1967–1972 C10 Longbed to Shortbed Conversion | Classic Truck Performance

Turning a Longbed into a Shortbed: How AMD Sheetmetal Makes It Practical for 1967–1972 Chevy & GMC Trucks

Classic Chevrolet and GMC pickups from 1967–1972 remain some of the most cherished trucks on the road today. Among these vintage pickups, shortbed Fleetside models have long been considered more desirable for their proportions, stance, and overall presence—but they’re also simply harder to find and often command a premium price. In fact, GM built about three times as many longbeds as shortbeds in this era, meaning finding a clean, shortbed truck can be both difficult and expensive.

For builders and enthusiasts looking to combine affordability with style, converting a longbed to a shortbed has become an increasingly popular solution—especially when paired with quality sheetmetal from Auto Metal Direct (AMD).

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Why Convert a Longbed to a Shortbed?

Longbed trucks are often easier to locate and come at more affordable prices, but they don’t always deliver the visual balance or agility that shortbeds do. Traditionally, this left many restorers with a difficult choice:

• Buy a rare shortbed at a premium, or

• Invest extensive time and money restoring an original bed

Thanks to advancements in aftermarket support and modern chassis solutions, swapping a longbed to a shortbed is now a practical, cost-effective path—especially when you combine a frame shortening kit with a new sheetmetal bed from AMD.

The Shortbed Conversion Process

As documented in Classic Truck Performance, the conversion starts with the chassis. A shortening kit (such as those from Classic Performance Products or CPP) is used to reduce the wheelbase of a longbed frame to the correct shortbed length. These kits typically include templates for drilling, cutting, and bolting new C-channel reinforcements to restore structural rigidity after the frame is “bobbled” to its new size.

Once the frame is shortened and reinforced, the next key stage is assembling and installing a new short Fleetside bed—and that’s where AMD’s sheetmetal plays a critical role.

AMD Shortbed Fleetside Sheetmetal: Built for Fit and Ease

AMD’s shortbed Fleetside sheetmetal for 1967–1972 Chevy and GMC trucks is engineered to make this conversion as straightforward as possible:

• Heavy-gauge steel construction with factory-correct reinforcement and cross sills already attached.

• EDP coating applied to resist rust and corrosion before installation.

• Bolt-together assembly, meaning no cutting or welding is required to join bed panels in most cases—helping reduce fabrication time and complexity.

• Factory-style wheelhouses and bed floor provisions with optional 4-inch wider tubs for builders aiming at modern tire fitment and wider “pro touring” looks.

Because GM originally designed the wheelhouses to be interchangeable, AMD’s components fit either side without complication, speeding assembly and helping keep panel gaps straight.

The correct way to assemble the bed is to connect the front panel to the bed floor, then loosely install the bedsides before final alignment. Leaving fasteners slightly loose during this stage allows the builder to make fine adjustments before tightening everything down. Once aligned and squared, fasteners—including original-style carriage bolts for bed-to-frame installation—are snugged for a solid, consistent installation.

Options for Every Build

AMD understands that builders have different goals for their trucks. Some want stock-correct fitment for a traditional restoration; others are planning performance-oriented builds with wider wheels and tires. That’s why AMD offers both stock-dimension beds and configurable wheelhouses with additional width to accommodate oversized rubber without compromising structure or appearance.

Additionally, AMD supports conversions with other related components like tailgates (plain or Chevy/GMC script), latches and hardware, taillight housings, and bumper brackets, so the entire rear assembly can be refreshed with quality reproduction parts.

A Smart Alternative to Restoring Original Sheetmetal

For many longbed trucks, the original bed has spent decades exposed to the elements. Rust, dents, and patched-up panels can make restoring original sheetmetal a time-consuming and costly endeavor. Swapping to a brand-new shortbed often saves money, delivers a stronger structural platform, and offers a visual transformation that many builders prefer.

Transformations like this show that classic truck restorations are evolving—enthusiasts can now take an abundant, affordable longbed and turn it into the shortbed truck they’ve always wanted with modern, high-quality parts designed for ease of installation and long-term longevity.

Final Thoughts

Shortbed C10s continue to be among the most sought after classic pickups, and with good reason. Thanks to AMD’s 1967–1972 Shortbed Fleetside sheetmetal and compatible mechanical conversion kits, longbed trucks can be transformed into compact showpieces without the headaches that often accompany original-part sourcing or extensive metal fabrication.

