Ford Cleveland Engine Block 4.000" Bore 9.200" Deck 2.750" Mains 4 Bolt Splay

Ford Cleveland Engine Block — 4.000" Bore / 9.200" Deck / 4-Bolt Splayed Caps

Engineered for serious street performance, this brand-new Aeroflow Performance Ford Cleveland block is a heavy-duty, cast-iron foundation designed to minimize initial machining while delivering unmatched strength. Featuring Siamese cylinder bores and four-bolt billet steel main caps with a priority oiling system, it’s built to handle higher-power builds with reliability. This is a semi-finished bare block intended for professional machining to match your internal components, offering a robust starting point for a precision Cleveland setup.

• Material: Cast iron block, constructed from premium Class 32B iron
• Cylinder bore diameter: 4.000" (with a maximum bore of 4.155" and stroke of 4.125" available)
• Deck height: 9.200"
• Mains: 2.750" with four-bolt splayed billet steel main caps
• Main cap bolts: 1/2" & 3/8" on end caps (Caps 1 & 5); 7/16" bolts on center three caps (Caps 2, 3 & 4)
• Main cap register: Deep stepped register (no dowels required)
• Cylinder wall thickness: Minimum.250" at the 4.155" bore
• Cam journal OD: STD (can be bored to 55mm)
• Fuel pump: STD mechanical provision; pushrod: STD
• Oil system: Main priority oiling (can be used with dry sump); oil pump shaft: STD; oil filter: STD; oil pan: STD
• Lifter bores:.874"
• Rear main seal: STD
• Timing chain/gears: STD; Timing cover: STD
• Weight: 94 kg (208 lbs)
• Finish and machining notes: This block must be professionally finish machined; blocks are finished within factory +/- tolerances, with tighter specs where applicable. Cam bearing OD should be deburred before installation; when removing main caps, deburr both caps and block to maintain correct main size
• Application notes: Aeroflow blocks are designed as the ideal starting point for street performance builds that demand quality and precision at a reasonable price; few aftermarket components are drop-ins without additional machining
• Pickup: Pick Up only

Why choose this Cleveland block? It provides a sturdy, semi-finished foundation with a proven oiling philosophy, durable main caps, and a generous deck height to seal head gaskets reliably. Plan on professional machining to match your pistons, crank, and rods, and expect some bore work to achieve the desired skirt clearance. This block is the intelligent, cost-efficient entry point for a high-performance Cleveland build that balances strength, accuracy, and compatibility with standard components.