Cummins V378,V504 and V555 engine specs, bolt tightening torques and workshop manual at Barrington Diesel Club. Basic specs are open to everyone and include images, displacement, dimensions and weight, key bolt tightening torques, the characteristics of the engine like its power and torque.Key bolt tightening torques are the main bearing cap bolt torques, the connecting rod cap bolt torques and the cylinder head bolt torques. We have a comprehensive workshop manual for these engines. We provide engine specs, bolt torques, manuals and technical data for many makes and models of diesel engines.