BBM Aluminum FE Engine Block (FE427 Side Oiler)

BBM Aluminum FE Engine Block

The new BBM FE engine block is significantly stronger than the stock block and is ideally suited for both restoration and high performance purposes.  It has a larger bore capacity, allowing for much larger displacement engines without the cylinder wall weakness issues that have plagued the stock OEM blocks.  Our BBM Aluminum FE engine blocks offer the additional weight savings of modern aluminum blocks and are cast in state-of-the-art, modern OEM foundries.

BBM Aluminum FE block features include:

• Exterior appearance to original 1965 FE sideoiler blocks

• Original true sideoiler oiling system

• Enlarged main oil passages

(As is customarily done by most FE experienced engine builders to OEM blocks. No oiling system modifications will be needed with the BBM block)

• Use of Virgin high-density aluminum

• Screw-in “freeze” plugs

• .750 inch thick deck for incredible strength and rigidity

• Cast with siamesed cylinder walls for maximum strength and rigidity

• Water jackets are cast solid, right up to the bottom of lower core plugs to maximize cylinder strength and support

• Centrifugally spun, high tensile strength, nodular flanged precision ground dry sleeve

• Max bore capability 4.320 inch, bores are 4.245-inches to be finish honed to 4.250 inches

• Accepts a 4.375 inch stroke

• 10.156 inch top of sleeve, 10.153 inch block deck height

• ARP 12 point cross-bolted main caps upgraded from stock 3/8 to 7/16, interference fit amid the block skirts without spacers. Locating dowels in the main saddles “Lock” the forged and heat-treated 8620 steel main caps in place

• Down under are heavier, thicker main webs and pan rails for superior strength

• Accepts both FE and Cleveland main bearings. Tangs are machined for both, allowing a wider choice of performance bearings

• Added cam bearing retaining set screw boss in six locations

• All cylinder head oil feed passages are tapped with 5/16 – 18 threads for easy placement of an oil restrictor if the use of a restrictor is desired

• ARP special extra long main studs supplied and installed

• ARP special extra long head studs can be supplied with extra cost

• Bosses cast in place for SOHC “Cammer” head oil drainbacks, ready for drilling if needed

• Machined and drilled for full hydraulic lifter capability

• Strengthening ribs cast into lifter valley area for increased rigidity and strength

• Weighs approx. 125 lbs

Out of Stock




Pair our BBM Fe Block with the BBM FE Cylinder Heads and BBM Tunnel Wedge Intake Manifold for unprecedented bolt-on strength, power, and reliability.