Edelbrock ede1577

The Edelbrock Stage 1 Street supercharger system part #1577 for 2003–2006 GMT800 Silverado/Sierra 1500 and 2007 Sierra Classic boosts Gen III 4.8L, 5.3L and 6.0L outputs, with model‑specific gains (for example roughly 339–348 hp and 359–381 lb‑ft at the rear wheels depending on displacement). It uses an Eaton Gen VI 2300 TVS assembly, an integrated bypass valve, a compact efficient inlet and a high‑capacity air‑to‑water intercooler with a low‑temp heat exchanger. The system is 50‑state emissions legal with the intended tune.