1985 CHEVROLET CAMARO

Typical onset: 90,000-140,000 mi

Symptoms: Slipping between 3rd and 4th gear or no overdrive engagement, Delayed or harsh shifting, Transmission fluid appears burnt or has metallic particles, Loss of reverse or won't move in any gear

Fix: The 700-R4 is notorious for torque converter clutch failure, worn 3-4 clutch packs, and valve body issues. A proper rebuild with updated parts takes 8-12 hours of labor. Many shops won't touch these anymore and recommend replacement with a remanufactured unit.

Estimated cost: $1,800-3,200

Typical onset: 120,000-180,000 mi

Symptoms: Heavy knocking or rod knock at idle, worsens under load, Low oil pressure below 10 psi at hot idle, Excessive blowby or blue smoke from crankcase breather, Metal shavings in oil filter

Fix: Rod and main bearings wear out, especially if oil changes were skipped. Full bottom-end rebuild requires engine removal, machine work, new bearings, and typically piston rings. Budget 20-30 hours labor for a proper in-frame rebuild, or 16-20 hours for a long block swap.

Estimated cost: $2,500-4,800

Symptoms: Hard starting when cold or after sitting, Rough idle, stalling at stop lights, Hesitation or flat spot on acceleration, Fuel smell from engine bay, evidence of leaks at rubber lines

Fix: Rochester Quadrajet carbs varnish badly after sitting, and every rubber fuel line from the 1980s is now cracked. Carburetor rebuild or replacement plus fuel filter, pump check, and replacing all rubber fuel hoses takes 4-6 hours. Don't skip the fuel tank inspection—sediment and rust are common.

Estimated cost: $600-1,200

Typical onset: all mileages due to age

Symptoms: Overheating in traffic or on hot days, Coolant leaks from radiator end tanks or lower hose connections, Heater only blows lukewarm air, Plastic radiator tanks cracked or discolored brown

Fix: Original radiators are 40 years old and the plastic end tanks fail. Water pumps leak, hoses collapse internally, and heater cores clog. Full cooling system refresh (radiator, hoses, water pump, thermostat) takes 5-7 hours. Do it all at once or chase leaks forever.

Estimated cost: $700-1,400

Typical onset: 60,000-100,000 mi

Symptoms: Loud clunk when shifting from park to drive or reverse, Excessive engine movement visible from driver's seat during acceleration, Vibration at idle that changes when put in gear, Tailpipe or transmission pan hitting crossmember on acceleration

Fix: Rubber mounts deteriorate and tear, allowing the drivetrain to shift violently. Replacing motor mounts and transmission mount is straightforward but requires supporting the engine/trans. Budget 3-4 hours labor for all mounts.

Estimated cost: $350-650

Typical onset: 80,000-130,000 mi

Symptoms: Whining or howling from rear axle that changes with speed, Clunking when reversing direction, Gear oil dripping from pinion seal or axle seals, Vibration at highway speeds if U-joints also worn

Fix: The 7.5-inch and 8.5-inch rear ends are robust but seals leak and carrier bearings wear, especially if gear oil wasn't changed. Pinion seal replacement is 2 hours, full bearing/seal overhaul is 6-8 hours if gears are still good.

Estimated cost: $400-1,500

Symptoms: Water pooling in footwells or rear cargo area after rain, Wind noise and whistling at highway speeds, Musty smell, visible mold on carpet or behind panels, Staining on headliner around T-top frames

Fix: T-top seals harden and crack with age, windshield and rear hatch seals also leak. Replacing all weatherstripping is time-intensive (6-8 hours) because of rust, seized fasteners, and panel alignment issues. Don't ignore—water causes floorpan rust.

Estimated cost: $500-900