2
350-300
INSTRUCTIONS
© 2019, Speedway Motors, Inc.
G-Comp Rear Suspension
62-67 Nova
1.
Remove Rear Suspension: Raise the car and support it with jack stands or a lift. Remove the exhaust,
drive shaft, rear end, and all rear suspension components including the rubber bump stops. Disconnect
fuel lines and remove fuel tank. Remove fuel lines, brake lines, and E-brake cables from bottom of car.
These can be re-routed through the holes in the chassis brace after installation.
2.
Prep for Welding: Raise the chassis brace into its approximate position and mark all areas that will be
welded. These areas should be ground down to bare metal to provide the proper conditions for welding.
(Any carpet or padding installed on back side of weld areas should be removed at this time.) To position
the chassis brace, the rear flanges of the chassis brace should be clamped tight against the leaf spring
boxes while the chassis brace is pushed up against the bottom of the car and centered left to right.
(4X) 5/16"-18 X 3/4"
BOLTS
CLAMP TO LEAF
SPRING BOX
CLAMP TO LEAF
SPRING BOX
FIT BETWEEN ROCKERS
FIT BETWEEN FRAME RAILS
FRONT OF CAR
ALIGN WITH OEM
SHOCK BOLT HOLES
SLIP OVER
FACTORY FLOOR SUPPORTS
FRONT SUPPORT TUBES SHOULD FIT TIGHT
AGAINST CROSSMEMBER FOR WELDING
3.
Repeat step two with the rear cross member and front supports. Depending on the car, minor
trimming/fitting may be required. Bolt the upper rear crossmember to the car using the four supplied
5/16”-18 x 3/4” bolts. These bolts will go into the factory shock bolt holes. This will locate the
crossmember in the proper position.
4.
Tack-Weld Crossmembers: Once all areas that will be welded are prepped and cleaned, then the cross
member, chassis brace, and front supports can be tack welded into place. (Some grinding and trimming
may be necessary to provide proper fit up.) Note: Do not fully weld the crossmembers at this time! Only
weld enough to securely hold the parts in place during mock up.
Hint:
Weld in places that can be easily
accessed with a grinder in case it becomes necessary to move or adjust the parts.
