DYNACORN 1107L Floor Bed Front Sill Floor/bed 67-72

( Brand: Dynacorn ), ( Manufacturer Part Number: 1107L ), ( Type: Truck Bed Braces ), ( Item Height: 2.900 ), ( Item Length: 71.90 ), ( California Prop 65 Warning: True )

Review DYNACORN Floor/bed Front Sill 67-72 Chevy fits CROSS

The **Dynacorn 1107L Floor/Bed Front Cross Sill** is a meticulously crafted, high-quality replacement part designed specifically for the front cross sill of 1967 through 1972 Chevrolet vehicles, including models like the Chevelle, Impala, Caprice, and Nomad. Engineered to restore structural integrity and enhance durability, this cross sill is fabricated from heavy-duty, cold-rolled steel, ensuring it meets or exceeds the original manufacturing standards of GM s iconic muscle and full-size sedans from that era. The 1107L model is tailored to fit the front cross sill area beneath the floor pan or bed, providing a seamless integration that eliminates rust, weak spots, and potential safety hazards often found in aging frames. Its precise fitment accounts for the unique contours and mounting points of the 67-72 Chevy chassis, including the proper alignment with the frame rails, subframe, and suspension components, ensuring a clean and professional installation. Whether you're restoring a classic muscle car, reinforcing a daily driver, or addressing frame corrosion, this cross sill delivers uncompromising strength and longevity. Built to withstand the rigors of daily use, road salt, and off-road adventures, the Dynacorn 1107L is a reliable upgrade that preserves the original character of your vehicle while significantly improving its structural resilience. Ideal for both DIY enthusiasts and professional mechanics, its straightforward design and robust construction make it a straightforward yet impactful addition to any Chevrolet restoration or reinforcement project.

The **Dyna-Corn 1107L** is a popular aftermarket floor/bed liner designed for 1967 1972 Chevrolet trucks, particularly the C/K series. It s known for its durability, ease of installation, and ability to protect the vehicle s floor and bed. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Dyna-Corn 1107L**

1. **Durability and Protection**

The Dyna-Corn 1107L is made from high-quality **polyethylene plastic**, which is resistant to rust, corrosion, and moisture. This makes it ideal for preventing water, dirt, and road salt from damaging the truck s floor and bed, especially in harsh climates or off-road conditions. Unlike metal floors, it won t rust over time, extending the lifespan of the truck s structural components.

2. **Easy Installation**

The liner is designed to fit snugly into the factory floor and bed cavities of 1967 1972 Chevy trucks. It typically comes with **pre-drilled holes** for the factory floor pans and bed rails, simplifying installation. Many users report that it can be installed in a weekend with basic tools, though some may require cutting or trimming for a perfect fit.

3. **Weight Savings**

Compared to a metal floor, the Dyna-Corn liner is significantly lighter. This can improve fuel efficiency slightly, though the impact is minor in most cases. The weight reduction also eases the overall load on the truck s suspension and drivetrain.

4. **Noise Reduction**

The plastic liner helps dampen road noise and rattles, creating a quieter cabin environment. This is particularly noticeable in older trucks where metal-on-metal contact can be loud.

5. **Prevents Floor Pan Rust**

One of the most common issues in older Chevy trucks is **floor pan rust**, which can compromise structural integrity. The Dyna-Corn liner acts as a barrier, preventing water and debris from accumulating and causing rust. This is especially valuable for trucks used in wet or snowy conditions.

6. **Compatibility with Aftermarket Mods**

The liner is often used as a base for other modifications, such as **bed liners, tonneau covers, or custom floor setups**. It provides a clean, flat surface for mounting accessories without damaging the original floor.

7. **Affordability**

Compared to full floor replacements or custom metal work, the Dyna-Corn 1107L is relatively inexpensive. Prices typically range from **$200 to $400**, depending on the retailer and any additional accessories (e.g., bed rails, sidewalls).

8. **Improved Bed Utility**

The liner can make the bed more functional by preventing sharp objects or tools from damaging the floor. It also makes cleaning easier, as dirt and debris don t accumulate in crevices.

9. **Corrosion Resistance**

Unlike steel floors, the Dyna-Corn liner won t corrode, even if exposed to saltwater or harsh chemicals. This is a major advantage for trucks used in coastal areas or for towing heavy loads.

10. **Retains Factory Fitment**

The liner is designed to match the factory dimensions closely, so it doesn t require extensive modifications to the truck s structure. This makes it a straightforward upgrade for restoration or maintenance projects.

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### **Cons of the Dyna-Corn 1107L**

1. **Not a Complete Rust-Proof Solution**

While the liner prevents water from pooling on the floor, it doesn t eliminate the need for **regular maintenance**. If the truck is driven in extreme conditions (e.g., deep mud, standing water), water can still seep through gaps or around the edges, potentially causing rust if not addressed. Some users report that **sealing the edges** with silicone or rubber gaskets is necessary for optimal protection.

2. **Potential for Poor Fitment**

The 1967 1972 Chevy truck lineup includes several body styles and wheelbase variations (e.g., 4x4 vs. 2x2, different bed lengths). While the Dyna-Corn 1107L is designed for most C/K trucks, some users find that **minor adjustments** (e.g., trimming, bending, or adding filler) are required for a perfect fit. This can add time and effort to the installation process.

