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What Torque Specifications Should I Follow For My BluePrint Engine?

Many installation and maintenance procedures require proper torque specifications to ensure reliable operation and prevent damage to engine components. Always use a calibrated torque wrench and follow the component manufacturer's instructions when available.

 Common BluePrint Engine Torque Specifications

Header Bolts

  • 3/8"-16 bolts: 25 ft-lbs
  • 5/16"-18 bolts: 18 ft-lbs

We recommend rechecking header bolt torque after several heat cycles.

Spark Plugs

  • Aluminum cylinder heads: 25 ft-lbs

Always verify the spark plug manufacturer's recommendations before installation.

Valve Cover Bolts

  • Typical valve cover bolts: 10 ft-lbs

Avoid overtightening, as excessive torque can damage gaskets and valve covers.

Flywheel and Flexplate Bolts

Small Block Chevy Flywheel

  • 75 ft-lbs

BPP300116 Flywheel

  • 65 ft-lbs

BPP871006 Flexplate

  • 65 ft-lbs

Use thread locker where specified and follow installation instructions.

Important

Torque values may vary depending on:

  • Engine family
  • Aftermarket components
  • Fastener manufacturer

Always reference the documentation supplied with your engine when available.