Speedmaster PCE274.1059 H-Beam connecting rods are forged from 4340 chromoly steel and feature a 6.735-inch center-to-center length, 2.499-inch big-end bore, and 0.98-inch pin bore, delivering the strength and dimensional precision demanded by high-performance Oldsmobile builds. Bronze small-end bushings are included, supporting full-floating wrist pin configurations for smooth, reliable operation under elevated cylinder pressures.
Engineered as direct replacements for Oldsmobile 400, 425, and 455 cubic-inch engines, these H-beam rods are an ideal upgrade for street, strip, or marine applications where stock rods have reached their limits. The robust H-beam profile optimizes strength-to-weight ratio, helping reduce reciprocating mass while maintaining the structural integrity needed to handle serious power levels.
