KEITH BLACK PISTONS P3690433 Engine Block Kb Motor Alcohol 426 Nhra

( Brand: Keith Black Pistons ), ( Manufacturer Part Number: P3690433 ), ( Part Type: Aluminum Engine Block Motor ), ( Items Included: Camshaft, Timing Cover ), ( Vintage Part: Yes )

Review KEITH BLACK PISTONS Aluminum 426 Engine Block Mopar Kb Motor Alcohol Nhra fits HEMI

The Keith Pistons P3690433 426 Hemi Engine Block is a high-performance aftermarket solution for Mopar KB motor enthusiasts seeking superior power and durability. This aluminum engine block, designed specifically for use with alcohol fuel in NHRA competition, undergoes a rigorous manufacturing process to ensure exceptional quality and precision.

The block's construction begins with a state-of-the-art sand casting method, which allows for intricate details and a uniform wall thickness. This results in increased strength and reduced weight, ideal for the demanding requirements of high-performance applications. The block is then subjected to a meticulous machining process, ensuring a perfect bore finish and dimensional accuracy.

The P3690433 426 Hemi Engine Block features a number of advanced design elements. The deck is raised to accommodate oversized pistons and rings, while the sump pan has been reinforced to provide additional oil capacity and support. The block also includes a doweled main cap for increased strength and durability.

This Keith Pistons engine block is designed to work seamlessly with the Mopar KB motor and meets the strict specifications of NHRA competition. Its use of alcohol fuel ensures optimal combustion efficiency, while its robust construction guarantees the reliability and longevity demanded by serious racers.

In summary, the Keith Pistons P3690433 426 Hemi Engine Block is a top-tier aftermarket solution for those seeking maximum power and durability in their Mopar KB motor applications. With its advanced design, meticulous manufacturing process, and NHRA competition compatibility, this engine block is the go-to choice for those who demand the best.

The Keith Black P3690433 426 Hemi engine block for Mopar KB motor with NHRA alcohol certification is a high-performance aftermarket engine block designed for racing applications. Here are some pros and cons of buying this engine block:

1. High-performance design: This engine block is specifically designed for racing applications and is made from premium materials to ensure maximum strength and durability.

2. NHRA certification: The block is NHRA certified for alcohol racing, which means it meets the strict requirements for competition in this type of racing series.

3. Improved cooling: The engine block features improved cooling features, including larger water jackets and better fin design, to help keep the engine running cooler during high-performance racing.

4. Increased strength: The block is designed to handle the increased horsepower and torque produced by high-performance racing engines, making it a good choice for serious racers.

5. Customizable: The engine block can be customized with various options, such as different bore sizes and deck heights, to suit the specific needs of your racing application.

1. Expensive: The Keith Black P3690433 engine block is a high-performance aftermarket part, and as such, it comes with a premium price tag.

2. Not for street use: This engine block is designed specifically for racing applications and is not suitable for use on the street.

3. Requires additional components: To use this engine block, you will need to purchase additional components, such as pistons, rods, and cylinder heads, which can add to the overall cost.

4. Complex installation: Installing this engine block into your racing vehicle can be a complex and time-consuming process, requiring specialized tools and expertise.

The Keith Black P3690433 426 Hemi engine block for Mopar KB motor with NHRA alcohol certification is a high-performance aftermarket part that offers numerous benefits for serious racers. Its improved cooling, increased strength, and NHRA certification make it a top choice for those looking to compete at the highest levels. However, its premium price tag and complex installation requirements make it a less practical option for those with more modest racing goals or limited budgets.

If you are a serious racer looking to compete at the highest levels and have the budget for it, the Keith Black P3690433 engine block is an excellent choice. Its high-performance design, improved cooling features, and NHRA certification make it a top contender for those looking to win races. However, if you have more modest racing goals or a limited budget, there may be other, more affordable options available to you. It's important to carefully consider your racing goals, budget, and installation capabilities before making a decision on this or any other high-performance engine block.

Details:

Pistons Thomas Hildebrand Burns Bell Helmet, Schroeder Borden Spading Moon Equipment, Drag Racing Fuel Hand Pump Pressure Pump, Indy 500 Car Midget Quarter Sprint Offense 3416 Nail head Buick, Buick Low rider Hot Rod Custom Social Cruiser, Dragster Gasser Altered Race Car, 427 Mustang Cobra 392 426 383 454 Ford Chevy Weaned Navarro Meyers, Tatters field Knudsen Hartman Collins Infield, J.E. Location: Thousand Oaks, CA, USA. Listing includes only the items shown in photos. Billet Keith Black Crankshaft and Gear.

Designed for Top Fuel / Funny Car 426 Hemi. Sold AS IS exactly as shown in photos. Keith Black 426 HEMI ALL Aluminum Engine Block Funny Car NITRO NHRA Alcohol.

specifications grokengines:

• for models: Hemi
• for makes: Mopar
• brand: Keith Black Pistons
• mpn: P3690433
• part type: Aluminum Engine Block Motor
• items included: Camshaft, Timing Cover
• vintage part: Yes

shipping grokengines:

offer grokengines:

• best offers: True
• started: November 29, 2025
• options: Ship-to-home
• sold: 0
• quantity: 1
• availability: In Stock

general grokengines:

• Car Truck Parts Accessories > Engines Engine Parts > Engines
• condition: Used

payments grokengines:

• wallet: Paypal
• credit card: Visa
• other

returns grokengines:

• policy: No Returns

seller grokengines:

• city: Thousand Oaks, California
• rating: 96.4%
• # reviews: 241