The Hellcrate Redeye features a larger 2.7-liter supercharger with an increased boost pressure of 14.5 psi as compared to the standard crate engine’s 2.4-liter supercharger with a boost pressure
Nonetheless, with 345 horsepower and 375 lb-ft of torque, the new 5.7-liter V8 was one of the most powerful mass-produced engines at the time, which also happened to deliver decent fuel economy
To get the best gains I recommend a ported throttle body,dual exhaust, Cams,ported lower intake,headers.3.64 rear end swap,meth injection. The stage 3 with ported throttle body,dual exhaust = 320-340rwhp. The V/6 3.5 stock is 185-195rwhp. The V/6 3.5 with ported tb dual exhaust 205rwhp.
The Edelbrock Supercharger System part #15175 for 2015-18 Dodge RAM trucks equipped with a 5.7 HEMI V8 engine delivers 439 RWHP and 444 RWTQ. Featuring a unique design with minimal components makes it possible to fit an Edelbrock supercharger under the stock hood.

05. Best 5.7 Hemi Intake Manifold Upgrade: Despite being a great engine, the 5.7 HEMI is notorious for being underpowered out of the box. It is reasonable to say given that the powerful 5.7L V8 does not even produce 400 horsepower. With a few bolt-on upgrades, the 345 HEMI provides a lot of benefits.

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motor hemi v8 5.7 supercharger