Jim Meyer Racing Products
The Pro-Touring subframe features a 59-inch track width, (3 inches narrower than stock) which easily allows 10-inch-wide front wheels. The standard package includes 11-inch GM disc brakes, '67-72 Chevelle disc brake spindles, a 1-inch sway bar, manual rack-and-pinion steering, and QA1 adjustable coilover shocks, however, Baer and Wilwood brakes, as well as 2-inch Jim Meyer drop spindles, and Ridetech ShockWaves are options. Adjustable 1- x .156-inch wall D.O.M. upper control arms, 1 1/4 x .156-inch wall lowers, and an adjustable upper coilover mount make roughly 4 inches of stance adjustment possible without sacrificing geometry.
This jig-built 2x4 box-tube chassis includes Jim Meyer's Pro-Touring front subframe and a urethane-bushed, adjustable four-link style rear suspension with Jim Meyer's Low Roll Center Panhard bar standard, but all choices are up in the air since Jim Meyer builds each chassis to order after discussing options with the customer. Both rear rails and the custom 9-inch rearend housing can be ordered in any width.
The subframe is a bolt-in, although custom adjustments are available that could change that. The chassis, in Jim Meyer's own words, "is not a direct replacement." Floorpan and rear wheelwell mods are required since the body sits down over the chassis and welds to the rails.
Pro-Touring subframes start at $6,800, F-body chassis start at $10,495
RideTech Level 1
The Level 1 system features CoolRide air springs and a relocation kit that moves the shocks to the outside of the factory control arms to make room for the air spring. In the rear, an AirBar system uses a four-link design to replace the leaf springs; this greatly improves rear suspension geometry. Air pressure is controlled by a 3-gallon compressor system with four-way independent control via a RidePro valvebody. Analog gauges and electronic switches are included.
RideTech Level 2
Level 2 steps up to more tuning options with a billet ShockWave front kit with Tubular Strongarm control arms for less defection, a cleaner appearance, and adjustable shock valving (dual adjustable valving is available). The AirBar remains from Level 1, but air regulation is upgraded to the 5-gallon RidePro e2 compressor system with four-way digital control that allows three system air pressure presets to provide accurate adjustments at the touch of a button.
RideTech Level 3
Also known as the Street Challenge Package, Level 3 (components pictured) takes the Level 2 Components and adds in drop spindles, a MUSCLEbar sway bar, pre-plumbed and wired Airpod, and the RidePro e3-Ridetech's most advanced air compressor system.
All systems Level 1 through 3 are bolt-ins, potentially requiring only a few holes for wire and hose routing, and mounting for the compressor system.
$3,900 for Level 1; $5,700 for Level 2; $7,400 for Level 3
Heidts has been known for their street rod suspensions for years, but for muscle cars they started with a blank page and designed a track-oriented suspension. The front subframe includes their forged spindles, power rack, adjustable billet coilover shocks, trans crossmember, 11-inch Wilwood four-piston disc brakes, and custom control arms. Afco dual-adjustable coilovers and/or 12- or 13-inch Wilwood brakes with four- or six-piston calipers are optional.
The four-link conversion kit includes all brackets, four-link bars, Panhard bar, coilover shocks, and all mounting hardware. To take it to the next level of performance, custom 9-inch housings, posi differentials, 31-spline axles, 12-inch Wilwood four-piston brakes, Afco dual adjustable coilovers, subframe connectors, and a driveshaft loop are available.
The Pro-G front is a direct bolt-in, as is the rear four-link rear system
Starting at $4,250 for the Pro-G; $1,095 for the four-link rear