• 427 cubic inches
• 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
• 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