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1975 Ford F-250 Highboy Hides 428 Cobra Jet Surprise Under the Hood

1975 Ford F-250 Highboy with Cobra Jet V8 15 photos
Photo: gnw503/eBay
1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine1975 Ford F-250 Highboy with Cobra Jet engine
In 1967, Ford started building a 4x4 F-250 using the narrower frame of the F-350 and an independent transfer case. These trucks were nicknamed "Highboys" by enthusiasts, a name that stuck with the high-riding F-250 to this day. The F-250 Highboy also made the history books for being the basis of Bob Chandler's "Bigfoot," the world's first monster truck.
A capable off-roader thanks to its massive ground clearance, the Highboy wasn't extremely powerful in the 1970s, as the 5.9-liter V8 delivered only 143 horsepower. But someone decided to fix that by dropping a muscle car engine under the hood of a 1975-model-year Highboy.

Finished in a cool two-tone paint combining Ginger Glow Metallic and Wimbledon White, this pickup truck is far from perfect. Since it hasn't been restored, the paint shows signs of wear. Still, it's in pretty good condition for a 46-year-old rig. And there's no rust in sight.

The interior is of the same variety. It doesn't look bad, but it requires some work to restore the upholstery. The carpets need to be replaced too, while the lower areas of the door panels look a bit rough. The cabin boasts a few extras, such as a radio cassette player and extra gauges for the drivetrain.

Speaking of which, this is where things become a lot more interesting. The stock 5.9-liter V8 has been taken out to make room for a 428 Cobra Jet. Yes, that's the 7.0-liter high-performance engine that Ford offered in its muscle cars in 1968 and 1969. The Mustang is the most iconic vehicle fitted with the Cobra Jet, but Ford also dropped it in the Fairlane, Torino, Mercury Cougar, and Mercury Cyclone (among others).

The V8 appears to be stock, which means that it should deliver 335 horsepower and 440 pound-feet (597 Nm) of torque. That's a massive increase over the stock 143 horses. And not only it runs faster now, but it can also tow a lot more than before. Yes, it does have a tow hitch in the back.

While it may need a cleaning and a mild restoration, the truck runs and drives "excellent" according to its owner. The odometer shows 68,431 miles (110,129 km), but there's no word if the gauge reading is accurate or not.

If you're into a Cobra Jet-powered off-roader, this Highboy is auctioned off by seller gnw503 on eBay. With a little more than four hours to go as of this writing, the bidding is $12,100. It should see a significant increase toward the end, but it probably won't break into $20K territory. Not a bad sticker for what could very well be the ancestor to the modern F-150 Raptor.
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About the author: Ciprian Florea
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Ask Ciprian about cars and he'll reveal an obsession with classics and an annoyance with modern design cues. Read his articles and you'll understand why his ideal SUV is the 1969 Chevrolet K5 Blazer.
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