FORD Throttle Body Spacer Van 6.8 V10 F8UU-BB

( Manufacturer Part Number: F8UUBB ), ( Type: Throttle Body ), ( Items Included: Throttle Position Sensor, Throttle Valve ), ( Vintage Part: Yes ), ( Country Of Origin: United States ), ( Fuel Type: Gasoline )

Review FORD 6.8 V10 Throttle Body Spacer Super Duty Truck Van fits F250 F350 1998–1999

The **Ford F8UUBB 98 F-250/F-350 6.8L V10 Throttle Body Spacer (Van Version F8UU-BB)** is a meticulously engineered aftermarket component designed to enhance the performance and drivability of Ford s legendary 6.8L Power Stroke V10 engine, specifically tailored for the **F-250 and F-350 Super Duty models** in van configurations. This high-quality spacer is crafted to bridge the gap between the throttle body and intake manifold, creating a more direct and efficient airflow path while reducing backpressure, which in turn allows the engine to breathe better under load. Built from durable, heat-resistant materials, the spacer is precision-machined to ensure a perfect fit, minimizing the risk of leaks or misalignment that could compromise performance. Beyond its mechanical benefits, this component is particularly advantageous for van applications where space is at a premium, as it maintains the stock throttle body position while optimizing airflow an ideal solution for those seeking a subtle yet effective upgrade without the need for extensive modifications. Whether installed as part of a broader tuning package or as a standalone performance enhancement, this throttle body spacer is a reliable choice for enthusiasts looking to unlock additional horsepower and torque while preserving the stock intake system s integrity. Its compatibility with the **F8UUBB** engine code ensures seamless integration, making it a must-have accessory for anyone serious about maximizing the potential of their 6.8L V10-powered Ford Super Duty van.

### **Pros and Cons of Buying a 1998 Ford F-250/F-350 6.8L V10 with an F8UUBB Throttle Body and F8UU-BB Spacer (Van Conversion)**

#### **Pros**

1. **Power and Performance**

The 6.8L V10 engine is one of the most powerful and reliable gas-powered engines Ford ever produced, capable of producing **350 400 horsepower** with stock modifications. The F8UUBB throttle body (a high-flow version) and F8UU-BB spacer (which increases throttle body size and improves airflow) significantly enhance performance by allowing more air into the engine. This setup is ideal for towing, hauling, or modifying for street or off-road use.

2. **Durability and Longevity**

The 6.8L V10 is known for its robustness, especially when properly maintained. With a **cast-iron block, forged internals, and a robust valve train**, it can easily last **300,000 miles** with regular upkeep. Many examples exceed 500,000 miles with minimal issues if the engine is well-built and supported.

3. **Modification Potential**

The 6.8L is a **highly modifiable engine**, making it a favorite among truck enthusiasts. The F8UUBB throttle body and F8UU-BB spacer are popular upgrades for **big-block Ford builds**, allowing for **larger carburetors, fuel injectors, and turbocharging** in the future. This engine can be pushed to **600 horsepower** with proper tuning and supporting mods (heads, camshafts, fuel system upgrades).

4. **Availability of Parts and Support**

Due to its popularity, **parts for the 6.8L V10 are widely available**, including aftermarket support for performance upgrades. There is a **large community of builders** who share knowledge on forums (e.g., Ford Truck Forum, V10.net), making troubleshooting and modifications easier.

5. **Towing and Hauling Capability**

Stock, the F-250/F-350 with a 6.8L V10 can tow **up to 18,000 20,000 lbs** with proper equipment. With the throttle body and spacer upgrades, **power increases**, which can improve towing performance if the drivetrain (transmission, axle, etc.) is reinforced.

6. **Van Conversion Potential**

If this truck is being converted into a **van (e.g., a "V10 van" or "spacer van")**, the 6.8L s power and torque make it ideal for **high-performance conversions**. The extra airflow from the F8UU-BB spacer ensures the engine can handle **forced induction or larger fuel systems** without running rich.

7. **Classic Ford Reliability (When Built Right)**

Many 6.8L engines were **built to last**, especially those with **high-quality internals (e.g., forged crank, rods, pistons)**. If the engine was **rebuilt or upgraded by a reputable shop**, it can be a **lifetime powerplant** with minimal issues.

---

#### **Cons**

1. **High Maintenance Requirements**

- **Valvetrain maintenance** (adjustments every **5,000 10,000 miles** to prevent valve float).

- **Oil changes every 5,000 miles** (or as recommended by the builder) to prevent sludge buildup.

- **Cooling system checks** (the 6.8L runs hot and is prone to **head gasket failure** if overheated).

- **Fuel system upgrades** (stock fuel injectors and carburetors are weak; a **fuel system upgrade** is often necessary for serious power).

2. **Throttle Body and Spacer Limitations**

- The **F8UUBB throttle body** is an improvement over stock but may still **restrict airflow** if the engine is heavily modified (e.g., turbocharged or with a large carburetor).

- The **F8UU-BB spacer** increases throttle body size, but **matching fuel delivery** (injectors, pump, fuel rail) is crucial to avoid **lean conditions or detonation**.

