Best 347 Stroker Kit: Practical Features for Easier Everyday Use

A strong 347 stroker choice delivers correctly matched bore, stroke, piston, rod, and compression details for builders assembling a compatible small-block Ford engine. In this selection, the two direct 347ci candidates are MAHLE piston sets: one uses a 4.030-inch bore, 3.4-inch stroke, 5.4-inch rod, -16cc dish, and 9.0 compression ratio, while the other uses a 4.032-inch bore, the same stroke and rod dimensions, a -6cc dish, and 10.1 compression ratio. The remaining products are rotating assemblies or stroker kits for Chevrolet, KTM, Harley-Davidson Shovelhead, or other motorcycle applications.

That distinction matters because displacement, balance, deck height, compression, crankcase, and component compatibility must match the intended engine rather than the keyword alone.

For a small-block Ford 347 build, the MAHLE 930249130 is the clearest lower-compression-oriented match, with a 4.030-inch bore, 3.4-inch stroke, 5.4-inch rod, -16cc pistons, and 9.0 compression ratio. The MAHLE 930244732 is the higher-compression alternative, using a 4.032-inch bore, the same stroke and rod dimensions, -6cc pistons, and a listed 10.1 compression ratio. The other eight listings target Chevrolet, KTM, Shovelhead, or Harley applications and should not be treated as direct SBF 347 choices.

347 Stroker Kit Comparison

Image	Product	Buy
Best Pick 1	Mahle 930249130 MS Piston Set (SBF 347ci 4.030in Bore 3.4in Stroke 5.4in Rod .927 Pin -16cc 9.0 CR Set of 8) Best for: SBF 347ci Engine Build Brand: MAHLE | Item model number: ‎930249130	View on Amazon
Best Pick 2	Eagle B13005L03068 Balanced Rotating Assembly Kit: Chevrolet, 350-1 pc rear seal, 168 t Best for: Balanced Rotating Assembly Brand: Eagle | Item Weight: ‎120 pounds	View on Amazon
Best Pick 3	Eagle Chevrolet Small Block 383 Rotating Assembly 4.030in Bore 3.750in Stroke Best for: SBC 383ci Engine Build Brand: Eagle | Item Weight: ‎0.01 ounces	View on Amazon
Best Pick 4	Scat Crankshafts SBC 383 Rotating Assembly Int. Balance Best for: Internal Engine Balance Brand: Scat Crankshafts | Item Weight: ‎82.8 pounds	View on Amazon
Best Pick 5	Eagle B13005E030 Balanced Rotating Assembly Kit: Chevrolet, 350 Best for: Chevrolet 350 Engine Brand: Eagle Specialty Products | Item model number: ‎B13005E030	View on Amazon

How We Compared These Products

We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from MAHLE, Eagle, Scat Crankshafts, Eagle Specialty Products, Hot Rods, and S&S Cycle.

The shortlist includes products such as Mahle 930249130 MS Piston Set (SBF 347ci 4.030in Bore 3.4in Stroke 5.4in Rod .927 Pin, Eagle B13005L03068 Balanced Rotating Assembly Kit: Chevrolet, and Scat Crankshafts SBC 383 Rotating Assembly Int. Balance.

Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.

Detailed Reviews: Best 347 Stroker Kit

1. Mahle 930249130 MS Piston Set (SBF 347ci 4.030in Bore 3.4in Stroke 5.4in Rod .927 Pin -16cc 9.0 CR Set of 8)

Best for: SBF 347ci Engine Builders.

This Mahle 347ci piston set features a 4.030-inch bore and 3.4-inch stroke, designed for a 5.4-inch rod. It offers a 9.0:1 compression ratio with -16cc dish volume, ensuring robust performance for your engine build.

Engineered for optimal performance, this SBF 347ci piston set from Mahle Motorsport includes pistons with a 4.030-inch bore and 3.4-inch stroke, compatible with a 5.4-inch rod. The -16cc dish volume contributes to a 9.0:1 compression ratio, providing a solid foundation for enhanced engine output.

Product Details

Pros

• 347ci displacement
• 4.030 inch bore
• 3.4 inch stroke
• 9.0:1 compression ratio

Cons

• Item package weight is 13.0 pounds

Ideal for builders of SBF 347ci engines seeking a specific compression ratio and bore size for their performance build, provided the 13.0-pound package weight is suitable.

2. Eagle B13005L03068 Balanced Rotating Assembly Kit: Chevrolet, 350-1 pc rear seal, 168 t

Best for: Balanced Rotating Assembly Kit.

