Databases of engine torque specifications are available from Tork Spec and MAHLE. Specifications are available from both sites by either the engine model or the make and model of the vehicle.
MAHLE provides a table organized alphabetically by make and then engine size. It is downloadable in PDF format. All information is provided by the Automotive Engine Rebuilders Association. The specifications included are for rod torque, main torque and cylinder head bolt torque. The values are given in foot-pound, which is abbreviated as ft/lbs.
Engine torque specifications from Tork Spec are searchable by make and model or by engine model. Along with ft/lbs, specifications are given in Newton meters, which is also written as N-m. Dimensions are also given for certain models.