1991 GMC Syclone Headers and Exhaust Parts

Whether you’re looking for performance improvements or heat reduction, if you decide to wrap your headers, we'll show you the benefits and possible precautions to take before you wrap your exhaust.

Which size of headers should I use? Short or long tube headers? Etc. Learn how to answer these exhaust questions and choose the right header with our expert guide.

Watch our video on the ceramic coating process for Armor Hot Coating. Headers coated with Armor Hot Coating protect your car without sacrificing looks.

In this Tech Tip, John talks about what can be expected when converting to suicide doors.

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Need help selecting the best cylinder head gaskets for your engine? Click here to learn the differences between copper, steel shim and MLS head gaskets. Plus install tips!

Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! In this video, Joe and Wyatt discuss the features that bring the vaunted camel hump heads into the 21st Century.

Learn how to re-build a junkyard Small Block Chevy. A step-by-step guide on how to select a SBC, machine the valve guide bosses down, and what parts to use to upgrade to your personal liking.

Engine Cylinder Numbers

Need a little help Identifying GM Body Styles 1964-1972? Click Here!