This Eagle balanced rotating assembly kit for Chevrolet includes a 3.750-inch cast crank, 5.700-inch I-beam rods with ARP 8740 bolts, and hyper eutectic KB pistons. It features plasma-moly file-fit rings and King SI bearings for a complete engine solution.

The Eagle B13005L03068 rotating assembly kit provides a balanced 3.750-inch cast crank paired with 5.700-inch I-beam rods secured by ARP 8740 bolts. It includes hyper eutectic KB pistons with a -7cc dish, plasma-moly file-fit rings, King SI rod/main bearings, a damper, and a 168-tooth flexplate for Chevrolet applications.

Product Details

Pros

• Balanced rotating assembly
• 3.750 inch cast crank
• 5.700 inch I-beam rods
• Includes damper and flexplate

Cons

• Item weight is 120 pounds

Suitable for Chevrolet engine builders needing a balanced rotating assembly with specific crank, rod, and piston specifications, keeping in mind the substantial 120-pound item weight.

3. Eagle Chevrolet Small Block 383 Rotating Assembly 4.030in Bore 3.750in Stroke

Best for: Small Block Chevy Performance Build.

This Eagle 383 CID rotating assembly for Small Block Chevy features a forged crank and forged pistons with a 3.750-inch stroke and 4.030-inch bore. It includes 6.000-inch H-beam rods, offering a robust foundation for performance engine builds.

Designed for Small Block Chevy engines, this Eagle rotating assembly boasts a 3.750-inch stroke and 4.030-inch bore, utilizing a forged crankshaft and forged pistons. The 6.000-inch H-beam rods provide strength and durability, making it a comprehensive kit for those looking to upgrade their engine's internal components.

Product Details

Pros

• 383 CID displacement
• Forged crank
• Forged pistons
• 6.000 inch H-beam rods

Cons

• Item weight is 0.01 ounces

A strong choice for Small Block Chevy enthusiasts building a 383 CID engine with forged components, though the listed 0.01-ounce item weight appears to be an anomaly and should be verified.

4. Scat Crankshafts SBC 383 Rotating Assembly Int. Balance

Best for: SBC 383 Rotating Assembly.

The Scat Crankshafts SBC 383 rotating assembly is designed for internal balance, providing a cohesive set of components for engine builders. This kit includes forged pistons, offering a solid foundation for performance upgrades.

This Scat Crankshafts SBC 383 rotating assembly focuses on internal balance, ensuring smooth operation and reliable performance. The inclusion of forged pistons signifies a commitment to durability and power handling, making it a suitable choice for those assembling or upgrading their Small Block Chevrolet engine.

Product Details

Pros

• SBC 383 displacement
• Internal balance
• Includes forged pistons
• Durable components

Cons

• Item package weight is 80.0 pounds

Recommended for SBC engine builders prioritizing internal balance and forged piston quality for their 383 cubic inch applications, considering the 80.0-pound package weight.

5. Eagle B13005E030 Balanced Rotating Assembly Kit: Chevrolet, 350

Best for: Chevrolet Small Block Upgrade.

This Eagle Chevrolet Small Block balanced rotating assembly kit features a 5.700-inch rod length and -7cc flat top pistons, achieving a 11.7:1 compression ratio with 58cc heads. It includes a street damper and 168-tooth automatic transmission flexplate.

The Eagle B13005E030 kit provides a balanced rotating assembly for Chevrolet Small Blocks, featuring 5.700-inch I-beam rods and -7cc flat top pistons for a 11.7:1 compression ratio with 58cc heads. It comes with a street damper and a 168-tooth flexplate for automatic transmissions, with options for flywheel or damper changes.

Product Details

Pros

• Balanced rotating assembly
• 5.700 inch rod length
• -7cc flat top pistons
• Includes street damper and flexplate

Cons

• Requires purchase of different flexplate/damper for some applications

A good option for Chevrolet Small Block owners needing a balanced rotating assembly with specific compression and included accessories, but be aware that alternative flexplates or dampers may need to be purchased separately.

6. Hot Rods New Bottom End Kit for KTM 300 XC-W 2008-2014 CBK0011

Best for: KTM 300 XC-W Engine Rebuild.

The Hot Rods CBK0011 bottom end kit offers a fully assembled and factory-trued crankshaft, along with a main bearing and seal kit. This comprehensive package simplifies engine rebuilding for KTM 300 XC-W models from 2008-2014.

This Hot Rods bottom end kit for KTM 300 XC-W (2008-2014) includes a fully assembled and trued crankshaft, a main bearing and seal kit, and a complete top and bottom end gasket and seal kit. It is designed to make engine rebuilding straightforward by providing all necessary components for reassembly.

