The 1967 Buick Wildcat is a full-size B-body cruiser powered by large-displacement nailhead V8s. These engines are generally robust, but the car's age means you're dealing with 55+ year-old seals, bushings, and transmission internals that have often exceeded their service life.
Automatic Transmission Failure (ST-300/ST-400)
Common · high severityTypical onset: 80,000-120,000 mi
Symptoms: Slipping between gears, especially 1st to 2nd, Delayed engagement when shifting into Drive or Reverse, Burnt transmission fluid smell and dark coloration, Whining or grinding noise during acceleration
Fix: Full rebuild required in most cases due to worn clutch packs, hardened seals, and deteriorated bands. Includes torque converter inspection/replacement. 12-16 labor hours for removal, rebuild, and reinstallation.
Estimated cost: $2,200-3,800
Nailhead V8 Oil Consumption and Bearing Wear
Common · medium severityTypical onset: 100,000+ mi
Symptoms: Blue smoke on startup or acceleration, Burning through 1+ quart of oil every 500-800 miles, Low oil pressure at idle (below 10 psi hot), Rod knock or main bearing rumble at startup
Fix: Piston ring replacement addresses oil consumption (20-24 hrs), but bearing wear requires full teardown. Many opt for complete rebuild with oversize bearings, honed cylinders, new rings, and timing set. Engine removal recommended for thoroughness.
Estimated cost: $3,500-6,500
Fuel System Vapor Lock and Carb Issues
Occasional · medium severitySymptoms: Hard starting when engine is hot, especially in summer, Stalling at idle after highway driving, Rough idle and hesitation under acceleration, Fuel smell from underhood due to evaporation
Fix: Combination of carburetor rebuild (4-barrel Rochester or Carter AFB), fuel line rerouting away from exhaust manifolds, and fuel pump replacement. Heat shields often missing. 6-10 hours including carb rebuild and fuel system overhaul.
Estimated cost: $800-1,500
Transmission Oil Cooler Line Leaks and Failures
Common · high severitySymptoms: Transmission fluid puddles under front of car, Rapid transmission fluid loss leading to slipping, Rusted or cracked steel cooler lines at fittings, Sudden transmission overheat and failure if line bursts
Fix: Replace both cooler lines from transmission to radiator-mounted cooler. Often requires custom fabrication or NOS parts as originals are corroded through. 3-5 hours including fluid refill and system test. Preventive replacement strongly advised.
Estimated cost: $400-750
Front Suspension Ball Joint and Idler Arm Wear
Common · high severityTypical onset: 60,000-90,000 mi
Symptoms: Clunking over bumps from front end, Wandering steering and excessive play in wheel, Uneven tire wear on inside edges, Front end shimmy at highway speeds
Fix: Upper and lower ball joints plus idler arm and center link commonly need replacement together on these heavy cars. Alignment required after. 8-10 hours for complete front end rebuild with all wear points addressed.
Estimated cost: $1,200-2,000
Power Steering Pump and Gearbox Leaks
Occasional · low severitySymptoms: Whining noise when turning wheel, especially when cold, Power steering fluid leaks from pump or gearbox seals, Heavy steering effort when fluid runs low, Groaning during full lock turns
Fix: Pump rebuild or replacement plus gearbox seal replacement. Original pumps rebuildable but parts availability varies. 4-6 hours including flush and bleed of system.
Estimated cost: $600-1,100
Buy one if you're prepared for transmission work and oil consumption — parts are available but expect deferred maintenance on any survivor, budget $3-5K for sorting in the first year.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.