic chose to perform a traditional body drop, which means that they cut the entire bed floor loose from the front bulkhead and side walls, raised it up 6-1/2 inches, then reattached it. While the floor only needed to move 2-1/2 inches to equal the body drop of the cab, the floor was raised an additional 4 inches, so that once it was re-mounted on spacers, no holes would have to be cut in the floor for the 4-inch step notch in the framerails. It's a clean look that really keeps the inside of the bed functional.
Sadistic Iron Werks
760-703-5159

Myspace.com/Sadisticiron

Community Comments

No one has commented on this article yet. Why not be the first to leave a comment?

Add a Comment (Must Be Registered)



*Please enter your username

*Please enter your password

*Please enter your comments
User Name
Not Registered? Signup Here
Password
Comment
   (1024 character limit)

More Related Content

Trade In Value