Product Details

Pros

• Fully assembled crankshaft
• Includes main bearing and seal kit
• Complete gasket and seal kit
• Simplifies engine rebuilding

Cons

• Designed for specific KTM models

Ideal for owners of KTM 300 XC-W models (2008-2014) needing a complete bottom end kit for engine rebuilding, ensuring all necessary components are included for a straightforward process.

7. Hot Rods CBK0047 Bottom End Kit

Best for: Powersports Engine Rebuild Kit.

The Hot Rods CBK0047 bottom end kit provides a fully assembled and factory-trued crankshaft, main bearing and seal kit, and a complete engine gasket and seal kit. This all-in-one solution simplifies the process of rebuilding your engine.

Hot Rods CBK0047 bottom end kit streamlines engine rebuilding by supplying a factory-trued crankshaft, main bearings, seals, and a complete engine gasket set. This kit is designed to facilitate the reassembly of your engine, offering a convenient solution for powersports enthusiasts.

Product Details

Pros

• Factory-trued crankshaft
• Includes main bearing and seal kit
• Complete engine gasket set
• Facilitates engine reassembly

Cons

• Specific model compatibility not detailed

A convenient choice for powersports engine rebuilding, offering a comprehensive kit with a trued crankshaft and all necessary seals and gaskets for a smoother reassembly process, assuming model compatibility.

8. S&S Cycle S&S 9.1:1 Sidewinder 96″ Shovelhead Kit 91-9134

Best for: Harley Shovelhead Big Bore.

The S&S Cycle Sidewinder 9.1:1 Big Bore Stroker Kit is engineered to upgrade stock 74" or 80" H-D. Shovelhead engines to 93" or 96" displacement. It includes 3.625" bore cylinders and forged pistons.

This S&S Cycle Sidewinder kit upgrades Harley-Davidson Shovelhead engines from 74" or 80" to 93" or 96" displacement. It features 3.625" bore high tensile cast iron cylinders, forged pistons with wrist pin and rings, and a dynamically balanced S&S flywheel assembly with heavy-duty connecting rods and mainshafts.

Product Details

Pros

• Big Bore Stroker Kit
• Upgrades to 93" or 96" displacement
• 3.625 inch bore cylinders
• Dynamically balanced flywheel assembly

Cons

• Designed for H-D. Shovelhead engines only

Perfect for owners of stock 74" or 80" H-D. Shovelhead engines looking to significantly increase displacement to 93" or 96", provided their engine is compatible with this specific S&S Cycle kit.

9. Mahle 930244732 Piston Kit (MS Set SBF 347ci 4.032in Bore 3.4in Stroke 5.4in Rod .927 Pin-6cc 10.1 CR Set of 8), 1 Pack

Best for: SBF 347ci Performance Piston Kit.

This Mahle 930244732 piston kit for SBF 347ci engines features a 4.032-inch bore and 3.4-inch stroke, designed for a 5.4-inch rod. It offers a 10.1:1 compression ratio with -6cc volume, manufactured in the United States for optimal performance.

Manufactured in the United States, this Mahle piston kit is designed for SBF 347ci engines with a 4.032-inch bore and 3.4-inch stroke, compatible with a 5.4-inch rod. The -6cc volume contributes to a 10.1:1 compression ratio, aiming for optimal performance and outstanding driving dynamics.

Product Details

Pros

• SBF 347ci engine fitment
• 4.032 inch bore
• 3.4 inch stroke
• 10.1:1 compression ratio

Cons

• Item weight is 12.5 pounds

An excellent choice for SBF 347ci engine builders seeking a higher compression ratio (10.1:1) and specific bore/stroke dimensions, noting the 12.5-pound item weight.

10. S&,S Cycle 124&Prime, Wrinkle Black Hot Set-Up Kit 900-0564

Best for: S&S Cycle 124" Performance Kit.

The S&S Cycle 124" Hot Set-Up Kit in Wrinkle Black offers a significant displacement increase to 124 cubic inches with a 4.125-inch bore and 4.625-inch stroke. It achieves an 11.0:1 compression ratio, designed for street riding.

This S&S Cycle performance kit dramatically increases displacement to 124 cubic inches, featuring a 4.125-inch bore and 4.625-inch stroke for a substantial power increase. With an 11.0:1 compression ratio and a Wrinkle Black powder coat finish, it allows reuse of the stock crankcase, oil pump, and cam cover.

Product Details

Pros

• 124 cubic inch displacement
• 4.125 inch bore
• 4.625 inch stroke
• 11.0:1 compression ratio

Cons

• Requires stock crankcase, oil pump, and cam cover

Ideal for street riders aiming for a massive power increase via a 124 cubic inch displacement upgrade, provided they can utilize their existing stock crankcase, oil pump, and cam cover.

