GMC Exhaust Manifolds

Headers and manifolds differ in design and function. Long tube headers, shorty headers, and exhaust manifolds each have their pros and cons regarding performance and application.

Learn how to wrap exhaust headers to help keep under hood temperatures down. This articles shows how cast iron exhaust manifolds are wrapped in 1-inch black header wrap with stainless steel exhaust wrap ties.

Inside GM’s Gen V LT engine family: history, tech, and performance of each LT engine option available.

See how to install 3" Ram Horn exhaust manifolds on a C/10 with a 406 engine. Learn some tips on welding steel tubing to a cast iron manifold and how they are modified to fit the truck.

Dual plane or single plane intake manifold? Which is the best for your project vehicle's engine? Learn the differences in our buyer's guide.

Keep your rear cylinders running cool in a high performance engine by installing a water bypass kit to the intake manifold.

Understand GM’s AFM system—how it operates, it’s pros and cons, common lifter failures, and your options for tuning, disabling, or full AFM delete.

The history behind the Edelbrock Slingshot Intake Manifold for a Flathead Ford V8 engine. Learn why it was designed and how you can add it to your hot rod as a conversation piece.

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.