Molnar Technologies 460-4600PC6F Big Block Ford 4340 Forged Crankshaft 4.600" Stroke

The Molnar Technologies 460-4600PC6F is a premium 4340 forged steel stroker crankshaft engineered for Ford and Mercury 429/460 Big Block Ford engines. Featuring a 4.600-inch stroke and 2.200-inch rod journals (Big Block Chevy sizing), this crank is purpose-built for high-performance street, strip, and racing applications demanding maximum displacement and durability.

Key Features:

• 4340 Forged Steel Construction — Premium material provides exceptional tensile strength and fatigue resistance over cast alternatives
• Multi-Stage Heat Treatment — Increases tensile strength and overall hardness throughout the crank
• Nitrided Main & Rod Journal Surfaces — Superior wear resistance for extended service life under high-load conditions
• Shot Peened Finish — Reduces surface fatigue and improves longevity under high-cycle stress
• 100% Mag Particle Inspected — Every crankshaft is inspected for cracks and internal defects before leaving the facility
• Precision Ground & Micro-Polished Journals — Held to the tightest tolerances in the racing industry for optimal bearing life
• .125" Radius on Rod & Main Journals — Increases journal strength and reduces stress concentration
• Traditional Long Post Crank Snout — Direct compatibility with standard BBF front accessory drives
• Internal Balance — Balanced internally for a clean rotating assembly setup

Specifications:

• Part Number: 460-4600PC6F
• Stroke: 4.600"
• Main Journal: 460 Ford (stock size)
• Rod Journal Diameter: 2.200" (Big Block Chevy size)
• Minimum Rod Length: 6.700"
• Bob Weight: 2,300 grams
• Balance: Internal
• Rear Main Seal: 2-Piece
• Material: 4340 Forged Steel
• Series: Standard Weight

Molnar Technologies crankshafts are a trusted choice among serious engine builders looking for race-proven rotating assembly components. This 460-4600PC6F delivers the stroke increase needed to push a Big Block Ford build well beyond stock displacement, making it ideal for maximum-effort performance and competition engines.