What Buyers Often Overlook

Sizing and compatibility: separate true SBF 347 parts from other stroker kits

The two MAHLE piston sets are the only listings explicitly identified as SBF 347ci components. Both specify a 3.4-inch stroke and 5.4-inch rod, but their bore and piston dish differ: the 930249130 uses a 4.030-inch bore and -16cc pistons, while the 930244732 uses a 4.032-inch bore and -6cc pistons. Confirm that those dimensions match the block’s finished bore, crankshaft stroke, connecting-rod length, wrist-pin specification, and intended deck height.

The Eagle and SCAT products are Chevrolet small-block assemblies, including 383-oriented combinations, so their parts do not establish SBF compatibility. Hot Rods CBK0011 and CBK0047 are powersports bottom-end kits, while S&S Cycle listings are Harley-Davidson-oriented big-bore or hot-setup kits.

A product labeled stroker kit can therefore describe a completely different engine family.

The Key Product Trade-Off

Compression and included components: choose the correct build role

The MAHLE 930249130 provides a set of eight pistons with a listed 9.0 compression ratio and -16cc dish, while the MAHLE 930244732 provides a set of eight with a listed 10.1 compression ratio and -6cc dish. That makes compression the clearest trade-off between these direct 347 candidates, but the final engine result still depends on chamber volume, gasket dimensions, deck height, and related clearances; those details are not supplied here. Neither MAHLE listing is described as a complete rotating assembly.

By contrast, the Eagle B13005L03068 lists a cast crank, I-beam rods, pistons, rings, bearings, damper, and flexplate, and the Eagle B13005E030 lists a balanced assembly with rods, pistons, rings, damper, and flexplate. Those are Chevrolet packages, not substitutes for an SBF piston set.

Best 347 Stroker Kit: Buyer's Guide

Fit, Dimensions, and Compatibility

Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.

Capacity, Output, and Operating Format

Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.

Materials, Construction, and Care

Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.

Included Components and Setup Needs

Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.

Which Should You Choose?

Choose MAHLE 930249130 when your SBF 347 build needs the listed 4.030-inch bore, 3.4-inch stroke, 5.4-inch rod combination and a -16cc piston with a stated 9.0 compression ratio. Choose MAHLE 930244732 when the 4.032-inch bore is correct for the block and the -6cc piston with a stated 10.1 compression ratio suits the planned combination. Select Eagle or SCAT only when building the specified Chevrolet small-block application; their 383 and related rotating assemblies are not SBF 347 kits.

Choose Hot Rods for the listed KTM bottom-end applications, or S&S Cycle for the specified Harley-Davidson configurations. Before ordering, match bore, stroke, rod, pin, balance, compression, and included components to the complete engine plan.

Quick Buying Checklist

• Confirm the complete dimensions against the available space.
• Verify model, accessory, connection, and appliance compatibility.
• Match capacity or output to the expected amount of use.
• Compare materials and care instructions with the maintenance routine.
• Check the included components before planning setup or first use.
• Confirm listed power, water, storage, or installation requirements where applicable.

Frequently Asked Questions

What is a stroker kit?

A stroker kit increases an engine’s displacement by using a crankshaft with a longer stroke. This typically involves a new crankshaft, connecting rods, and pistons designed to work together. The goal is to achieve more cubic inches, leading to increased torque and horsepower potential.

How does a stroker kit affect an engine?

Stroker kits increase an engine’s displacement, resulting in higher torque output, especially at lower RPMs. This can improve acceleration and overall power. However, it also increases internal stresses and may require other engine modifications to optimize performance and reliability.

What are the benefits of a 347 stroker kit?

A 347 stroker kit, commonly used for Ford small blocks, offers a significant displacement increase over stock. This translates to substantial gains in torque and horsepower. It’s a popular upgrade for performance enthusiasts seeking more power from their existing engine block.

Are there different types of stroker kits?

Yes, stroker kits vary by engine application (e.g., Ford SBF, Chevy SB) and component type. Some kits are complete rotating assemblies, while others focus on specific components like pistons or crankshafts. Balance (internal vs.

external) and material choices also differ.

What should I consider when buying a stroker kit?

Consider your target engine application, desired displacement, and intended use. Ensure compatibility with your existing engine block and components. Look at the quality of the included parts, such as the crankshaft, rods, and pistons, and whether balancing is included.

Final Words

Selecting the right 347 stroker kit depends on your specific engine build and performance goals. For Ford small blocks, kits focusing on SBF 347ci displacement offer a clear path to increased power. Evaluate the components included and ensure they align with your project’s needs for optimal results.