Description

  • New design casting incorporating the best designs of Mark IV and Gen VI
  • Production type cast-iron 4-bolt block
  • 4.250” finished bore
  • 4.310” max bore (non-siamese 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
  • Can be drilled for use with 10-bolt front timing cover
  • Additional clearance added for roller timing chains
  • Auxiliary oil pressure line added to the 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