Unlocking the Perfect Fit: A Comprehensive Guide to 1990 Ford F-150 Truck Cap Size in Feet

Unlocking the Perfect Fit: A Comprehensive Guide to 1990 Ford F-150 Truck Cap Size in Feet Typestruck.Guidemechanic.com

The 1990 Ford F-150 remains a beloved workhorse and a classic piece of American automotive history. For owners looking to enhance their truck’s utility, security, and aesthetic appeal, a truck cap (also known as a camper shell or topper) is an invaluable addition. However, finding the exact 1990 Ford F150 truck cap size in feet can be surprisingly complex, given the various cab styles and bed lengths Ford offered. It’s not a simple one-size-fits-all scenario.

As an expert in truck accessories and a seasoned content writer, I’ve navigated the intricacies of truck cap sizing for decades. This in-depth guide is designed to cut through the confusion, providing you with all the essential information, measurement techniques, and insider tips you need to confidently select the perfect cap for your vintage F-150. Our ultimate goal here is to equip you with the knowledge to make an informed decision, ensuring a snug fit that protects your cargo and complements your truck’s iconic lines.

Unlocking the Perfect Fit: A Comprehensive Guide to 1990 Ford F-150 Truck Cap Size in Feet

The Foundation: Understanding Your 1990 F-150 Bed Variations

Before you even think about specific dimensions, it’s crucial to understand that the 1990 Ford F-150 wasn’t built with just one standard bed. Ford, like many manufacturers, offered a range of configurations to meet diverse customer needs. These variations directly impact the truck cap size you’ll require.

Firstly, let’s consider the cab styles. The 1990 F-150 primarily came in two main configurations that affect bed compatibility:

• Regular Cab: This is the classic single-row seating option, typically paired with either a short or long bed.
• SuperCab (Extended Cab): Offering additional space behind the front seats, the SuperCab also came with specific bed length pairings.

Each of these cab styles was then matched with different bed lengths, which is the most critical factor for truck cap sizing. The two primary bed lengths available for the 1990 F-150 were:

• Short Bed: Often referred to as a 6.5-foot bed.
• Long Bed: Commonly known as an 8-foot bed.

Based on my experience, many enthusiasts mistakenly assume all F-150s of a certain year share the same bed dimensions. This oversight can lead to frustrating and costly mistakes when purchasing a truck cap. Always remember that the combination of cab style and bed length dictates the precise dimensions needed for a cap.

The Crucial Measurements: What You Absolutely Need to Know

Determining the correct 1990 Ford F150 truck cap size in feet requires meticulous measurement. Relying solely on advertised figures or what a previous owner thought was the size can lead to significant headaches. We always recommend getting down and dirty with a tape measure yourself.

Here are the key dimensions you must accurately record:

1. Bed Length (From Bulkhead to Tailgate)

This is arguably the most critical measurement. You need to measure from the inside of the bulkhead (the front wall of the truck bed, closest to the cab) all the way to the inside edge of the top of the tailgate.

• Pro Tip from us: Use a sturdy steel tape measure for accuracy. Measure along the top edge of the bed rails. Repeat the measurement a couple of times to ensure consistency.

• Why it matters: A cap that’s too long will hang over the tailgate, preventing it from closing properly or even damaging it. A cap that’s too short will leave a gap, compromising weather sealing and security. This measurement defines the primary "length" in your 1990 Ford F150 truck cap size in feet.

2. Bed Width (Inside Rail to Inside Rail)

The width of your truck bed is equally important. You need to measure the inside width of the bed rails, from one side to the other.

• Pro Tip from us: Take this measurement at both the front (near the cab) and the rear (near the tailgate) of the bed. Truck beds can sometimes taper slightly, or previous body work might have introduced subtle variations. The cap needs to sit flush across the entire width.

• Why it matters: If the cap is too wide, it won’t seat properly on the bed rails, leading to gaps and potential leaks. If it’s too narrow, it simply won’t fit at all. This measurement determines the cap’s overall width and how securely it will rest on your truck.

3. Bed Depth/Rail Height (From Bed Floor to Top of Rail)

While not directly part of the cap’s footprint, the bed depth influences the overall aesthetics and compatibility with certain cap styles (like cab-high vs. high-rise). Measure from the bed floor up to the top edge of the bed rail.

• Why it matters: This helps you visualize how high a "cab-high" cap will sit relative to your truck’s cab. It also impacts cargo volume and clearance if you plan to transport taller items.

Common Mistakes to Avoid Are:

• Measuring to the outside of the tailgate: Always measure to the inside edge of the tailgate, where the cap will effectively seal.
• Using a flimsy cloth tape measure: These can stretch and provide inaccurate readings.
• Assuming symmetry: While most beds are symmetrical, always measure both sides and at multiple points to account for any slight manufacturing tolerances or past damage.

