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View Full Version : How Much Power Do Headers Add to a 5.7 Hemi?


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05-04-2020, 04:47 PM
There are millions of factory 5.7L Hemis running around in cars, trucks, and Jeeps. And although the engine used in this story isn’t factory stock, it does show you what kind of gains adding airflow to the Hemi’s equation can be dah. To recap the build of this Gen. III Hemi, it’s a 5.7-liter engine



More... (http://www.fourwheeler.com/how-to/engine/gen-3-hemi-header-test)