Tired of stacking alignment shims on a G-body?
SPC 97140 gives the listed GM A/G-body front end caster and camber adjustment. Forged steel, sold as a pair, with ball studs 1/2 inch taller than stock. Match that stud height to your knuckle and suspension before you install.
What is in the box
One pair of forged-steel front upper control arms; one pair is required per axle.
Greaseable, rebuildable ball joints, rubber bushings and grease fittings are included.
The included studs are 1/2 inch taller than stock. Optional OE-length and 1/4-inch-extended studs are separate.
Lower control arms and alternative ball studs are separate parts; this is the upper-arm pair.
Match it to the car
This listing covers the ten manufacturer-listed classic passenger-car applications: Regal, El Camino, Malibu, Monte Carlo, Cutlass, Cutlass Supreme, Bonneville, Grand Am, Grand Prix and LeMans, each with its own years. SPC also lists seven S10-related truck/SUV applications, but its table does not specify drive configuration. Truck/SUV fitment is unconfirmed here; verify the exact 2WD or 4WD configuration with SPC before ordering.
Before the wrench comes out
Front camber/caster adjustment is listed at ±3 degrees. Have a qualified installer check existing wear, OE arm dimensions, cross-shaft mounting and knuckle taper, then complete a vehicle-specific alignment. Adjustment does not choose its own settings.
Support the knuckle and protect the brake lines while removing the original arm. Reuse suitable OE chassis-mounting hardware and follow the shared 97111INS Rev A instructions, which explicitly list this part number.
Keep equal exposed adjuster threads; no more than 1.0 inch may show past the jam nuts on either side. The ball-joint housing and forward clamp leg must meet with no gap, and the clamping surfaces must stay clean and free of grease.
Final-tighten the cross-shaft end nuts at ride height, following the manual’s tightening sequence. Check suspension travel and both steering limits for wheel, spring, shock and chassis contact.
Use NLGI #2, Grade LB grease with 3-5% molybdenum disulfide. SPC calls for 3-6 pumps at each oil change or after wet/dusty use. Road-test, recheck the clamp gap and clearances, and retorque immediately and again after 50-100 miles.
SPC’s current part page lists LTD LIFETIME coverage subject to its warranty policy. That policy requires qualifying original purchase, the original vehicle and professional installation; ball joints and bushings are limited to 3 years/36,000 miles, whichever comes first. Competition, racing, off-road use, abuse, alteration and incorrect installation are excluded, as are finish and normal wear. Keep the original proof of purchase; claims require SPC verification/return authorization, with freight prepaid at the customer’s expense. The remedy is repair or replacement at SPC’s option, without labor or consequential-loss coverage. The shared installation sheet also carries general 90-day defect language, so confirm applicable coverage with SPC before relying on a warranty claim.
Manufacturer specifications and exact applications
Shared 97111INS Rev A instructions - explicitly includes 97140
Send me the year, model and engine if you want a second set of eyes on fitment.
