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Editor's Pick 3120-4030 Boss 347 Stroker Small Block Ford 289 - 302 Fx Series -3cc Flat Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 Inch Bore Pin Dia.: 0.912" Comp Height: 1.09" Save Big: 40% Off [EpZTAQ6N]

$59.99 $191.99 -69%

3120-4030 Boss 347 Stroker Small Block Ford 289-302 Piston Set The 3120-4030 Boss 347 Stroker Small Block Ford 289-302 Piston Set is a premium choice for enthusiasts seeking to enhance the performance of their Ford engines. This set is designed for t

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Editor's Pick 3120-4030 Boss 347 Stroker Small Block Ford 289 - 302 Fx Series -3cc Flat Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 Inch Bore Pin Dia.: 0.912" Comp Height: 1.09" Save Big: 40% Off [EpZTAQ6N]

3120-4030 Boss 347 Stroker Small Block Ford 289-302 Piston Set

The 3120-4030 Boss 347 Stroker Small Block Ford 289-302 Piston Set is a premium choice for enthusiasts seeking to enhance the performance of their Ford engines. This set is designed for the FX Series, offering a 3.400" stroke and a 4.030" bore, making it an ideal fit for 289 and 302 engines. The pistons feature a -3cc Flat Top design, providing excellent combustion efficiency and power output. This set is crafted with precision and quality, ensuring a seamless fit and optimal performance.

Key Product Specifications

This piston set is engineered with a Pin Dia. of 0.912" and a Comp Height of 1.09", ensuring a perfect fit for your engine. The pistons are available in both Full-Floating and Press Fit configurations, offering flexibility based on your installation preferences. The Ring Groove dimensions are 1.2/1.2/3MM, providing superior sealing and reducing oil consumption. With a stroke of 3.400" and a rod length of 5.4, this set is designed to deliver an approximate Compression Ratio of 58cc-11.25, 64cc-10.43, or 70cc-9.74, allowing you to fine-tune your engine's performance to your specific needs.

Practical Applications and Benefits

The 3120-4030 Boss 347 Stroker Small Block Ford 289-302 Piston Set is perfect for both street and racing applications. Its robust construction and precise engineering make it a reliable choice for drivers seeking increased power and efficiency. Whether you're looking to improve your daily driver or prepare for a competitive racing event, this piston set offers a range of benefits. Its high-quality components ensure durability and longevity, while the optimized design enhances engine performance and fuel efficiency. This set is a must-have for any Ford enthusiast looking to take their engine to the next level.

What Our Customers Say

January 17, 2026

Absolutely no complaints!

A really well-made and a clever, great little gadget.

- Ceinwen Q..

January 17, 2026

Absolutely no complaints!

This is a very nice and a very, very, very, very solid item.

- Bethan R..

January 17, 2026

Absolutely no complaints!

It's a true beast in terms of performance.

- Octavia U..

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