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