Home/1979-93 Mustang Blocks and Shortblocks Ford Performance Boss 427 shortblock, all forged, 4.125 bore x 4.00 stroke $9,975.00 Ford Performance Boss 460 stroker 351W shortblock, all forged Contact Us Ford Performance Boss 363 Shortblock, all forged, 4.125 bore x 3.40 stroke Contact Us Ford Performance 347 shortblock, all forged Contact Us ATK Performance 408 Stroker Shortblock, roller block, forged Contact Us ATK Performance 408 Stroker Shortblock, roller block, all forged Contact Us ATK Performance 347 Stroker Shortblock, all forged internals Contact Us ATK Performance 393 Stroker Shortblock, roller block, forged Contact Us ATK Performance 331 Stroker Shortblock, forged Contact Us ATK Performance 351W Shortblock Contact Us Don’t see what you are looking for? Give us a call or send an email. We sell thousands of additional parts not listed on the website.