BMR Suspension SFC008 User Manual
BOXED SUBFRAME CONNECTORS – THIRD GEN. F-BODY
Part # SFC008
NOTE: This part number is designed for exhaust systems that run inside the frame rails and is not compatible with OE or OE
style exhaust systems.
NOTE: Although this installation can be performed with a hydraulic jack and stands, a drive-on 4-post service lift is
recommended.
1. Lift vehicle and support. If you are not using a drive-on lift, the vehicle must be
supported with the suspension loaded. This can be accomplished by driving the front
wheels onto ramps and then placing the rear axle on jack stands.
2. Since this installation involves removal of the front control arm bolts and the car is
being supported by the rear end, it is important to do one side at a time (DO NOT
REMOVE BOTH REAR CONTROL ARM BOLTS WITH THE VEHICLE
SUPPORTED BY THE REAREND). Start by removing the drivers’ side control
arm bolt using an 18mm socket and wrench.
3. Install the drivers’ side sub-frame connector over the control arm mount and insert
the supplied bolt. Note: Some vehicle years had tabs in the mount area that prevent the rear sub-frame connector bracket
from fitting the mount. In these instances use a crescent wrench or pliers to bend the
tab as shown in the image above.
4. Once the rear of the Subframe connector is mounted, lift the front up and mate it to
the frame. Trace the front mounting plate onto the frame of the car using a paint
marker or similar marking tool. Trace the rear brackets as well then remove the subframe connector.
5. Grind the marked areas down to bare metal to prepare for welding. Do the same to
the sub-frame connector then re-install the sub-frame connector. Using a sheet metal
screw to secure the front of the sub-frame connector will simplify the welding
procedure. See image to the right.
6. Weld a full bead around the perimeter of the front and rear Subframe connector plates taking care not to burn the control arm
bushings in the rear.
7. Wire brush and paint the welded areas then tighten the control arm bolts to 100 ft/lbs.
8. Repeat steps 2-7 for the passenger side.
9. Lower vehicle.
BMR Subframe connectors ship with additional reinforcement plates that may be welded in if desired. They are designed to join the
factory pinch welds on the rocker panels to the Subframe Connectors. The reinforcement plates are not necessary for light duty street
applications but are recommended for aggressive road racing, high horsepower drag rac i ng applications or when using the BMR Tra k
Pak or Xtreme Duty torque arms with weld-in cross-member. See image below for installation example.
WWW.BMRFABRICATION.COM
This product is an aftermarket accessory and not designed by the vehicles manufacturer for use on this vehicle. As such, buyer
assumes all risk of any damage caused to the vehicle/person during installa tion or use of this product.
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