Old vs. New: Leaf springs
While the old leaf springs may have had a little bit of life left in them (as seen by the arch), the new ones from PST will not only lower the car but should be able to adequately handle the extra grunt of the big-block to come. Also, the rubber pads that ride on top of and below the leaf spring will wear over time so new PST pads come with the rear leaf kit. With the shocks out of the way, Al Jimenez began to disassemble the leaf-spring perches. To loosen the four nuts from the perch, Jimenez used a 5/8-inch socket attached to an impact gun. Once removed, we kept the perch, but tossed out the old U-bolts, nuts, and washers. Multi-leaf kits come with all new hardware including larger diameter U-bolts, nuts, and washers.