Pistons: Forged Mahle 4.150 inch bore w/ floating wrist pin 30cc dish, 1.245 comp. height. Valve reliefs for Z304D, Z304P, N351, and other inline valve Windsor cylinder heads. Check piston to valve clearance.
Balanced: Internal use neutral balance flywheel
Hydraulic roller camshaft compatible
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
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.
Assembled and ready for your heads, cam and timing chain set
Requires head gaskets M-6051-R351
351W bolt pattern for oil pan and timing cover
High-performance harmonic balancer M-6316-D302 is recommended and sold separately.