G-Comp 62-67 Chevy II Torque Arm Floater Rear Axle Suspension Kit

• 100% bolt-in – no cutting of the vehicle to install
• Replaces factory leaf springs with coil-over shocks within a compact design
• Designed ride height is 2″ lower than stock, easily adjustable with coil overs
• Lower shock mount has two positions to accommodate multiple length shocks
• Adjustable Panhard bar to control lateral movement and roll center height
• 1-1/4” x .125” wall DOM trailing arms with rebuildable and greaseable 2” Johnny Joints®
• Fabricated steel 9″ Ford Grand National (floater style) rear end housing
• 56” overall rear end width, hub face to hub face
• Includes sub-frame connectors that bolt directly to factory front subframe mounts
• All hardware included
• Adjustable for near-endless setup variations:
  • Ride height
  • Roll center by moving the Panhard bar in one of three positions on each end for a 1.75” adjustment at desired ride height
  • Instant center using one of three lower arm positions for a 4” total movement
  • Pinion angle with serrated hardware (4 degrees of total adjustment)
  • Sway bar rate – 11 spring rates to choose from with 650 supplied
  • Alignment capability for positive tracking and tire wear
• Designed to complement the G-Comp front end kit and handle the highest level of load for street, road course, autocross, and Sport/Pro touring applications
• Rear crossmember is made from .120″ wall steel tube and is attached to inner frame rails and body
• Front Cross Member is .109” wall and clearance for most transmissions
• Subframe connectors reduces chassis flex and provide a rigid mount for the trailing arms
• Kit works with both stock wheel wells and mini-tubs
• Kit allows room for both OEM fuel tanks or custom fuel cells
• Rear-end housing has sway bar, trailing arm, Panhard bar, and torque arm mounts installed
• Speedway Grand National 5 x 4-3/4 rear hubs with all bearings, seals and hardware included
• Kit includes a 7/8″ x 26” solid torsion bar style sway bar. 622875126 available in eleven rates from 650 to 900
• Sway bar connects to the rear end housing with 7-1/2″ long aluminum arms
• All sway bar links and hardware is included

What else have you come to expect from the Speedway Motors G-Comp product line than a 100% bolt-on, economical, track-tested suspension for your 62-67 Chevy II? G-Comp by Speedway has erased the line between street classics and track-only race cars. The G-Comp torque arm rear suspension system replaces your factory leaf spring suspension with a 2″ lower coilover torque arm style suspension for improved ride and rear axle stability, numerous ride height adjustments, and a heavy-duty suspension to handle all of your spirited driving. This suspension system bolts to factory locations and avoids cutting into your X-Body floor pans. Track tested and engineered for greatness, and precision-built in Lincoln, Nebraska.

As with other compact cars of the era, the first and second-generation Chevy II was factory-equipped with a leaf spring rear suspension. These cars were accompanied by exotic powertrains in the Nova trim, but their economy car underpinnings were more akin to Wells Fargo than to Willow Springs. Leaf springs have many shortcomings, all of which are amplified when used with modern tires and more horsepower. Our clean-sheet torque arm rear suspension design removes all of these shortcomings from the equation. The 54″ torque arm moves the main rear axle pivot point forward – increasing the dynamic load on the rear tires, greatly improving traction and rear axle stability. This makes for a very stout suspension design for high horsepower cars, autocross, road course cars, and dedicated drag race builds.

Our G-comp suspension checks all the boxes, with additional key benefits such as an adjustable panhard bar controlling lateral rear axle movement and a heavy-duty adjustable torsion style sway bar allowing you to dial in the exact rear suspension setup you need. The clean-sheet design allows for endless adjustability – ride height, roll center, instant center, pinion angle, and wheelbase are all adjustable for your suspension tuning needs.

Features

G-Comp rear suspension kits utilize a full floater Ford 9 Inch rear axle setup. Our floating rear axle design, using Grand national style hub and bearing assemblies is technology taken right from the NASCAR playbook – and for good reason. The Grand national hub is centered around a much larger, heavy-duty bearing that can handle the additional abuse that high-horsepower street and track cars deliver. The larger bearing surface also carries the torsional load placed on the wheel when cornering more efficiently than a traditional one-piece cast hub and axle design. In addition to a larger bearing carry the load, our aluminum Grand national hubs reduce rotating mass without sacrificing strength.

Rear-axle housing includes caliper brackets that accept calipers with a 5.25″ mounting spacing, such as the Wilwood Dynalite. Floater rear hubs accept 12.19″ x 0.81″ brake rotors with an 8 x 7.00″ bolt pattern, such as the Speedway Motors Pro-Lite. Combine this caliper and rotor combo with Wilwood BP-10 Brake Pads for a complete rear brake setup. This brake combo is a great value for spirited street driving as well as entry-level autocross and road course competitions.

Add the same brake kit used on the Team Speedway G-Comp equipped race cars.

Shock length and spring rate will depend on how you set the car up (ride height, vehicle weight, ride stiffness, etc.).

Here’s what we recommend as a starting point:

• Shocks – 5/8″ Bolt, 4″ Stroke
  • Pro Touring Fixed Valve Coil-Over Shock
• Springs – 2-5/8″ ID Springs
  • AFCO 2-5/8″ Coil-Over Springs
    • Spring Rates: 375lb for street driving, 500lb for competition