1973-1991 GM Squarebody Frame Plates

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2-3 week lead time
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Product Overview

1973-1991 GM Squarebody Frame Plates

These plates require welding and are recommended for the experienced fabricator. For offroad use only. 

Deuling Design 1973-1991 Frame Plate kits offer a serious strength upgrade that provides a great building surface. Front plates cover from the steering box to the front cab mount.  Rear plates cover the section of frame between the rear spring hangers. This creates a smooth space for mounting custom suspension components and increases vertical integrity in these high stress suspension areas of the frame. 

Material: 1/8" A36 Steel

Applications: 1973-1991 K5, K10, K20 & Suburban Front - These may also fit rear Suburban frames, but at this time we need more information.


The Deuling Design multi piece approach makes it easy for the plates to fit your frame and adapt to differences in model years.  Slight trimming or modification may be required.

Please take into consideration welding methods used in offroad fabrication.  Use clamps to hold panels tight to the frame during welding. *Weld all holes in the stock frame to the frame plates from the back side*. Many people choose to stitch weld frame plates to the frame and others choose to fully weld their plates. Welding is at the discretion of the customer and not liable by Deuling Design LLC or its affiliates. 

Also, check out Willomet Motor & Fab's GM Squarebody Frame Plate Installation Video!


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  • 5
    Deuling frame plates

    Posted by Daniel Butler on Sep 28th 2021

    Fit great, no trimming required

  • 5
    Another great idea!

    Posted by Kris Jaggers on Apr 14th 2021

    These frame plates are a great idea. What a perfect way to add rigidity while staying light weight.
    The front section of the factory frame is difficult to box so adding these plates to the outside edge provide the extra strength, and an additional layer. The added layer is basically an over-sized fish plate so now you can add more brackets anytime.
    The window type also provide a great opportunity for welding practice.