Back in the ’70s, if you saw a Ford Highboy rolling down the road, you knew it meant business. These weren’t just work trucks—they were statement pieces. With their towering stance and unmistakable profile, Highboys commanded respect whether crawling through mud or hauling hay bales.
And at the heart of every Highboy were the Ford Highboy engines, built to handle anything from farm duty to off-road adventures. But not all Ford Highboy engines were created equal.
“I bought my ’72 Highboy with the 360 FE back when they were just used trucks,” recalls Jim Keller, a long-time Highboy owner from Colorado. “That engine pulled my horse trailer up mountain passes for 25 years before I finally rebuilt it.
Even then, it wasn’t because it died—I just wanted more power.”
For truck restorers seeking Ford Highboy original engine specs or researchers exploring the best modern engine swap for Ford Highboy projects, this guide covers everything you need to know about these legendary powerplants.
Original Engine Options for the Ford Highboy
There’s often confusion about which engines were actually factory options in the Ford Highboy. Let’s set the record straight on the engines that came from the Ford factory in these iconic 4×4 trucks between 1967-1977.5:
What’s the best Ford Highboy engine for daily driving?
When considering which original old Ford truck Highboy engine makes the most sense for regular use today, we need to balance power, reliability, and fuel consumption.
Here’s how the actual factory options rank for everyday usability:
The Factory Highboy Engine Lineup: Ranked by Purpose
Most Bulletproof: 300 Inline-6 (1967-1977.5)
This 4.9L straight-six workhorse could probably survive the apocalypse. With approximately 170 horsepower and 283 lb-ft of torque, it wasn’t winning drag races, but it became legendary for reliability.
Many have surpassed 300,000 miles with minimal maintenance, making it the smart choice for those who value dependability over raw power.
Workhorse Option: 240 Inline-6 (1967-1974)
Less commonly ordered but still a factory option, the 240 cubic inch (3.9L) straight-six offered about 150 horsepower and 234 lb-ft of torque.
While less powerful than the 300, it maintained good reliability while offering slightly better fuel economy thanks to its smaller displacement.
Think old trucks are better than new ones? We agree!
Most Powerful Factory V8: 360 FE V8 (1968-1976)
The 5.9L FE engine was the only factory V8 available in a true Highboy for most of its production run. Producing approximately 215 horsepower (196 hp after 1972 emissions changes) and 327-375 lb-ft of torque depending on the model year, it provided the best power-to-weight ratio available from the factory.
Its distinctive FE engine note and impressive low-end torque made it the preferred choice for those who needed V8 power.
Which Ford Highboy engine has the most torque?
For those wondering which original factory Highboy engine delivers the most pulling power, the 360 FE V8 is the undisputed champion with up to 375 lb-ft of torque in early models (pre-1972 emissions standards). After 1972, output dropped to around 327 lb-ft but still led the Highboy engine lineup.
First-Year Option: 352 FE V8 (1967 only)
Only available during the first year of Highboy production, the 352 cubic inch FE V8 was quickly replaced by the 360 FE. While technically a factory option, it’s extremely rare to find an original ’67 Highboy with this engine still installed.
Final Year Options: 351M V8 and 400 V8 (late 1977 only)
For the final months of Highboy production in 1977, Ford replaced the aging FE engine family with the new 351M (Modified) and 400 cubic inch V8s.
These engines used a different architecture than the 351 Windsor/Cleveland engines. The 400 V8 was only available after March 1977 in very late-production Highboys.
The 351M produced around 163 horsepower and 262 lb-ft of torque, while the 400 offered approximately 173 horsepower and 326 lb-ft.
Popular Swap Options (Not Factory Installed):
While the following engines were never factory-installed in Highboys, they are popular swaps that many owners have installed over the years:
351 Cleveland V8 Swap
With its large ports and better breathing capability, the 351C was a performance-oriented 5.8L that delivered up to 250 horsepower and 355 lb-ft of torque.
Though never factory-installed in Highboys, it’s sometimes swapped in for its muscle car DNA and higher RPM potential.
302 Windsor V8 Swap
A popular aftermarket upgrade. This 5.0L engine balanced fuel economy and capability with approximately 205 horsepower and 300 lb-ft of torque—enough for most tasks while being more economical than the factory FE engines.
While never factory-installed in Highboys, it’s a common modern swap.
Note on the 460 Lima V8
While the massive 7.5L big-block 460 engine was available in other F-series trucks, it was never a factory option in the 4×4 Highboy models. This engine was restricted to 2WD F-Series trucks during this era.
Original FE Engine vs. Popular Windsor Engine Swaps
When considering factory-correct FE engines vs. Windsor engine swaps, there are several important distinctions:
- Factory FE Engine (360 only): The original 360 FE big-block design offers tremendous low-end torque and period-correct authenticity for 1967-1976 Highboys. The FE’s distinctive valve covers and air cleaner assembly create the classic Ford engine bay appearance collectors prize. Note that while the 390 FE was available in 2WD F-250s, it was never a factory option in Highboy 4x4s.
