Ford Performance BOSS 302 Cylinder Block; Big Bore

Proven for Track Performance. The Ford Performance BOSS 302 Cylinder Block with Big Bore is an engine block with a proven capability on the race track and on the street. Its 4.125 bore capacity makes it a winner right out of the box along with its superior design and construction. This ready to assemble block will indeed expand your Mustang’s racing performance.

For a Simple and Economical Assembly. This high-performance engine block has been designed for simple, fast, and economical assembly. It has been machined to accept factory roller lifter guides and lifter guide retainer. It has also been machined with an additional .125-inch at the initial block fixturing and boring stage. And with its design, this engine block will support engine sizes of up to 363 cubic inches with an unfinished 4.120-inch bore size.

Designed for Long-Lasting Use. The BOSS 302 Cylinder Block has been cast and machined for long-lasting durability. It has been made out of diesel-grade iron with Siamese bores, along with thick decks and walls. To ensure optimum performance, this engine block requires the special length 1/2" head bolts M-6065-BOSS or head studs M-6014-BOSS with M-6049-X306/307/Z304DA heads. It should also be noted that this block is designed for M-6049-X306//X307/C3/D3/Z304DA cylinder heads. It is not intended for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads

Important Note: This cylinder block is designed for use on competitions only. Installation of this engine on a vehicle that is driven on public roads and highways may violate US and Canadian emissions laws and regulations.

Application. The Ford Performance BOSS 302 Cylinder Block with Big Bore has been designed to fit all Ford Mustang vehicles.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov