Caterpillar 3406 key engine specs and torques with links to more at Barrington Diesel Club. Basic specs include images, displacement, dimensions and weight, key torques, the characteristics of the engine like its power and torque. There are many links to more torques, assembly clearances, specifications, and workshop procedures for these engines. Links to full workshop manuals are on this webpage. Barrington Diesel Club provides specs, bolt torques, assembly clearances and workshop procedures and manuals for many makes and models of diesel engines.