- Windsor Engine Swaps (302/351W): These small-block designs, while never factory-installed in Highboys, offer better fuel economy, easier parts availability, and simpler maintenance than the FE series when swapped in. Many owners choose to install these engines during restorations or rebuilds.
- Interchangeability: Both engine families require different motor mounts, and many Highboy trucks have been converted from the original FE to Windsor engines over the years, making proper documentation important for restoration projects.
Modern Engine Options for Ford Highboy Restorations
Today’s Highboy owners have numerous engine upgrade options beyond the factory offerings. For those researching the best modern engine swap for Ford Highboy trucks, here’s how the popular options rank:
How much does a Ford Highboy engine swap cost?
Budget planning is essential for any engine swap project. Costs vary significantly depending on your chosen powerplant and whether you’re doing the work yourself or hiring a shop. Here’s what you can expect to invest:
- Budget Option (Rebuilt Original Engine): $2,500-4,000 for a quality rebuild of your existing engine
- Mid-Range Option (Used Donor Engine): $5,000-7,500 for a used 5.0L from a donor vehicle with installation components
- Premium Option (New Crate Engine): $8,000-12,000 for a new crate engine with supporting modifications
- Ultimate Build (Coyote or EcoBoost Swap): $12,000-15,000+ for complete conversion kits plus professional installation
Labor costs can add an additional $2,000-5,000 depending on your location and the complexity of the swap. Many people save substantially by performing the work themselves with the help of detailed instructions and installation kits.
Best Modern Engine Swaps: Ranked by Performance and Practicality
Best Balance of Power and Simplicity: Ford Performance 302 Crate Engine
These modern 302 crate engines produce 340+ horsepower while maintaining the classic Ford small-block architecture. The beauty is in the relatively straightforward installation—they fit where the original small blocks did but deliver nearly twice the power with modern reliability.
Best Budget Performance Upgrade: 351W-Based Stroker Builds
The 347/408 stroker packages based on 351W blocks offer tremendous bang-for-buck. They maintain factory-like fitment while boosting displacement and torque significantly. With 400+ horsepower potential and minimal modification required, they represent the sweet spot for many Highboy builds.
Ultimate Power Option: Coyote 5.0 Swaps
For those who want modern muscle, nothing beats the 460+ horsepower Coyote engine from today’s Mustangs. While installation requires significant modification to the engine bay, transmission tunnel, and wiring, the result is essentially new-truck performance in a classic Highboy body.
Most Innovative Option: EcoBoost Conversions
For those seeking modern efficiency with impressive torque, turbocharged EcoBoost engines represent Ford’s cutting-edge technology in a vintage platform. While complex to install, the combination of 365+ horsepower, 420 lb-ft of torque, and improved fuel economy makes these conversions increasingly popular.
Performance Enhancement Components
Several manufacturers, including KincerGarage.com, offer performance components designed specifically for Highboy owners:
- Electronic Fuel Injection Kits – Bolt-on EFI systems replace carburetors on original engines for improved starting, drivability, and fuel economy.
- Performance Cylinder Heads – CNC-ported aluminum heads for FE, Windsor, and Cleveland engines provide significant power gains.
- Custom Exhaust Headers – Highboy-specific headers are designed to maximize ground clearance while improving exhaust flow.
- Modernized Cooling Systems – Aluminum radiators and electric fan kits solve the overheating issues common with upgraded engines in Highboy trucks.
Choosing the Right Engine for Your Highboy
When selecting an engine option for a Ford Highboy, consider these factors:
- Intended Use – Daily driver, weekend cruiser, or off-road beast? Each requires different power characteristics.
- Budget Considerations – Original engine rebuilds typically cost less than modern crate engine swaps.
- Originality vs. Performance – Maintaining collector value might require period-correct engines, while restomodding allows for modern power.
- Available Support – Look for suppliers that provide technical support and complete kits, making modern swaps more approachable.
Ford Highboy Restoration Guide: Engine Selection
As part of a comprehensive Ford Highboy restoration guide, engine selection represents one of the most critical decisions. Consider these additional factors when choosing your powerplant:
- Factory Authenticity – For true restorations, only five engines were factory options: the 240 I6, 300 I6, 352 FE (1967 only), 360 FE, 351M (1977 only), and 400 (very late 1977 only). Any other engine, regardless of how common it might be in Highboys today, was installed as an aftermarket swap. The 302 Windsor, 351 Cleveland, 390 FE, and 460 Lima were never factory-installed in Highboys.
- Documentation Verification – Check the truck’s VIN and build sheet to confirm which engine originally came with your Highboy if authenticity is important.
- Transmission Compatibility – Different engines pair with different transmissions. Original configurations included the C6, NP435, and T18 options depending on engine choice.
- Cooling System Requirements – Highboys are known for challenging cooling conditions, especially with larger engines. Upgraded radiators are strongly recommended for any engine swap.
- Exhaust Clearance Issues – The high stance and unique frame configuration of Highboy trucks create specific header and exhaust routing challenges that must be addressed during engine swaps.
Where to Find Highboy Engine Parts and Kits
Several specialty retailers cater to Ford truck enthusiasts. KincerGarage.com offers a selection of engine components and conversion kits specifically designed for Highboy models. Other suppliers worth checking include Summit Racing, Jegs, and dedicated Ford performance shops that specialize in vintage truck restorations.
