502 MerCruiser / GM Marine Gen6 Brand New engine block with fuel pump provision

Description

• New GM 502 casting incorporating the best designs of Mark IV and Gen VI
• Production type 1pc seal cast-iron 4-bolt block
• 4.446" finished bore
• 4.560" max bore
• Machined fuel pump pad
• New water jackets for use with Mark IV or Gen VI heads
• Revised oiling to allow for bigger cam bearings/cam lift
• Bolt boss (not machined) added near distributor hole like 8.1L
• For use with 6 bolt front timing cover
• Additional clearance added for roller timing chains
• Auxiliary oil pressure line added to front of block
• Racing style oil filter cast feature with added oil pressure port
• Additional boss for manual transmission clutch pivot (machined)
• Additional material added around lifter bosses