PanShovel Heads – OEM Bore, Keihin CV Intake

Description

PanShovel Heads, OEM Bore by Speed And Science ®.

• Billet Aluminum (6061-T6) PanShovel heads / intake system for the Harley-Davidson™ Shovelhead models.
• Bolt-on installation for all ’66-’84 72CUI or 80CUI Shovelhead models, designed to match OEM shaped pistons (not supplied) – including all available overbore sizes.
• This system achieves very strong torque curve and very respectable HP that peaks exactly where needed.
• Our product is user-friendly and easy to service down the road also. No custom pistons, valves, guides, fasteners, etc. to worry about.
• Fast, very efficient ports designed to make peak power/torque within the useful RPM range. Your bike will pull hard from the get-go all the way up to the redline. The longevity and fuel mileage won’t suffer either.
• Proprietary, super-fast design of the combustion chamber yields 10.35:1 calculated compression ratio with OEM-shaped pistons (@ 80CUI). Works well on the hi-octane (e.g. North American 94) pump gas. Compression releases included for easy starting.
• Valvetrain (AV&V and KPMI) components accept up to .625” valve lift, with almost .200” lift before valve-to-valve contact. Using tall camshafts may require an additional machining to provide necessary clearances.
• Increased cooling area drops the head’s operating temperature up to 35F.
• Single (Y-Split) CNC Billet Aluminum Intake Manifold with seals is included and interfaces with KEIHIN CV, etc. We have completely redesigned the Intake <–> Head interface via proper EVO seals to eliminate vacuum leaks.
• Exhaust interface accepts both OEM single-bolt flanges as well as the aftermarket three-bolt pattern.
• Hi-tensile steel thread inserts (headbolts, intake, exhaust) installed; all original thread sizes, no need for “special” fasteners.
• OEM oil drain location.
• ***The difference in surface finish between the Intake (coarser) and Exhaust (smoother) ports is intentional.
• Warranty details and conditions are listed in the Installation Manuals ( Manuals download page )