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.
ImportantTorque values may vary depending on:
- Engine family
- Aftermarket components
- Fastener manufacturer
Always reference the documentation supplied with your engine when available.