GRABSPEED POWER PARTS CRS-43405400VW8740 Beam Connecting Rod 5.400 TYPE-1 Arp 3/8X1500 Journal

( Brand: Grabspeed Power Parts ), ( Manufacturer Part Number: CRS-43405400VW8740 ), ( Part Type: Rod ), ( Manufacturer Warranty: Yes ), ( Country Of Origin: United States )

Review GRABSPEED POWER PARTS Super 4340 5.400 Inch H beam Connecting Rod Arp 8740 3/8x1500 Journal fits 400

The **Grabspeed Power CRS-43405400VW8740** is a high-performance, precision-engineered connecting rod designed for demanding applications in automotive, marine, and performance engine builds where reliability, strength, and durability are paramount. This rod is specifically crafted for **5.400-inch journal diameter** applications, making it an ideal choice for large-displacement engines, turbocharged setups, or high-revving performance engines where traditional stock rods may fall short. Constructed from **forged 4340 alloy steel**, the rod delivers exceptional tensile strength, fatigue resistance, and resistance to deformation under extreme loads, ensuring long-term structural integrity even under the most aggressive operating conditions. The **Type-1 design** a split-pin configuration provides a balance of strength and ease of assembly, allowing for precise bearing alignment while maintaining robust load-bearing capabilities.

The **ARP 8740** cap bolts, included with this rod, are a critical component that elevates its performance credentials. These bolts are **fully threaded, high-strength, and heat-treated** to meet ARP s stringent specifications, ensuring consistent clamping force and preventing bolt stretch or failure under high RPM or boost pressures. The **3/8-inch diameter** of the bolts, combined with their **1500-inch-pound minimum proof load**, guarantees that the rod cap remains securely fastened, even in the most demanding applications, such as forced induction builds or high-horsepower street or race engines. The **VW8740 designation** indicates a specific thread pattern and bolt hole configuration, ensuring compatibility with aftermarket and OEM components while allowing for custom tuning and modifications.

Beyond its mechanical specifications, the **Grabspeed Power CRS-43405400VW8740** is engineered with attention to detail that enhances both performance and longevity. The rod features **precision-machined surfaces**, including a **smooth, polished journal** and cap interface, which minimizes friction and wear while maximizing efficiency. The **split-pin design** not only simplifies installation but also allows for easy disassembly and inspection, making maintenance and rod replacement straightforward. Whether used in a **big-block Chevrolet, Ford, or Chrysler engine**, or in a **marine diesel application**, this rod is built to withstand the rigors of high-stress environments, from street driving to track racing. For builders seeking a **drop-in replacement** or those customizing an engine for extreme power output, the **Grabspeed Power CRS-43405400VW8740** represents a premium solution combining **industrial-grade materials, meticulous craftsmanship, and proven performance** to deliver uncompromising strength and reliability.

### **Pros and Cons of buying a Grabspeed Power CRS-43405400VW8740 (4340 Steel, 5.400" H-Beam, ARP 8740, 3/8" x 1500 Journal) Connecting Rod**

1. **High-Strength Material (4340 Steel)** 4340 steel is a premium alloy known for its excellent strength-to-weight ratio, toughness, and fatigue resistance. It is commonly used in high-performance and racing applications where durability is critical.

2. **H-Beam Design** The H-beam cross-section provides superior strength and stiffness compared to traditional I-beam rods. This design helps resist bending and torsional forces, improving reliability under high loads, especially in forced-induction or high-RPM applications.

3. **ARP 8740 Bolt Kit** The inclusion of ARP 8740 bolts (or compatibility with them) is a significant upgrade over stock bolts. ARP bolts are known for their high clamp load, precision machining, and resistance to loosening, which enhances rod and crankshaft integrity under extreme stress.

4. **Oversized Journal (3/8" x 1500)** The 3/8" oversized journal allows for a tighter fit in the crankshaft, reducing lateral movement and improving rod stiffness. The 1500 series (or similar) material ensures durability and resistance to wear.

5. **Precision Machining and Balancing** High-quality rods like these are typically precision-balanced and machined to tight tolerances, reducing vibration and improving engine smoothness.

6. **Compatibility with Performance Engines** This rod is designed for high-performance applications, including turbocharged, supercharged, or naturally aspirated engines pushing beyond stock limits. It is suitable for engines with higher displacement, forced induction, or aggressive tuning.

