6.7 Block with 5.9 bore Hi-test alloy


SKU: 07-B-004 Category: Tag:


want to make 1200hp, but don’t want to do a deckplate? This is the solution!

-4.020″ bore but can be machined all the way to 4.250″

-OEM 6.7 deck height

-Cam oiling from mains has been shrunk from 7mm to 5mm for improved bottom end strength

-The thinner the wall, the less cylinder pressure you can run without failure 😉




Additional information

Engine Model

Engine Type


Type (Street Only)