Dart SHP Block SB Ford 351 4.125 bore 31375235

The SB Ford 351w Dart SHP block is tailored to the most popular performance and racing applications, with an 9.500' (351) deck height and 4.125' siamesed cylinder bores which can safely be bored to 4.185. Steel main caps are splayed 4-bolt on the center three and 2-bolt on #1 and #5, and utilize 1/2' bolts. The valley ismachined to accpet factory roller lifter guides and retainer (spider). Designed for high performance and heavy duty applications producing 600 horsepower, the SHP Ford block is theideal starting point for hot rodders, drag racers, curcle track competitors, off-roaders and high performance marineenthusiasts. SHP blocks are manufactured on Dart's in-house CNC machining centers to precision tolerances. The SHP block's siamesecylinders have a .230 minimum wall thickness at 4.185' bore diameter. other features include a true priority main oilingsystem that ensures reliable lubrication at high rpm, .625' thick decks with blind 1/2' head bolt holes and clearancefor long stroke crankshafts. The SHP block retains the Ford small block's original dimensions and is compatible withmost stock components.