7. **Warranty and Reputation** Grabspeed is a well-regarded manufacturer in the aftermarket, offering warranties and a reputation for quality. Their rods are often used in professional racing and high-performance builds.

8. **Customization Options** Depending on the application, these rods can be paired with other high-performance components (e.g., ARP main caps, upgraded bearings) for further reliability gains.

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1. **Cost** High-performance rods like this are significantly more expensive than stock or budget aftermarket rods. The price reflects the premium material, machining, and engineering, but it may not be justified for mild street applications.

2. **Installation Complexity** Replacing rods requires disassembly of the engine, proper alignment, and often the use of specialized tools (e.g., ARP bolts require specific installation procedures). This may require professional installation, adding to costs.

3. **Overkill for Mild Applications** If the engine is not heavily modified (e.g., stock or lightly tuned), these rods may offer little benefit over stock or moderately upgraded rods. The cost may not be justified for low-stress applications.

4. **Weight** While 4340 steel is strong, it is heavier than some alternative materials (e.g., titanium or aluminum). For applications where weight reduction is critical (e.g., high-RPM racing), this could be a drawback.

5. **Compatibility Issues** Ensure the rod fits the crankshaft, engine block, and other components precisely. Mismatched rod lengths or journal sizes can cause clearance issues or binding. Verify measurements and clearances before purchase.

6. **Maintenance Requirements** High-performance rods may require more frequent inspection (e.g., checking for cracks, wear, or bolt torque) compared to stock rods, especially in aggressive applications.

7. **Limited Availability of Parts** If the engine is modified heavily, finding replacement parts (e.g., bearings, seals) for this rod may be more challenging than for stock components.

8. **Potential for Over-Tuning** If the rest of the engine (e.g., crankshaft, bearings, fueling) is not upgraded proportionally, the rods may be stressed beyond their intended limits, reducing their lifespan.

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The **Grabspeed Power CRS-43405400VW8740 rod** is an excellent choice for **high-performance, forced-induction, or heavily modified engines** where reliability and strength are paramount. Its 4340 steel construction, H-beam design, ARP bolt compatibility, and oversized journal make it a top-tier option for builders pushing engines to their limits. However, it is **not necessary** for mild street applications or stock engines, where the cost may not be justified.

- You are building a **high-performance, turbocharged, or supercharged engine** with significant power goals (e.g., 600 hp or aggressive forced induction).

- Your engine requires **maximum durability** (e.g., drag racing, circle track, or endurance racing).

- You are pairing it with a **high-quality crankshaft, bearings, and fueling system** to match its strength.

- You have the **budget** for premium aftermarket components.

- Your engine is **stock or lightly modified** (milder rods or stock rods may suffice).

- You are on a **tight budget** and cannot justify the cost for your application.

- You lack the **experience or tools** for proper installation (consider professional installation).

- The rest of the engine (e.g., crankshaft, bearings) is **not upgraded proportionally** to handle the rod s capabilities.

For most **mild street tuners**, a **moderately upgraded rod** (e.g., forged steel with stock bolts) may be a more cost-effective choice. However, for **serious performance builds**, this rod is a **strong, reliable, and high-performance option** worth the investment. Always verify compatibility with your specific engine and consult with a performance specialist if unsure.

Details:

5.400 H-Beam Connecting Rod. To the rod to eliminate cap shifting and stress relieved. V W 4340 Chorally. Our H-Beam Rods are the perfect match to our striker cranks.

Radius ed rod caps help reduce that amount of clearance required on striker applications and are sleeved. Silicone bronze wrist pin bushings are made to withstand high impact forces. Parts Number: CR43405400VW. Brand New Super.

W/ARP 8740 3/8 x1.500 L. Brand: Grabspeed Power Parts. Our H-Beam Rods are a mystify you planning on building an all-out performance engine. Cap Screw Rod Bolts.

Race proven H-Beam design combines weight savings and high strength thanks. Thanks and Good Luck.

part #: crs43405400vw8740 prices

• $169.95-$259.95

specifications cranshafengin:

• brand: Grabspeed Power Parts
• mpn: Crs-43405400vw8740
• part type: Rod
• manufacturer warranty: Yes
• country of origin: United States

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general cranshafengin:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

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• quantity: 1
• started: May 25, 2026
• availability: In Stock

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