64-72 Chevelle Frame Box & Brace Kit
If you've ever seen a bare A body frame you know they're about as weak as you can imagine. Torsional twist is off the charts and front to rear flex is more than you would expect. In high power cornering and drag race launching situations this translates to a sloppy unpredictable feel and most important, lost time. Most folks think harder body bushings and swapping suspension parts takes care of those issues but that's only part of the equation.
Speedtech now has the other part of the equation resolved, introducing the all new A body chassis brace kit! There are several ways this brace kit gets you set up right- laser cut 1/8" thick side plates box the flimsy C channel frame rails for a stiffer complete rail. CNC bent 1 1/2" .156 wall tubing ties the front frame section to the to rear. Support braces tie directly to the rear lower trailing arm mounts to eliminate suspension arm flex. Our heavy duty Transmission crossover is fully adjustable for most any engine/ trans combo and allows the center section to be unbolted for easy transmission servicing. To tie the body to the frame this brace kit bolts to the floor in four positions to further strengthen the entire assembly.
This kit is shipped unassembled so that you can create the perfect fit to your specific car. Welding skills are required for installation. Outside of drilling four small holes, there are no required modifications to the factory floor pan.
For build instructions, click on our .pdf instruction sheet at the bottom of the page. Click on the pics below to see a larger view.
64-67 Chevelles and A bodies
68-72 Chevelle and A bodies (as shown in photos)
**This kit is designed for a typical 2 door A body. Because of differences in floor pans, our kits will not fit 68-72 EL Caminos and Station Wagons.
Choose the appropriate part number for your year vehicle below.