Catch 22
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Intake manifoldOne of the biggest drawbacks to the stock 5-liter engine is the long-runner EFI intake. The stock upper and lower unit is designed for low-rpm operation and to make lots of low-rpm and mid-range power. In this application it does a fine job, but it is not adequate for engines with big cams and/or high-flow heads. Simply swapping the stock intake for a Edelbrock Performer, Cobra, or TFS Street Heat intake will instantly add 15-30 horsepower, and you can find extra power when the manifold is combined with the properly sized throttle body and mass air meter. View Related Article
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