Customers re-drilled the Vortec heads for the conventional small-block Chevy intake bolt pattern and ran into trouble when they tried to bolt on their factory GM TPI intake.

Read the tech article on a TPI Intake for the Vortec Head, brought to you by the experts at Chevy High Performance Magazine.

Vortec VariationsAs we said earlier, the intake bolt pattern on production Vortec heads is unique and as a result a Vortec-style intake manifold (or fuel injection system) is required.

Join the experts at Street Rodder as they install the Edelbrock air-gap dual quad intake manifold.

Outside of faulty ICV and TPS sensors, a few other problems plague the Vortec 4300. Worn-out intake manifold gaskets are a common issue for this engine and can cause vacuum and coolant leaks.

General Motors' Vortec engine was the heart of GM pickup trucks for 15 years. If you have one under your hood, don't neglect these upgrade opportunities.

Big block engines used to power some of the toughest trucks, but they've fallen to the wayside. Chevy's final big block engine was one of the biggest ever.

Information about GM's 5.3L V8 Vortec engine used in the Chevrolet Tahoe/Suburban and GMC Yukon/Yukon XL, including specs, vehicle applications, and more.