The 1965 Chevrolet pickup truck was available with the 194 and 230 cubic inch six-cylinder engines and with the 283 and 327 eight-cylinder engines. Aside from the different displacement, the two six-cylinder engines are essentially the same, as are the two eight-cylinder engines. An important part of repairing any of the four engines is to properly tighten the engine's bolts. Tightness is referred to as "torque," and a torque wrench is used to tighten bolts to the proper specification.
The spark plugs for all engines must be tightened to 25 ft-lb of torque.
The head bolts for the 194 and 230 engines must be tightened to 95 ft-lb of torque. The head bolts for the 283 and 327 engines must be tightened to 65 ft-lb of torque.
There are two specifications for the 194 and 230 engines. The bolts on the ends of the intake manifold must be tightened to 20 ft-lb of torque. The remaining bolts must be tightened to 30 ft-lb of torque. The intake manifold bolts on the 283 and 327 engines must all be tightened to 30 ft-lb of torque.
There are two specifications for the 194 and 230 engines. The bolts on the ends of the exhaust manifold must be tightened to 20 ft-lb of torque. The remaining bolts must be tightened to 30 ft-lb of torque. The exhaust manifold bolts on the 283 and 327 engines must all be tightened to 20 ft-lb of torque.
Note that the following specifications are measured in inch-pounds rather than foot-pounds. The rocker arm cover bolts for all engines is 55 in-lb of torque.
The connection rod bolts must be tightened to 35 ft-lb of torque for all engines.
The main bearing cap bolts must be tightened to 65 ft-lb of torque for all engines.
The flywheel bolts must be tightened to 60 ft-lb of torque for all engines.
The vibration dampener bolt for the 327 must be tightened to 60 ft-lb of torque. No torque specification applies to the remaining engines, as they featured a pressed-on dampener.
