Specification:

• Cylinder Bore Diameter: 4.000"
• Max Bore & Stroke: 4.185" x 4.125"
• Cam Journal OD: STD SBF (can be bored to 55mm)
• Cam Plug: 2.375" Press In Cup
• Cam Location: STD
• Cylinder Wall Thickness: .250". min @ 4.185" Bore
• Deck Height: 9.500"
• Deck Thickness: .675" Min
• Fuel Pump: STD Mechanical Provision
• Fuel Pump Pushrod: STD
• Freeze Plugs: STD 1.500" Press In Cup
• Lifter Bores: .874"
• Main Bearing Size: 2.749" (351C)
• Main Bearing Bore: STD (351C)
• Main Cap Bolts: 1/2" & 3/8" on Caps 1 & 5, 7/16" Splayed on Caps 2, 3 & 4
• Main Caps: Billet Steel, 3 Center Caps Splayed
• Main Cap Register: Deep Stepped Register (no need for dowels)
• Oil System: Main Priority Oiling (can use dry sump)
• Oil Pump Shaft: STD SBF
• Oil Filter: STD SBF
• Oil Pan: Modified STD 351W
• Rear Main Seal: STD 1-Piece
• Serial No. Location: Right Front & Main Caps
• Starter: STD
• Stud Holes, Head: STD 1/2" Blind Holes
• Timing Chain / Gears: STD
• Timing Cover: STD
• Torque Specs: 1/2" Bolts 105 ft. lbs., 7/16" Bolts 65 ft. lbs., 3/8" Bolts - 35 ft. lbs.
• Weight: 94kg (208 lbs.)

Important Imformation:

• Sizes in reference to Deck Height, Cylinder Bore, Wall Thickness, etc, listed in these instructions are Nominal. This Block must be professionally finish machined.
• Due to a vast difference of opinion among professional builders regarding specifications and procedures, all blocks, when purchased bare, are finished within factory +/- tolerances. Tighter than factory or OE specs when applicable.
• Cam bearing OD should be de-burred before installation.
• When initially removing main caps, the caps & block should be de-burred before reinstalling; this will insure that correct main size is maintained.
• This Block should be assembled by experienced, professional engine builders. Many parameters such as Cylinder Bores will need additional, professional machine work.
• Many pistons are oversized, and cylinder bore must be honed to correct skirt clearance. Very few aftermarket components are drop ins to any engine block, without additional checking/machining.