If you’re considering a longbed to shortbed conversion, AMD’s sheetmetal solutions deliver the fit, finish, and flexibility needed to get the build right the first time.

Recommended AMD Parts List

1967–1972 Chevy & GMC Longbed to Shortbed Conversion

When converting a 1967–1972 Chevrolet or GMC longbed to a shortbed configuration, having the correct sheetmetal and supporting components ensures proper alignment, strength, and factory-style appearance.

Core Shortbed Fleetside Sheetmetal Components

• 1967–1972 Shortbed Fleetside Bed Floor Assembly

• 1967–1972 Shortbed Fleetside Bedsides (LH & RH)

• 1967–1972 Shortbed Front Bed Panel

• 1967–1972 Shortbed Wheelhouses (LH & RH – Stock Width)

• 1967–1972 Shortbed Wide Wheelhouses (Optional – Performance Builds)

• 1967–1972 Shortbed Cross Sills

• 1967–1972 Bed-to-Frame Mounting Hardware Kit

Tailgate & Rear Components

• 1967–1972 Tailgate (Chevrolet Script)

• 1967–1972 Tailgate (GMC Script)

• 1967–1972 Tailgate (Plain)

• Tailgate Latch & Hinge Hardware

• Tailgate Chains / Support Cables

• 1967–1972 Fleetside Taillight Housings

• Fleetside Taillight Lenses & Bezels

• Rear Bumper Brackets

• Step or Standard Rear Bumper

Optional Performance / Resto-Mod Upgrades

• 4-inch Wider Wheel Tubs

• Smooth or Custom Tailgate Options

• LED Taillight Conversions

• Bed Wood or Bed Mat Solutions

• Fuel Filler Neck Components

Frame Conversion Components (Non-Sheetmetal)

While AMD supplies the bed sheetmetal, you will also need:

• Longbed-to-Shortbed Frame Shortening Kit

• Frame Reinforcement C-Channel Inserts

• Measuring Templates / Cut Guides

• Grade 8 Fasteners

Installation Visual Guide

1967–1972 C10 Longbed to Shortbed Conversion

Below is a web-ready “visual walkthrough” section you can pair with images or convert into a downloadable visual guide.

Step 1: Measure & Prepare the Frame

Visual Suggestion:
Wide shot of full longbed chassis on stands with wheelbase measurement marked.

• Confirm original longbed wheelbase

• Mark cut points using frame conversion template

• Double-check measurements before cutting

🔧 Pro Tip: Measure diagonally from fixed reference points to confirm frame is square before making any cuts.

Step 2: Frame Shortening & Reinforcement

Visual Suggestion:
Cut frame section removed + reinforcement channel test fit.

• Cut frame rails at designated points

• Insert C-channel reinforcement sections

• Bolt or weld per kit specifications

• Verify squareness before final tightening

🔧 Pro Tip: Mock up rear suspension before final welding to confirm axle location is correct.

Step 3: Prep New AMD Bed Components

Visual Suggestion:
Shortbed floor on saw horses with EDP coating visible.

• Inspect bed floor assembly

• Test fit cross sills

• Install front bed panel loosely

• Lay out bedside panels

🔧 Pro Tip: Leave all hardware slightly loose until final alignment is complete.

Step 4: Assemble the Bed Structure

Visual Suggestion:
Front panel attached to bed floor, bedsides loosely installed.

Correct order:

1. Attach front panel to bed floor

2. Position wheelhouses

3. Install bedsides

4. Install rear sill / tailgate support

Check:

• Bed width measurement

• Diagonal squareness

• Panel flushness

Step 5: Set Bed Onto Frame

Visual Suggestion:
Forklift lowering assembled bed onto shortened frame.

• Install bed-to-frame mounts

• Use correct carriage bolts

• Align bed to cab gap

• Adjust forward/backward position

🔧 Pro Tip: Aim for consistent ½–¾ inch cab-to-bed gap, depending on factory spec and build style.

Step 6: Final Alignment & Tightening

Visual Suggestion:
Close-up of bedside alignment at cab.

• Check body lines from cab to bedside

• Verify wheel center in wheel opening

• Confirm tailgate alignment

• Tighten all mounting hardware

Step 7: Tailgate & Lighting Install

Visual Suggestion:
Installed script tailgate with finished taillights.

• Install latch hardware

• Mount taillights

• Connect wiring

• Install bumper