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Frequently Asked Questions
Will installing a non-factory engine in my Highboy hurt its value?
For investment-grade collector Highboys, maintaining one of the original factory engines (240/300 I6, 352/360 FE, or late 351M/400) typically preserves maximum value. However, for driver-quality trucks, tasteful upgrades often enhance both value and enjoyment.
What’s the most reliable engine option for a daily-driven Highboy?
The factory 300 inline-six earned its reputation for million-mile durability. For modern options, fuel-injected 302 or 351W crate engines offer excellent reliability with improved performance, though they were never factory options in the Highboy.
How difficult is installing a Coyote engine in a Highboy?
While challenging, complete Coyote swap kits are available from suppliers like KincerGarage.com that include motor mounts, transmission adapters, and wiring harnesses to simplify the process for experienced mechanics.
Can the original transmissions handle modern engine power?
Most experts recommend transmission upgrades with higher-output engine packages. Compatible automatic and manual transmission options are available that are engineered to handle increased power.
What fuel economy improvements can I expect with modern engine swaps?
Owners typically report 30-40% improvements in fuel economy when upgrading from original V8s to EFI-equipped crate engines, with even greater gains from EcoBoost conversion systems.
What’s the easiest engine swap for a Ford Highboy?
The 302 Windsor V8 from a 1980s-1990s Ford F-150 or Mustang is generally considered the easiest swap, as it maintains similar dimensions to original engines while offering modern reliability and abundant parts availability.
Many aftermarket suppliers offer bolt-in motor mount kits specifically for this conversion, minimizing fabrication requirements.
How much does a Ford Highboy engine swap cost?
Engine swap costs vary widely depending on the chosen power plant. Budget-friendly rebuilds of original engines typically range from $2,500-4,000.
Mid-range options like a used 5.0L from a donor vehicle with installation components cost $5,000-7,500. Premium installations like new Coyote crate engines with complete conversion kits can exceed $12,000-15,000 before labor.
Where can I find the Ford Highboy original engine specs for my specific truck?
The original door jamb sticker contains engine code information. For definitive identification, the engine block casting numbers can be cross-referenced with Ford technical documentation widely available online from restoration specialists.
How do I know if I have a true Highboy versus a modified F-series?
Authentic Highboys have specific frame characteristics, including a divorced transfer case, distinctive front spring perches, and a 33.5-inch-wide frame (the same width as F-350s of that era).
The VIN number will confirm the truck’s original configuration as a 4×4 model from the 1967-1977 production years. engines while offering modern reliability and abundant parts availability.
Many aftermarket suppliers offer bolt-in motor mount kits specifically for this conversion, minimizing fabrication requirements.
How much does a Ford Highboy engine swap cost?
Engine swap costs vary widely depending on the chosen power plant. Budget-friendly rebuilds of original engines typically range from $2,500-4,000.
Mid-range options like a used 5.0L from a donor vehicle with installation components cost $5,000-7,500. Premium installations like new Coyote crate engines with complete conversion kits can exceed $12,000-15,000 before labor.
Where can I find the Ford Highboy original engine specs for my specific truck?
The original door jamb sticker contains engine code information. For definitive identification, the engine block casting numbers can be cross-referenced with Ford technical documentation widely available online from restoration specialists.
How do I know if I have a true Highboy versus a modified F-series?
Authentic Highboys have specific frame characteristics, including a divorced transfer case and distinctive front spring perches. The VIN number will confirm the truck’s original configuration as a 4×4 model from the 1967-1977 production years. engines while offering modern reliability and abundant parts availability.
Many aftermarket suppliers offer bolt-in motor mount kits specifically for this conversion, minimizing fabrication requirements.
How much does a Ford Highboy engine swap cost?
Engine swap costs vary widely depending on the chosen power plant. Budget-friendly rebuilds of original engines typically range from $2,500-4,000.
Mid-range options like a used 5.0L from a donor vehicle with installation components cost $5,000-7,500. Premium installations like new Coyote crate engines with complete conversion kits can exceed $12,000-15,000 before labor.
Where can I find the Ford Highboy original engine specs for my specific truck?
The original door jamb sticker contains engine code information. For definitive identification, the engine block casting numbers can be cross-referenced with Ford technical documentation widely available online from restoration specialists.
How do I know if I have a true Highboy versus a modified F-series?
Authentic Highboys have specific frame characteristics, including a divorced transfer case and distinctive front spring perches. The VIN number will confirm the truck’s original configuration as a 4×4 model from the 1967-1977 production years.
The Ford Highboy continues to captivate truck fans with its distinctive stance and rugged capability. Whether preserving original factory powerplants or upgrading to modern performance, today’s Highboy owners have more options than ever.
With specialty suppliers like KincerGarage.com offering parts and kits, restoring or upgrading these iconic trucks has become more accessible for those looking to keep these legendary Ford trucks on the road for generations to come.
For more information about Ford Highboy trucks from Getvintagevehicles.com, check out this comprehensive guide: Ford Highboy Truck: The Complete Guide
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