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SB Ford Aluminum

BMP Small Block Ford Aluminum Blocks

Bill Mitchell Products (BMP) unique Small Block Ford aluminum block represents the state of the art design in small block Ford technology, incorporating many important features that leading Ford racers have asked for. Tipping the scales at only 90 lbs, it is reinforced throughout, and has provisions for two extra head bolts per cylinder to provide superior clamping of the heads, essential for high combustion pressure applications. BMP's SBF 10° cylinder heads are similarly equipped to be the perfect match to the block. Add 1045 billet steel splayed 4-bolt mains and ARP hardware for bottom end strength and bring on the power adders!!  Formerly known as the World Products MAN O’WAR cylinder block.

There are many important reasons why BMP's SBF aluminum blocks are the most reliable of their kind on the market. It features a priority main oiling system which ensures that the crankshaft is lubricated first and the cylinder heads last. Water jackets are expanded over other block designs to improve cooling. And the block is reinforced in all critical areas, including bulkheads, mains, and valleys. It’s a CAD engineered masterpiece!

We are currently in the middle of some foundry updates and at the same time decided to use the down time  to upgrade the tooling to improve the casting quality. Projected ship dates to begin in late 2018.


  • Material: 357-T6 Aluminum 
  • Deck Heights: 8.200" OR 9.500"
  • Deck Thickness: .600" minimum 
  • Cam Bearings: Stock Small Block Ford (can be bored to 60mm)
  • Camshaft location: Stock
  • Lifter Bores: Indexed Stock .875" bore
  • Main Bearings: 302/2.248", 351/2.749"
  • Bore Spacing: 4.380"
  • Bores: 3.990" or 4.115"
  • Maximum Bore: 4.155" Sleeve OD is 4.260" leaving more aluminum between each of the bores to increase the strength
  • Sleeves: Centrifugally cast ductile iron
  • Water Jackets: Expanded for better cooling
  • Lubrication: Priority main oiling system. Cross bank lifter oiling, Dry sump capable 
  • Filtration: Integral mount for spin-on filter
  • Oil Filter Adapter: Standard, Genuine Ford OEM Part - F1AZ6890B
  • Oil Pan Rails: Solid, Stock Ford 
  • Crank Clearance: Up to 3.470" stroke (8.2") and 4.25" stroke (9.5")
  • Main Caps: 4 bolt splayed billet 1045 steel, All 5 caps are a 4 bolt design with center 3 caps having splayed outer bolts
  • Main Cap Locators: Stock registers @ ring dowels at the center studs
  • Main Cap Hardware: ARP 1/2" Stud Kit
  • Rear Main Seal: Stock Ford one piece
  • Fuel Pump: OEM
  • Starter: OEM mount
  • Cylinder Head Stud/Bolt Holes: Extra deep holes for more thread engagement, Blind tapped to prevent water leaks.
  • Weight: 108 lbs. with caps and sleeves
  • Cam Bearings: Durabond 
  • Dowel Pin Kit: BMP 701585-K
  • Oil Restrictors: BMP 701808-2
  • Rear Seal: 302 MR Gasket 30 / 351 Mr Gasket 31

Click to view Instruction Sheet - PDF - Adobe Reader Required