Specific Bed Sizes for the 1990 Ford F-150 (Approximate Dimensions)

Now that we understand the importance of measuring, let’s look at the general dimensions you can expect for the various 1990 Ford F-150 bed configurations. Please remember, these are approximate figures, and your personal measurements should always be the final authority.

1. Regular Cab Short Bed (Approx. 6.5-foot bed)

This configuration typically features a bed length around 6 feet 6 inches (6.5 ft). The width across the bed rails (inside measurement) generally hovers around 63-64 inches (approx. 5.25 ft).

• This short bed, combined with the regular cab, was a popular choice for those needing decent cargo space without the added length of an 8-foot bed. When searching for a cap, you’ll specifically look for models designed for a "6.5-foot Ford F-Series bed."

2. Regular Cab Long Bed (Approx. 8-foot bed)

The long bed version of the regular cab F-150 is a true workhorse. Its bed length measures approximately 8 feet (8.0 ft). The width will be consistent with the short bed, around 63-64 inches (approx. 5.25 ft).

• This combination offers maximum cargo capacity. Caps for this bed are generally labeled for an "8-foot Ford F-Series bed." The additional length needs to be carefully accounted for to ensure the cap sits flush.

3. SuperCab Short Bed (Approx. 6.5-foot bed)

The SuperCab, with its extended passenger compartment, was often paired with the short bed. The bed length for this setup is also approximately 6 feet 6 inches (6.5 ft), with a width of about 63-64 inches (approx. 5.25 ft).

• While the bed length is the same as the regular cab short bed, it’s important to verify if a cap specifically mentions compatibility with "SuperCab" models, as sometimes the front bulkhead radius can have slight variations, though this is less common for caps.

4. SuperCab Long Bed (Approx. 8-foot bed)

Less common but still available, the SuperCab with an 8-foot long bed provided immense utility. The bed length here is approximately 8 feet (8.0 ft), with a width of 63-64 inches (approx. 5.25 ft).

• This configuration provides the ultimate in both passenger and cargo space for the 1990 F-150. Finding a cap for this specific setup might require a bit more searching in the used market, but new manufacturers will have options.

Based on my experience in the automotive aftermarket, slight variations in bed dimensions can occur even within the same model year due to manufacturing tolerances or even minor body repairs over the truck’s lifetime. This is precisely why your own precise measurements are indispensable. Never assume – always verify!

Decoding Truck Cap Sizing: Beyond Just Length and Width

While length and width are fundamental, several other factors contribute to a perfect 1990 Ford F150 truck cap size in feet fit and overall satisfaction. These elements often differentiate a good fit from a great one.

1. Bulkhead Radius and Contour

The front of your truck bed (the bulkhead) isn’t a perfect 90-degree angle. It has a slight curve or radius to match the contour of the cab. Truck caps are designed to follow this contour closely for a sealed fit and aesthetic appeal.

• Why it matters: A cap with the wrong bulkhead radius might leave a gap at the front, creating an entry point for water and dust. It can also look out of place, not blending seamlessly with your F-150’s lines.

2. Tailgate Clearance and Compatibility

Modern truck caps often feature a rear door that overlaps the tailgate. It’s crucial that the cap’s design allows your 1990 F-150’s tailgate to open and close freely without interference.

• Pro Tip from us: When test-fitting a used cap, always check the tailgate operation. Ensure there’s no binding or excessive force needed to close it. Some caps might require minor adjustments to the tailgate or cap latches for optimal function.

3. Overall Cap Design and Style

Truck caps come in various styles, each offering different aesthetics and functionalities:

• Cab-High: These caps are designed to sit flush with the top of your truck’s cab, offering a streamlined look. They’re popular for general utility and maintaining the original profile.

• Mid-Rise: Slightly taller than the cab, these provide a bit more cargo volume without being overly bulky.

• High-Rise (Wedge-Style): Offering maximum interior height, these caps are ideal for carrying large items, camping, or creating a more spacious enclosed area. They often slope upwards from the cab to the rear.

• Why it matters: Your choice of cap style will depend on your intended use and personal preference. A high-rise cap, while offering more space, will have a different center of gravity and might impact fuel efficiency slightly.

4. Material: Fiberglass vs. Aluminum

The material of the truck cap also plays a role in its fit and longevity:

• Fiberglass Caps: These are often custom-molded to specific truck beds, providing a very precise, aerodynamic, and often painted-to-match finish. They tend to be heavier and more expensive.

