Ironworks Speed and Kustom - Framewright

A Heim joint on the tubular structure allowed adjustment of the differential torque bar connected to the differential at the top of the rear crossmember driveshaft hoop and atop rear differential third member. The torsion bar was used to dial in the rearend differential pinion angle. It also eliminated any rear differential wrap or wheel hop during heavy acceleration and braking.

This rearview displays the 15-gallon fuel tank located behind the Chris Alston Chassis Works Fab9 rearend housing. Notice the tall radius of the rear framerail steps that allow maximum negative rear suspension travel. The wraparound rear framerail section increased the frame torsional rigidity to help eliminate frame twisting or tweaking during heavy acceleration, cornering, and braking.

The ISK framerails were constructed of 2x4-inch rails. The side rail plates were 3/16-inch thick at the top and the bottom rail plates were 1/8-inch thick. Having the front and rear suspension sections stepped allowed for a lower ride height. This frame's ride height is set at 4 inches.

After mounting the wheels and tires, we can see the natural ride height of the frame.

The frame was rolled underneath the Chevy panel.

The ISK frame allowed this Chevy panel to be slammed. Too cool!