Hamilton Cams Competition 6.7 Block


SKU: 07-B-006 Categories: , , Tag:


Want to make big power without the expense of buying longer rods, or a deck-plate block? This is the answer!


This block features a

-1″ thicker deck-

-OEM 6.7 deck height

-1″ thicker cylinder base

– the cylinder wall that is cooled is effectively 2″ shorter due to the extra material at top and bottom of the cylinder

-Much Thicker main webbing

-OEM 250 MPA cast iron or improved 300 MPA high tensile alloy

-If running High tensile, alloy we suggest DLC coated Toolsteel Total Seal rings.

-High tensile alloys should be honed with diamond hone.

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

-Do not tap main holes deeper, this is the source of the failure for most of the block failures we see

-Due to the many requests we have for different bore sizes we left the bore as cast so it can be anything you want, from approximately 4.0″ to 4.250″

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




Additional information

Engine Year

2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019


Cummins 6BT

Product Type

Engine Blocks

Cummins Cam Combos