1962 CHEVROLET BISCAYNE

Typical onset: Original units often fail between 80,000-150,000 mi, but many are already rebuilt or swapped

Symptoms: Slipping between gears, especially 1st to 2nd, No movement in Drive or Reverse, Burnt transmission fluid smell, Harsh engagement or flare on upshift

Fix: Complete rebuild required in most cases. Powerglide is simpler and cheaper; Turboglide (rare, 1957-61 carryover in some early '62s) is a nightmare with its variable-pitch stator. Expect 12-16 hours labor for R&R and rebuild. Many shops won't touch Turboglide—swap to Powerglide or TH350 instead.

Estimated cost: $1,800-3,200

Typical onset: Typically surfaces at 100,000+ mi on original engines, but accelerated by poor oil change history

Symptoms: Deep knocking from bottom end, especially when cold, Low oil pressure at idle (under 10 psi), Metallic ticking that worsens under load, Oil consumption increase

Fix: Requires full bottom-end teardown. On I6 and small-block V8s, often more economical to swap in a rebuilt long block or later-model engine. If rebuilding in place, expect 18-24 hours labor plus machine work for crank grinding, align boring, and balancing. Big-block 348/409 rebuilds cost significantly more due to parts scarcity.

Estimated cost: $3,500-7,500

Typical onset: 80,000-120,000 mi on unmolested engines

Symptoms: Blue smoke on startup or deceleration, Excessive oil consumption (1 qt per 500-800 mi), Blow-by visible at oil filler cap, Fouled spark plugs

Fix: Ring and valve job can be attempted if cylinder walls measure within spec (typically .003-.005" taper max). Requires head removal, deck resurfacing, and honing. Budget 14-18 hours labor. If cylinder wear exceeds limits, full rebuild with bore and oversize pistons needed—jumps to 20+ hours and adds $800-1,200 in machine work.

Estimated cost: $2,200-4,800

Typical onset: Not mileage-driven—age and heat deterioration, typically 5-10 years on replacement mounts

Symptoms: Clunk when shifting into Drive or Reverse, Excessive driveline vibration, Transmission tail housing sits low or contacts crossmember, Visible cracks or separation in rubber mount

Fix: Straightforward replacement on jackstands. Requires supporting transmission with jack, removing crossmember bolts, swapping mount. 1.5-2 hours labor. OE-style rubber mounts available through restoration suppliers. Inspect crossmember for rust damage while accessible.

Estimated cost: $120-250

Typical onset: Not mileage-driven—occurs after sitting or with old fuel in tank

Symptoms: Hard starting or no-start after sitting, Stumbling or stalling under load, Weak fuel pump pressure (under 4 psi), Visible debris in inline filter glass bowl

Fix: Start with filter replacement and fuel line inspection. If symptoms persist, tank needs drop and cleaning—heavy varnish requires chemical treatment or boil-out, 4-6 hours labor. Mechanical fuel pump rebuild or replacement adds 1-2 hours. Many carbs (Rochester 2G, Carter, Holley) need full disassembly and ultrasonic cleaning if car sat for years.

Estimated cost: $300-900

Typical onset: 60,000-100,000 mi on original units, depending on driver abuse

Symptoms: Grinding into 2nd or 3rd gear, Difficult shifting when cold, Pops out of gear under load, Gear clash even with clutch fully depressed

Fix: Saginaw 3-speed and Muncie/Borg-Warner 4-speeds are rebuildable but require full R&R. Synchro sets and bearings are still available. Budget 10-14 hours labor for removal, rebuild, and reinstall. 4-speeds cost more due to parts complexity. Clutch replacement should be done simultaneously—add $200-400.

Estimated cost: $1,400-2,600

Typical onset: Typically 90,000+ mi, accelerated by aggressive clutch use on manual trans cars

Symptoms: Excessive crankshaft endplay (over .012"), Grinding noise from front of engine, Clutch won't fully disengage, Visible fore-aft crank movement

Fix: Requires engine teardown to replace thrust bearings and possibly machine crank thrust surfaces. On small-blocks, thrust is typically on #3 or #5 main. If crank isn't scored, bearing replacement alone is 16-20 hours. If machining required, add 3-5 days downtime and $400-700. Big-blocks (348/409) require specialty machining—few shops equipped.

Estimated cost: $2,800-5,500