- If the engine is **not properly supported** (e.g., weak fuel system, stock heads), the throttle body and spacer can lead to **poor performance or damage**.

3. **Cost of Modifications**

- Upgrading to an **F8UUBB throttle body and F8UU-BB spacer** is not cheap expect to spend **$500 $1,500 ** depending on quality.

- If the engine is **not already modified**, additional upgrades (heads, camshafts, fuel system, exhaust) may be needed to **fully utilize the throttle body and spacer**.

- **Forced induction (turbo/supercharger)** will require **major supporting mods**, increasing costs significantly.

4. **Potential for Poorly Built Engines**

- Some 6.8L engines were **built with cheaper internals** (e.g., soft valve springs, weak lifters), leading to **valvetrain issues** if not maintained.

- **Stock engines may have weak fuel systems** (small injectors, weak pump), which can **limit performance** even with a bigger throttle body.

- Always **check the engine s history** was it **rebuilt by a reputable shop?** Were **forged internals used?**

5. **Fuel Economy and Running Costs**

- The 6.8L is **not fuel-efficient** expect **8 12 MPG** in a stock truck, and **worse with modifications**.

- **High-performance builds** (especially with forced induction) will **consume fuel quickly**, increasing running costs.

- **Oil changes, fuel system maintenance, and cooling system checks** add up over time.

6. **Weight and Handling**

- The F-250/F-350 is **heavy**, especially with a 6.8L V10. This can affect **handling and fuel economy**.

- If converting to a **van**, the **weight distribution** may need adjustment for **better balance and drivability**.

7. **Resale Value (If Not a Project)**

- A **stock 1998 F-250/F-350 with a 6.8L** is not a high-resale item unless it s **rare or in great condition**.

- If heavily modified (especially with **turbocharging or big power**), resale value drops significantly.

---

### **Ending Conclusion**

The **1998 Ford F-250/F-350 6.8L V10 with an F8UUBB throttle body and F8UU-BB spacer** is an **excellent choice for enthusiasts** who want a **powerful, durable, and highly modifiable** engine. It excels in **towing, hauling, and high-performance builds**, especially when paired with **proper supporting modifications**.

However, it **requires significant maintenance** to avoid common issues (valvetrain wear, fuel system limitations, overheating). The **throttle body and spacer upgrades are great for airflow**, but they **must be paired with the right fuel delivery** to prevent problems. If you plan to **push this engine hard (especially with forced induction)**, expect **higher costs for mods and maintenance**.

- **Truck enthusiasts** who want a **high-performance, long-lasting engine**.

- **Van converters** looking for a **powerful, torquey platform** (e.g., "spacer van" builds).

- **Builders** who enjoy **modifying and tuning** their engines.

- **Everyday drivers** who want **fuel efficiency and low maintenance**.

- **Those unwilling to invest in regular maintenance** (valvetrain adjustments, oil changes, cooling system checks).

- **Budget-conscious buyers** who cannot afford **fuel system upgrades** or **potential engine rebuilds**.

---

### **Final Recommendation**

You **plan to modify it** (fuel system, heads, camshafts, exhaust) to **fully utilize the throttle body and spacer**.

You **have experience with Ford V10s** or are willing to **learn maintenance** (valvetrain, cooling, fuel system).

You **need a powerful, durable engine** for **towing, hauling, or a van conversion**.

The **engine has a clean history** (rebuilt by a reputable shop, forged internals, no major issues).

You **don t want to deal with high maintenance** (valvetrain adjustments, oil changes, cooling system checks).

You **can t afford fuel system upgrades** (injectors, pump, fuel rail) to match the throttle body and spacer.

You **don t plan to modify it** a stock 6.8L is **fine for basic use**, but the throttle body and spacer add **little benefit without supporting mods**.

You **need a fuel-efficient

Details:

98Ford F250 F350 6.8 V10 Throttle Body F8UU-BB. FORD F350SD PICKUP Throttle Valve Assembly; 10-415 6.8L. FORD F250SD PICKUP Throttle Valve Assembly; 10-415 6.8L. Dirt and gunk present.

part #: f8uubb prices

• $49.95-$200.00

specifications throobo:

• for models: F250, F350
• for makes: Ford
• for years: 1998-1999
• mpn: F8uubb
• type: Throttle Body
• items included: Throttle Position Sensor, Throttle Valve
• vintage part: Yes
• country of origin: United States
• fuel type: Gasoline

payments throobo:

• wallet: Paypal
• credit card: Mastercard
• other

shipping throobo:

• service: USPS Ground Advantage, UPS 3 Day Select, UPS 2nd Day Air, UPS Next Day Air
• class: Standard, Expedited, One-day
• transit: 3-7 Days
• carrier: USPS, UPS
• cost: $0.00
• type: Calculated

offer throobo:

• best offers: True
• availability: In Stock
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: April 7, 2026

seller throobo:

• # reviews: 5995
• rating: 99.9%
• city: Monterey, California

general throobo:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies

returns throobo:

• time: 60 Days
• policy: Returns Accepted
• paid by: Seller

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