8.1 Vortec Performance Modification & Upgrade Guide
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8.1 Vortec Performance Modification & Upgrade Guide

The big 8.1 Vortec came with pretty good power levels from the factory. However, just a few bolt-on modifications like tuning, intake manifolds, headers, camshafts, and cylinder heads can add some impressive horsepower and torque. The engine can handle about 550whp before needing some more advanced upgrades like internals. We’re going to cover five modifications…

Chevy 8.1L Vortec Common Engine Problems
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Chevy 8.1L Vortec Common Engine Problems

The 8.1L Vortec was considered the diesel-alternative in the Chevy line and was designed to be big enough to produce comparable power and towing capabilities to that of the diesels. These engines are known to be overbuilt, leading to nearly bulletproof reliability. The strong cast iron block and heads means that this engine can handle…