The 1957 Buick Super with its nailhead V8 is a solid cruiser when maintained, but these 65+ year-old vehicles suffer from age-related engine wear, Dynaflow transmission issues, and obsolete fuel system problems more than mileage-driven failures.
Nailhead V8 Valve Lifter Collapse and Oil Starvation
Common · medium severitySymptoms: Loud ticking or clattering on startup that may diminish when warm, Loss of power and rough idle, Low oil pressure readings, Sticky or collapsed hydraulic lifters from sitting or old oil
Fix: Requires intake manifold removal and lifter replacement. On the 364ci especially, accessing all lifters means 8-12 hours of labor. Often reveals worn pushrods and rocker arms needing replacement simultaneously.
Estimated cost: $1,200-2,400
Dynaflow Transmission Overheating and Slippage
Common · high severitySymptoms: Delayed engagement when shifting to Drive, Slipping under acceleration especially when hot, Burnt transmission fluid smell, Transmission running hot enough to boil fluid
Fix: The single-speed Dynaflow generates massive heat. Oil cooler lines rot out or cooler itself clogs. Full rebuild with modern friction materials and mandatory cooler upgrade runs 18-24 hours. Many shops won't touch these—specialist required.
Estimated cost: $3,500-5,500
Crankshaft Main Bearing Wear and Knock
Occasional · high severityTypical onset: 80,000-150,000 mi
Symptoms: Deep knocking sound from bottom end that worsens under load, Metal shavings in oil or on magnetic drain plug, Oil pressure dropping significantly at idle, Vibration through entire car at certain RPM ranges
Fix: Nailhead blocks suffer from marginal oiling to rear main bearing. Requires full engine removal, crankshaft R&R, line boring if journals worn, and all new bearings. Machine shop work plus 30-40 hours labor total for removal, rebuild, reinstall.
Estimated cost: $4,500-7,500
Stuck or Leaking Piston Rings and Blowby
Common · medium severityTypical onset: 60,000-120,000 mi
Symptoms: Blue smoke on startup or acceleration, Excessive crankcase pressure blowing out dipstick or valve covers, High oil consumption—quart every 300-500 miles, Fouled spark plugs on one or more cylinders
Fix: Rings stick from infrequent use or carbon buildup. Full ring job requires engine out, heads off, honing cylinders if not scored, new rings on all pistons. If cylinders are scored, needs full bore and oversized pistons. 25-35 hours labor minimum.
Estimated cost: $3,000-5,000
Fuel System Varnish and Carburetor Clogging
Common · medium severitySymptoms: Hard starting especially when cold, Stalling at idle or when coming to stops, Surging or hesitation during acceleration, Flooding with fuel leaking from carburetor base
Fix: Rochester 4-barrel carbs on these gum up badly from ethanol and sitting. Tank typically has rust and sediment. Proper fix is tank removal and cleaning/sealing, new fuel pump, complete carburetor rebuild with kit. Fuel filter often disintegrates. 6-10 hours total.
Estimated cost: $800-1,500
Transmission and Engine Mount Deterioration
Occasional · low severitySymptoms: Clunking when shifting into gear, Excessive engine movement visible when revving, Vibration through floorboards at idle, Driveline shudder on acceleration
Fix: Rubber mounts turn to powder after 60+ years. Transmission mount especially critical as Dynaflow is extremely heavy. Requires transmission support during replacement. 3-5 hours labor for both engine and transmission mounts.
Estimated cost: $400-700
Buy one if you have access to a Dynaflow specialist and budget for deferred maintenance—plan $5,000-8,000 in first year sorting out a neglected example, but they're wonderful cruisers once sorted.
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.