The 1979 Ford Bronco: A Hands-On Buyer's Checklist
Thinking about a 1979 Ford Bronco? This master tech shares the rust spots, frame checks, torque specs, and brake upgrades to inspect one before you buy.
If you're hunting for a 1979 Ford Bronco, you've probably stared at a rust-free fender line and wondered how it survived Minnesota winters. I'm Dave Krueger, a master tech and former dealership service writer, and I've crawled under more classic Broncos than I can count. The 1979 Ford Bronco is the final year of the full-size second-generation body, and it's beautiful, but it hides trouble in places most rookie buyers never look. You can do this. Here's the safe, right way to inspect one before you fork over your savings.
Why the 1979 Ford Bronco Still Draws a Crowd
Between 1978 and 1979, Ford built the first full-size Broncos on the F-100 platform. The 1979 model year is special because it got the last of the big-block 400 V-8 options and a stronger Dana 44 front axle. Collectors pay a premium for these trucks, and that money creates a market full of quick flips. A lot of "restored" Broncos are bondo over rot, so your job starts with a flashlight, a small hammer, and a healthy dose of suspicion.
Rust: What Kills the 1979 Ford Bronco First
Safety First: never trust a running board or rocker panel that feels solid on top. Tap along the underside with a plastic hammer and listen for a dull thud. The floor pans on a 1979 Ford Bronco rust at the rear footwells, and the rear wheel arches are notorious for collecting salt and mud. I've found inner fenders that looked brand new from above and were gone from the back side. If you see dark water stains along the firewall, walk away or price in a full cowl replacement, because it never stops there.
Tool Check: a telescoping inspection mirror, a small hammer, and a flexible magnet on a stick. You'll use them under the doors and along the C-pillars.
Drivetrain and Frame Checks on the 1979 Ford Bronco
Tool Check: a floor jack, four jack stands, and a bright drop light. Safety First: never climb under a Bronco supported by a bumper jack or a compact spare. Chock the rear wheels, set the parking brake, and take the weight off the axles on level concrete.
Get under the front and look at the radius arms where they mount to the frame. The 1979 Ford Bronco shares its platform with the F-100, and those mounts take a beating. Hairline cracks near the welds mean you are looking at a frame repair, not a bushing replacement. Also check the crossmember under the transfer case for elongated holes; that tells you the engine mounts are sagging and the drivetrain has been moving under load.
When you inspect the drivetrain, pull the transfer case dipstick. If the fluid smells burnt or looks metallic, plan on a rebuild. The NP205 transfer case in the 1979 Ford Bronco is nearly indestructible, but even it needs the chain and bearings checked after 40-plus years.
Brakes, Steering, and Suspension Walk-Down
The original front disc brakes on the 1979 Ford Bronco stop a 4,000-pound truck with a single-piston caliper. That's adequate for stock tires, but if the seller is running 35-inch mud tires, the brake system better be upgraded. Check for brake fluid that looks like black coffee, and look at the rubber hoses for cracks where they bend near the calipers.
Steering is where I've seen rescued Broncos snap back on the lift. The steering box on the 1979 Ford Bronco is bolted to the frame with bolts, but those bolts can stretch. Safety First: never turn the wheel hard against the steering stop with the front tires waving in the air. You can strip the sector shaft. Look for powdery rust around the steering box bolts, which usually means the frame itself is thinning in that pocket.
Engine Bay and Fuel System
Open the hood and look at the carburetor. The truck could come with a 351M or a 400 V-8, both with Motorcraft 2-barrel carbs. If the throttle shaft is worn, you'll feel slop in the linkage, and that creates a vacuum leak that no tune-up will fix. Check the fuel lines near the frame rail for rubbing; these trucks are famous for chafing the steel line against the body mount and turning a leak into a fire hazard. Safety First: do not clamp a rubber fuel hose with pliers; use a proper fuel line tool.
Also look at the radiator support and the core support bushings. A sagging core support means the radiator has been wiggling for years and the transmission cooler lines are likely scraped. And check the heater core firewall grommet. If the carpet smells sweet, that's coolant.
Torque Specs Worth Knowing
When you start reassembly, torque matters. I set the lug nuts on this Bronco to 95 ft-lbs with the wheel on the ground, and I torque the radius arm to frame bracket bolts to 120 ft-lbs with the suspension compressed. Torque to spec — and yes, the spec matters. I keep a torque wrench collection in my garage, and you'd be surprised how many buyers skip the torque wrench and end up with a steering wheel that vibrates at highway speed.
When to Call a Pro
If the frame is cracked beyond what you can weld, if the rear wheel wells have rust holes bigger than a dollar bill, or if the wiring looks like a spaghetti dinner, walk away. You can do this. Here's the safe, right way — but part of doing it right is knowing when you're over your head. A pre-purchase inspection by a classic truck specialist runs a couple hundred dollars and can save you thousands. Spend it.
Comments
No comments yet — be the first to share a thought.