3. **Limited Structural Support**

The liner is primarily for **corrosion protection and noise reduction**, not structural reinforcement. In rare cases where a truck s floor is severely compromised, a metal floor replacement or welding may still be necessary. The Dyna-Corn liner is not a substitute for major structural repairs.

4. **Potential for Sharp Edges**

Some users report that the **factory floor pans or bed rails** may have sharp edges that can puncture or damage the liner if not properly prepared. Sanding or filing these edges before installation is recommended to avoid tears or weak points.

5. **Installation Challenges for DIYers**

While the liner is relatively easy to install, inexperienced DIYers may struggle with **cutting, bending, or securing it properly**. Improper installation can lead to gaps, rattles, or premature wear. Some users recommend consulting installation guides or seeking help from a mechanic if unsure.

6. **Not a Sound Deadening Solution**

While the liner reduces some noise, it is not a **sound-deadening material**. For trucks where noise is a major concern, additional soundproofing (e.g., rubber mats, insulation) may still be needed.

7. **Limited Aesthetic Appeal**

The Dyna-Corn liner is functional but not visually appealing. If you re looking for a **custom or high-end appearance**, you may need to pair it with additional bed liners or covers, which can add cost and complexity.

8. **Potential for Moisture Trapping**

If the liner is not installed correctly or if gaps exist, moisture can become trapped underneath, leading to **mold or mildew** over time. Proper sealing and ventilation are important to mitigate this risk.

9. **Not Suitable for Extreme Off-Road Use**

While the liner protects against everyday wear, it is not designed for **heavy-duty off-roading or extreme use cases**. In such scenarios, a **steel floor with additional protection** (e.g., armor plating) may be more appropriate.

10. **Resale Value Impact**

Some truck enthusiasts argue that aftermarket floor liners may **deter buyers** who prefer original or restored components. However, this is subjective, and the liner s rust-prevention benefits often outweigh this concern for most buyers.

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### **Conclusion**

The **Dyna-Corn 1107L** is an excellent choice for owners of 1967 1972 Chevy trucks who prioritize **rust prevention, durability, and ease of installation**. It addresses one of the most common issues in older trucks floor pan corrosion while also improving comfort and functionality. The liner is well-suited for daily drivers, work trucks, and restoration projects where corrosion resistance is critical.

However, it is not a perfect solution. The liner requires **proper installation and maintenance** to maximize its benefits, and it may not fit every truck perfectly without some adjustments. Additionally, while it significantly reduces rust risk, it is not a substitute for addressing other structural or mechanical issues.

For most users, the **pros far outweigh the cons**, making the Dyna-Corn 1107L a **highly recommended upgrade** for Chevy truck owners looking to extend the life of their vehicle and improve its usability.

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### **Recommendation**

- You own a 1967 1972 Chevy truck (C/K series) and want to prevent floor pan rust.

- You re looking for an easy, affordable way to protect your truck s floor and bed.

- You plan to use the truck regularly in wet, snowy, or corrosive environments.

- You want to improve comfort and reduce noise without major modifications.

- You re comfortable with a straightforward DIY installation (or are willing to seek help if needed).

- Your truck has **severe structural rust** that requires welding or metal replacement.

- You re building a **highly customized or show-quality truck** and prefer original or high-end components.

- You plan to use the truck for **extreme off-roading** where additional armor or reinforcement is needed.

- You re on a tight budget and can t afford the liner, in which case **regular maintenance and rust proofing** may be the only option.

The Dyna-Corn 1107L is a **wise investment** for most Chevy truck owners, especially those concerned about rust and longevity. With proper installation and care, it will provide years of protection and improve the truck s overall condition. If you re restoring a classic Chevy or simply want to preserve your current truck, this liner is a **strongly recommended upgrade**.

Details:

Specs Notes For Steel Bed, Fleet side MFG. Headquarters. Strict quality control tolerances and top of the line tooling in tandem with superb craftsmanship ensure that each every Dynacorn branded part is going to fit finish just like original.

part #: 1107l prices

• $60.35-$136.95

specifications otruckbedaccessories:

• for models: Cross
• for makes: Chevy
• brand: Dynacorn
• mpn: 1107l
• type: Truck Bed Braces
• item height: 2.900
• item length: 71.90
• california prop 65 warning: True

shipping otruckbedaccessories:

• class: Standard
• carrier: UPS
• type: Fixed
• cost: $15.99
• transit: 9-15 Days
• service: UPS Ground

seller otruckbedaccessories:

• rating: 99.8%
• city: Camarillo, California
• # reviews: 366675

offer otruckbedaccessories:

• sold: 0
• started: May 25, 2026
• options: Ship-to-home
• availability: In Stock

payments otruckbedaccessories:

• other
• wallet: Paypal
• credit card: Diners-club

returns otruckbedaccessories:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

general otruckbedaccessories:

• Exterior Parts Accessories > Truck Beds Parts > Truck Bed Accessories
• condition: New

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