• Aluminum Caps: Typically lighter and more utilitarian, aluminum caps often have a more generic fit. While durable, they may not offer the same level of precise contouring as fiberglass.

• Based on my experience: For a classic truck like the 1990 F-150, a fiberglass cap that matches the paint can significantly enhance its appearance, blending seamlessly with the vehicle’s classic lines. However, an aluminum cap is an excellent, cost-effective choice for pure utility.

Where to Find the Right Cap for Your 1990 F-150

Once you have your precise measurements and an understanding of the cap styles, the hunt for the perfect cap begins.

1. New Truck Caps

Several manufacturers still produce truck caps that can fit older models, or they can custom-build one to your specifications.

• Pros: Perfect fit, new warranty, choice of features (windows, lights, roof racks), custom paint matching.

• Cons: Higher cost, potentially longer wait times for custom orders.

• Pro Tip from us: Visit authorized dealers of major truck cap brands like Leer, A.R.E., or SnugTop. They often have access to historical fitment guides and can advise on the best options for your 1990 F-150.

2. Used Truck Caps

The used market is a treasure trove for older truck accessories. Online marketplaces (Facebook Marketplace, Craigslist), local classifieds, and specialty used truck accessory shops are great places to look.

• Pros: Significantly lower cost, immediate availability.

• Cons: May have wear and tear, limited color choices, no warranty, fitment can be a gamble.

• Pro Tip from us: When buying a used cap, always bring your truck along for a test fit. This is non-negotiable. Check for cracks, damaged seals, functioning latches, and proper alignment on your bed rails. A cap designed for a different manufacturer’s 6.5-foot bed might have subtly different dimensions that prevent a perfect fit on your F-150.

Common Mistakes to Avoid Are:

• Buying sight unseen: This is the quickest way to end up with an ill-fitting cap.
• Not inspecting seals: Worn or cracked weather stripping will lead to leaks.
• Ignoring structural damage: Small cracks can expand and compromise the cap’s integrity.

Installation Considerations for Your Truck Cap

Once you’ve found the ideal cap, proper installation is key to ensuring its security, weather resistance, and longevity.

DIY vs. Professional Installation

While installing a truck cap isn’t overly complicated, it does require two people due to the cap’s weight and bulk.

• DIY: If you’re handy and have a friend, you can typically install a cap using basic tools. The main steps involve placing the cap, clamping it securely to the bed rails, and connecting any electrical components (like brake lights or interior lights).

• Professional: Most truck cap dealers offer installation services. This ensures the cap is properly seated, sealed, and wired, often coming with a guarantee.

• Pro Tip from us: Regardless of who installs it, make sure robust clamping systems are used. These clamps secure the cap to the truck’s bed rails without drilling into the truck itself. Ensure the weather stripping is clean and intact to create a watertight seal.

For a detailed guide on truck cap installation, check out our article on . This resource provides comprehensive instructions and visual aids to help you through the process.

Maintenance and Longevity of Your Truck Cap

A truck cap is an investment, and proper maintenance will extend its life and keep your 1990 F-150 looking great.

• Regular Cleaning: Wash your truck cap regularly, just like your truck. Use automotive soap and water to prevent dirt and grime buildup, which can deteriorate finishes and seals.
• Seal Inspection: Periodically check the weather stripping and seals around the cap, especially at the bed rails and the rear door. Replace any cracked, brittle, or missing seals immediately to prevent water intrusion.
• Latch and Hinge Lubrication: Keep the latches, locks, and hinges lubricated with a silicone spray or light grease to ensure smooth operation and prevent corrosion.
• Window Care: Clean cap windows with a non-abrasive glass cleaner. If your cap has tinted windows, avoid ammonia-based cleaners, which can damage the tint film.

Taking these simple steps will ensure your cap remains a functional and attractive addition to your classic F-150 for many years to come. Learn more about extending the life of your truck accessories in our piece on .

Conclusion: Your 1990 Ford F-150 Deserves the Perfect Cap

Finding the correct 1990 Ford F150 truck cap size in feet doesn’t have to be an overwhelming task. By understanding the bed variations, diligently taking your own measurements, and considering the nuances of cap design, you’re well on your way to a successful purchase. Remember, the key to a perfect fit lies in precise measurements of your truck’s bed length and width, accounting for the bulkhead’s contour, and selecting a cap style that aligns with your needs.

Whether you opt for a custom new cap or a carefully selected used one, the right topper will significantly enhance your F-150’s functionality, protecting your gear from the elements and adding to its timeless appeal. Your classic truck deserves a cap that fits like a glove, providing both utility and aesthetic harmony.

For historical Ford F-150 specifications, you can refer to trusted automotive resources like . Always cross-reference multiple sources for the most accurate historical data.