The Speedmaster PCE274.1047 H-beam connecting rods are precision-engineered components designed for Chrysler 318, 340, and 360 engine builds and rebuilds. These rods feature a sturdy H-beam design with 4340 material construction and bronze bushings, providing reliable strength and durability for high-performance and stock engine applications. The specified dimensions (6.123" length, 2.125" big end, .984" small end) ensure proper fitment and OEM-compatible operation.
These connecting rods are essential components for engine assembly, restoration, and performance upgrades on classic and modern Chrysler engines in these displacement classes. The combination of H-beam geometry and 4340 alloy steel delivers the rigidity and fatigue resistance needed for consistent engine reliability. Whether you're rebuilding a factory engine or upgrading an existing powerplant, these rods provide the foundation for dependable operation across a wide range of driving conditions.
Key Features & Benefits
- H-Beam Design: Optimized geometry delivers superior strength-to-weight ratio for reliable performance.
- 4340 Material: Durable alloy steel construction provides excellent fatigue and tensile strength.
- Bronze Bushings: Precision bushings ensure smooth articulation and proper bearing surface.
- Chrysler 318/340/360 Fitment: Direct compatibility with Chrysler small-block engines in these displacements.
- Precision Dimensions: 6.123" length, 2.125" big end, .984" small end for accurate engine assembly.
Specifications
| Brand | Speedmaster |
| Model/MPN | PCE274.1047 |
| Product Type | Connecting Rods |
| Rod Design | H-Beam |
| Material | 4340 Alloy Steel |
| Bushing Type | Bronze |
| Rod Length | 6.123 inches |
| Big End Diameter | 2.125 inches |
| Small End Diameter | .984 inches |
| Engine Compatibility | Chrysler 318, 340, 360 |
Ideal Applications
- Engine rebuild and restoration for classic Chrysler small-block vehicles
- Performance upgrade for Chrysler 318, 340, or 360 engine swaps
- Factory engine assembly and replacement on compatible Chrysler engines
- Hot rod and custom engine builds using Chrysler power plants