Chevy GM LS1 Downdraft + FiTech Ultra EFI Fuel Injection System [Black] these housings tubes are manufactured

these housings tubes are manufactured with

Use the stock Quadra-Jet carb or 500-650 cfm vacuum secondary carburetor

Speedmasterª EFI systems give you everything you need to add powerful and efficient fuel injection to your vehicle

Speedmaster gear drives are great for you folks who want better timing

These cast aluminum manifolds accept square-bore carburetors and are pressure tested to ensure maximum performance

Chevy GM LS1 Downdraft + FiTech Ultra EFI Fuel Injection System [Black] these housings tubes are manufacturedDiscover the zenith of fuel injection innovation with our enhanced Downdraft 8 Stack EFI Intake Manifold System, now impeccably paired with FiTech's sophisticated computer technology. This upgraded combination elevates the standard in electronic fuel injection, offering an unmatched solution for a wide spectrum of vehicles, from everyday use to high powered performance.