engineTiming Chain Kit Torque Specsfor 1963 Mercury S-55 406ci V8 · RWDUnitslb-ftNm2 fastenersSeqComponentTorqueAngle—Camshaft sprocket boltCritical40 lb-ft · 54 Nm——Harmonic balancer boltCritical70 lb-ft · 95 Nm—📝 Suggest a correction to this torque spec