1986 Commercial Trucks For Sale

1986 trucks for sale appeal to buyers who want pre-emissions diesels, simple wiring, and proven mechanical drivetrains. Expect Class 6 to Class 8 configurations, day cabs and sleepers, dump and flatbed bodies, and van or reefer straight trucks. The advantage is serviceability and lower acquisition cost, the trade-offs are older safety tech, more cab wear, and the need to carefully verify structural integrity and drivetrain health.

Start with the structure. Inspect frame rails for scaling, flaking, and prior drill holes, check crossmembers, spring hangers, cab mounts, and fifth wheel plates for cracks or elongation. Aluminum cabs and tanks resist rust, but look for galvanic corrosion at mixed-metal joints and evidence of previous repairs. Floor strength matters on vocational bodies, hardwood or aluminum van floors with 12 inch crossmember spacing carry forklifts better than 16 inch spacing, scuff liners, threshold plates, and rear door frames should be tight and free of rot. On flatbeds check deck thickness, stake pockets, and rub rails, on dumps check floor plating, sidewall bowing, and hoist mount integrity.

Tare weight drives payload and fuel spend. Older steel frames, spring suspensions, and steel wheels are heavier, lightweight specs like aluminum wheels, aluminum cabs, air ride, and smaller fuel tanks can trim hundreds of pounds. Typical 1986 powertrains include Cummins Big Cam variants, Caterpillar 3406B, and Detroit Diesel 6V or 8V two strokes, usually paired with Fuller 9, 10, or 13 speed manuals. Verify cold start quality, oil pressure at hot idle, blow-by at the breather, clutch life, driveline U-joints, and rear axle ratio to ensure the truck will pull your grade at your target cruise RPM without overspeeding. For tractors, wheelbase and fifth wheel position must keep axle weights legal with your trailer, for straight trucks, confirm body length and axle spacing support the intended payload.

Thermal integrity matters if a reefer body is involved, aged polyurethane foam can lose R-value and wet insulation adds weight. Check for delamination, vapor barrier breaches at sidewall seams, and door gasket compression, a modern reefer unit retrofit can stabilize box temperatures and reduce fuel burn. Across all 1986 trucks, evaluate brake foundation hardware, many have manual slack adjusters and S-cam drums, air system dryer's condition, and wiring harness repairs. Corrosion resistance is highly usage dependent, salt exposure accelerates frame and cab rot, look for pitting around fasteners and at the rear frame kick-up. Pre-emissions trucks simplify maintenance, but confirm local rules for low emission zones and port access, then balance structural soundness, floor strength, tare weight, and corrosion history against your route and payload.