• Material: High-density cast iron
• Deck Height: 9.500 in.
• Deck Thickness: .600 in. minimum
• Cam Bearings: Stock (can be bored to 60mm)
• Lifter Bores: Cross-feeds between pairs to maintain pressure
• Bore: 3.990 in. (bore to 4.000 in.)
• Cylinder Head Attachment: 2 extra head bolts per cylinder
• Maximum Bore: 4.200 in. (470 ci with maximum stroke crank)
• Water Jackets: Expanded for better cooling
• Lubrication: Priority main oiling system
• Filtration: Integral mount spin-on filter
• Oil Pan Rails: Stock Ford
• Crank Clearance: Can use up to 4.250 in. crank
• Main Caps: Splayed billet steel
• Oil System: Has .500 in. feed; bosses for dry sump

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART