Ford Performance 427 Cubic Inch Cast Iron Boss Short Block

M-6009-427F

The Ford Performance 427 short block lets you build it your way by adding your choice of heads, cam, intake and oil pan. It's the perfect foundation to build a powerful 9.5" deck engine for your vintage muscle car, street rod, Fox Body or Late Model Mustang. This is the same short block used in the 575 HP Z427 crate engine. Nothing but the best parts are used inside including: forged crankshaft, forged I-beam connecting rods with floating piston pins and the BOSS 351 block. This short block is hand assembled with performance clearances in the US. The 427 short block fits many of the vehicles originally built with Windsor and Cleveland small blocks.

• Engine type: 351W based small block Ford
• 427 cubic inches
• Bore x stroke (in): 4.125" bore x 4.00" stroke
• Boss 4-bolt main block M-6010-BOSS35195 9.5" deck height
• Mahle forged aluminum 4.125" bore pistons with valve reliefs for Z304, N351, GT-40 and other inline valve Windsor cylinder heads. 17cc effective dish volume, check piston to valve clearance
• .005" below piston to deck height nominal
• SCAT 4.000" stroke forged steel crank
• SCAT forged steel H beam connecting rods with floating pin
• Hydraulic roller camshaft compatible
• Neutral Balance rotating assembly
• Recommended cylinder head fasteners M-6065-BOSS head bolts, M-6014-BOSS studs, or M-6014-Z304 studs, depending on application
• Most aftermarket performance cylinder heads are compatible with this short block. Ford Performance short blocks are built with pistons designed for 20 degree valve angle heads and will fit stock or spread valve guide centerlines.
• Designed for M-6049-X306//X307/C3/D3/Z304DA cylinder heads. Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads
• Assembled and ready for your heads, cam and timing chain set
• Requires head gaskets M-6051-R351
• Built with all NEW PARTS
• Photo and specs may vary