Torque Specifications

 

Small Block Chevy Big Block Chevy
Fastener Type Torque Spec Fastener Type  Torque Specs
7/16 in. outer main cap bolt 65 ft.-lbs. Main cap bolt, 396-427 2-bolt 95 ft.-lbs.
7/16 in. inner main cap bolt 70 ft.-lbs. Main cap bolt, 396-454 4-bolt (inner/outer) 110 ft.-lbs.
3/8 in. outer main cap bolt 40 ft.-lbs. 3/8 in. connecting rod bolt  50 ft.-lbs.
11/32 in. connecting rod bolt 38-44 ft.-lbs. 7/16 in. connecting rod bolt 67-73 ft.-lbs.
3/8 in. connecting rod bolt  40-45 ft.-lbs. Cylinder head bolts, long 75 ft.-lbs.
Cylinder head bolts 65 ft.-lbs. Cylinder head bolts, short 65-68 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs. Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron heads) 30 ft.-lbs. Intake manifold bolts (cast iron head)  25 ft.-lbs.
Oil pump bolt 60-70 ft.-lbs. Oil pump bolt 65 ft.-lbs.
Cam sprocket bolts 18-20 ft.-lbs. Cam sprocket bolts  20 ft.-lbs.
Harmonic damper bolt 60 ft.-lbs. Harmonic damper bolt  85 ft.-lbs.
Flywheel/flexplate bolts 65 ft.-lbs. Flywheel/flexplate bolts 60 ft.-lbs.
Pressure plate bolts 35 ft.-lbs. Pressure plate bolts  35 ft.-lbs.
Bellhousing bolts 25 ft.-lbs. Bellhousing bolts 25 ft.-lbs.
Exhaust manifold bolts 25 ft.-lbs. Exhaust manifold bolts  20 ft.-lbs.

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