What Are the Bolt Torque Specs for a Oldsmobile 3.4 Liter V6?

The 3.4-liter V-6 engine installed in vehicles such as the Oldsmobile Silhouette from 1997 until 2004 belongs to the General Motors 60-degree, V-6 engine family. The most recent year it was used, this engine had a bore of 3.6 inches and a stroke of 3.3 inches. With a compression ratio of 9.5-to-1, the engine produced 185 horsepower at 5,200 rpm and 210 foot-pounds of torque at 4,000 rpm when placed in the 2004 Oldsmobile Silhouette.

Cylinder Head

In this 3.4-liter engine, the cylinder head bolts to the block with 44 foot-pounds of torque applied in two distinct steps. The camshaft-housing-to-cylinder-head bolts should receive 20 foot-pounds of torque.

In engines manufactured in 1995, the exhaust manifold and cylinder head join with 18 foot-pounds of torque. In engines manufactured after 1995, the same components join with 9.67 foot-pounds. The intake manifold attaches to the head with 30 foot-pounds of torque. The spark plug requires 11 foot-pounds of torque to attach to the cylinder head.

The rear bolts that attach the A/C compressor to the block require 19 foot-pounds of torque and the front bolts require 36 foot-pounds. Both the camshaft position sensor and the crankshaft position sensor bolt to the block with 8 foot-pounds. The engine block and transaxle join with 55 foot-pounds of torque, while the crankshaft bolts to the block with 37 foot-pounds of torque applied in two separate steps.

The oil pan bolts to the block with 8.08 foot-pounds of torque. The oil-pump-to-engine-block mounting bolts receive 40 foot-pounds of torque. The cover for the oil pump bolts to the engine block with 7.42 foot-pounds. The water pump receives 7.42 foot-pounds of torque to attach to the block.

The drain plug for the oil pan should receive 18 foot-pounds of torque to prevent oil leaks. The connecting rod and crank attach with 15 foot-pounds of torque. The flywheel joins with the crankshaft with 60 foot-pounds of torque. The fuel-pressure-regulator-to-fuel-line nut requires 13 foot-pounds of torque. The bolts joining the fuel rail to the intake manifold tighten to 7.42 foot-pounds of torque. The pulley and water pump join with 18 foot-pounds of torque, and the camshaft damper bolt requires 8.08 foot-pounds of torque.