Restoration
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Our subject '67 Verdoro Green Firebird is a numbers-matching 400 car with 83,000 original miles. The car was cosmetically restored in the early '90s and retains its original interior and drivetrain. The car needs a mechanical update, and an improved suspension is critical to building a strong foundation for future upgrades.

Modern Upgrade
This led us on a search for a complete suspension upgrade. John Hotchkis of Hotchkis Performance recently developed the Hotchkis Total Vehicle System (TVS) for the 1st generation F-Body. This was the one stop shopping we'd hoped to find, so we solicited Hotchkis Performance's help in making our Bird fly between two points bounded by curves.


The Hotchkis TVS is a complete suspension package engineered to perform and designed to be strong. The kit for our '67 Firebird includes tuned sway bars, sport coil springs, competition leaf springs with new shackles and U-bolts. A complete hardware package that includes bushings, nut-clips, brackets and end-links is also provided. We also elected to go with the optional Hotchkis Performance shock absorbers. These units are built to Hotchkis' specifications by Bilstein and offer superior dampening. All of these parts are offered as individual components, but the components are engineered to work best as a complete system.

Tire Change
Prior to installing the new suspension, we removed the original 14-inch Rally II wheels and their Redline tires and replaced them with a set of 16x8 American Racing Torq-Thrust wheels mounted with BFGoodrich Comp TA Radial tires. Our Bird was now about to swoop down on Hotchkis Performance's facility in Santa Fe Springs, California to install the new suspension components.


We rolled our clean '67 Verdoro Green Bird up on the rack and we were ready to go. Though the TVS kit had been installed on several other F-bodies (Camaro), our '67 Firebird was to be the shop's first Pontiac F-Body TVS install. Gary Pinkley, the product engineer, intensely involved in the development of these tuned packages, told us that the install would be straightforward. He was confident we could get it all done in one day. His only caution was on the installation and removal of the front coil springs.

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Photo Guide

While the stock front sway bar is easily removed with the front suspension assembled, installation of the new larger bar is best accomplished with the spindle separated from the control arms.

White silicon grease is provided and lubrication of all bushing surfaces is recommended during installation. The suspension components also have grease fittings, so during regular maintenance each bushing can be lubed with quality chassis grease.

The front suspension is complete with the newly installed coils and sway bar. While we were upgrading the suspension, we also rebuilt the upper and lower control arms installing new ball joints and bushings.

The Hotchkis TVS replaces the stock mono-leaf rear springs with competition multi-leaf springs.

Included in the hardware package for the leaf springs are new 1/2-inch U-bolts to replace the factory T-bolts for greater clamping force on the springs to the rear axle. Use of the larger U-bolts requires that the mounting pads be drilled to the new size. This is also required of the lower mounting plate.

Here the new 1/2-inch U-bolts are installed over the axle. Note that the rear brake line must be moved above the U-bolts to avoid being crimped. A large nylon tie can be used to affix the brake line to the axle tube. The lower mounting plate can now be installed and the shock mounted, completing the rear spring installation.

The Hotchkis rear sway bar is fastened to the body with a dog-bone designed end-link. The floor pan is sandwiched between a stud plate (mounted from the inside) and the triangle mounting bracket.

With the traction bar brackets removed, the rear sway bar is mounted to the axle tubes with the provided U-bolts, brackets and bushings.

John Hotchkis puts our Bird to the test. The newly installed Hotchkis TVS suspension package nets a 20-mph increase in the 600-foot slalom.


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