Chevy 8.1 Engine Exhaust Manifold Torque Specs

by Robert Tomashek

Large-displacement gasoline engines, such as your 8.1-liter V-8, can produce great power without the noise of a diesel. The 8.1-liter produced 340-horsepower and 455 foot-pounds of torque, and was available in the heavy-duty General Motors trucks from 2001 until 2006.

Torque Specifications

Using a torque wrench, tighten the center bolt to 26 foot-pounds. Working from the center bolt outward -- alternating from one side to the other -- tighten the nuts to 12 foot-pounds.

About the Author

Robert Tomashek is an automobile technician and educator with more than 15 years of experience. He is ASE master certified and also carries certifications from IMACA, MOOG, Monroe, EPA and Four Seasons. He has a degree in automotive/diesel technology. He has written articles for various websites and teaches automotive technology at Universal Technical Institute.

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