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4L V8 1982 - 1985 Buick Century 260/4
The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard
2 V8 1997 - 2000 Dodge Ram 1500 ST 318/5
3 V8 2004 - 2006 Chevrolet Silverado 1500 LT 294/4
Holley Hi-Ram EFI Intake Manifold Kit - Big Block Chevy 300-963 ignition-cylinders 4L V8 1982 - 1985Hi Ram intake manifold with 105mm LS GenIV type throttle body flange type plenum top. A 10AN fuel rail kit is included. Holley Hi Ram EFI intake manifolds are now available for 1965 & later 396 502+ MKIV MKVI Big Block Chevy engines with standard intake flange rectangle port cylinder heads. Traditional Big Block Chevy engines can now also be fitted with the Holley Brand Hi Ram type EFI intake manifolds that have so well served GM LS & LT, Gen 3 Hemi,
