What do you torque the heads on a 350 Chevy?
Small Block Chevy Torque Specs
| Fastener Type | Torque Spec |
|---|---|
| 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. |
What are the torque specs for head gasket?
Many cylinder heads require multiple torque sequences to achieve proper tension. For example, a 10-bolt cylinder head may require you to tighten them all first to 42 foot-pounds in a specified order, then to 75 foot-pounds in the same order. Improper sequencing or torquing of the bolts may result in damage.
What is the torque pattern?
Bolt tightening sequence, or torque sequence, is defined in the torque tightening procedure. Flange joints are torqued tight with the help of a torque wrench (manual or hydraulic). Torque bolts and nuts in a “CRISS-CROSS” sequence using a minimum of three torquing passes and the maximum bolt stress as defined.
What is the torque specs for the rocker arm?
For 3.1-liter engines built between 1995 and 1997, the rocker arm bolts require two steps to reach 7.42 foot-pounds of torque in order to attach to the cylinder head. For later engines, these same bolts should receive 14 foot-pounds of torque to join properly.
Can you use head bolts twice?
Bolts are designed to stretch as you torque them into place, and when you remove them, they snap back to their original position. Because of this, many standard head bolts are okay to use more than once, as long as they have not been stretched past their spring back point.
Can a leaking head gasket be Retorque?
If you catch any seeping you can try retorquing the bolts, but if anything gets between the gasket and the block or head surface it may be too late to save yourself from installing a new head gasket. Modern head gaskets don’t have this issue and as such don’t require retorquing.