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Chevy Torque Specs

You don't need to do a lot of book work to find torque specs for your Chevy engine, because we've done it for you! Just print it out and post it in your shop or toolbox.

These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Other lubes, moly, and aftermarket bolts will have different torque specs.

Small Chevy

Fastener Type Torque Spec

7/16 in. outer main cap bolt 65 ft.-lbs.
7/16 in. inner main cap bolt 70 ft.-lbs.
3/8 in. outer main cap bolt 40 ft.-lbs.
11/32 in. connecting rod bolt 38-44 ft.-lbs.
3/8 in. connecting rod bolt 40-45 ft.-lbs.
Cylinder head bolts 65 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron heads) 30 ft.-lbs.
Oil pump bolt 60-70 ft.-lbs.
Cam sprocket bolts 18-20 ft.-lbs.
Harmonic damper bolt 60 ft.-lbs.
Flywheel/flexplate bolts 65 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Bellhousing bolts 25 ft.-lbs.
Exhaust manifold bolts 25 ft.-lbs.



Big Chevy
   

Fastener Type   Torque Spec

Main cap bolt, 396-427 2-bolt   95 ft.-lbs.
Main cap bolt, 396-454 4-bolt (inner/outer)   110 ft.-lbs.
3/8 in. connecting rod bolt   50 ft.-lbs.
7/16 in. connecting rod bolt   67-73 ft.-lbs.
Cylinder head bolts, long   75 ft.-lbs.
Cylinder head bolts, short   65-68 ft.-lbs.
Screw-in rocker arm studs   50 ft.-lbs.
Intake manifold bolts (cast iron head)   25 ft.-lbs.
Oil pump bolt   65 ft.-lbs.
Cam sprocket bolts   20 ft.-lbs.
Harmonic damper bolt   85 ft.-lbs.
Flywheel/flexplate bolts   60 ft.-lbs.
Pressure plate bolts   35 ft.-lbs.
Bellhousing bolts   25 ft.-lbs.
Exhaust manifold bolts   20 ft.-lbs.
     

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