Engine - Block Components - Gen V Short Deck (9.800 inch) Pro Stock Bow Tie Bare Block

From GM Performance - The Gen V Pro Stock Bow Tie bare block has been the standard for the serious pro stock or boat racer. The Bow Tie block has siamesed cylinder walls, and a two-piece rear main oil seal. Some of the standard features of the block are: extra thick deck surfaces with blind tapped head bolt holes, priority main oiling, no mechanical fuel pump boss, improved coolant flow around the No.1 cylinder, and inner head bolt bosses. This block also has steel four-bolt splayed bearing caps. Mark IV style cylinder heads can be used on this bock.