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Tag Archives: 5.3-liter engine

Speed Secrets: LSXR vs. Stock Truck Intake Dyno Test! Which Makes More Power?

Screen Shot 2019-07-30 at 1.28.05 PM

Working with the experts at FAST, it’s time to test the factory 5.3-liter intake manifold against the LSXR intake manifold. If this goes like any of the prior testing, the FAST manifold is going to be a tough one to beat. This is even truer with heavily modified engines, but how well will it work on a milder 5.3-liter engine? ... Read More »