1986 Chevrolet Suburban K10 4x4, second owner, original 350, clean CA title

Why we picked it

Why we picked it: This 1986 K10 Suburban from a private seller is $11,000. Comparable driver squarebody Suburbans have sold for about $11,000 to $20,000, and 4x4 K10s with the 350 are the ones restomod builders want.

The second-owner seller says it has its original 350, a transmission rebuilt in 2025, power brakes and steering, the 40-gallon tank and a 7-pin trailer plug, on a clean California title. The odometer broke at 107,000 and was repaired, so the seller puts true mileage near 188,000. Budget for a tired engine and suspension at that age.

The value check

The seller is asking $11,000. Comparable cars in the same condition have sold for $11,000–$20,000, so the middle of the market is about $15,500. That put this car 29% under.

Driver-grade 1984-90 half-ton Suburbans sold between $11,000 and $20,000 at BaT, Hagerty, GAA and Mecum in 2026. High mileage keeps this one toward the low end.

Where the numbers come from:

• 1984 Suburban K10, Hagerty $14,500 (Feb 2026)
• 1990 Suburban 1500, BaT $15,777 (Apr 2026)
• 1989 Suburban 1500, BaT $11,000 (Jun 2026)
• 1990 Suburban, GAA $20,000 (Feb 2026)

What to check

• About 188,000 miles per the seller. Do a compression test and check for oil leaks and smoke.
• Look for rust in the rear quarter lower edges, tailgate and rear barn door bottoms, cab corners, rocker panels and the floor under the rear seat.
• Check the front axle for leaking hub seals and worn kingpins or ball joints, and test the manual hubs.
• Ask what transmission was rebuilt (the listing suggests a 700R4) and who did it.
• The listing does not mention rust or A/C condition.

Making it drive like new

Squarebody Suburbans take an LS swap well: a 5.3 or 6.0 with a 4L60E or 4L80E, a modern radiator and an aftermarket A/C system. Add a quick-ratio steering box, front disc brake upgrade with a modern master cylinder, and leaf springs and shocks matched to the weight for a comfortable family hauler.

1 builder makes a complete chassis for the 1973–91 Squarebody Suburban. Compare them side by side, along with what it takes to stiffen the factory frame.