Chevy GM LS1 Downdraft + FiTech Ultra EFI Fuel Injection System [Polished] improved throttle response and better

improved throttle response and better fuel economy

while increasing thermal conductivity

Speedmaster CNC ported cylinder heads are machined on dedicated 5-axis CNC machines to ensure accuracy and better flow

*Will not work on engines w/reverse flow heads as utilized on 1992-96 LT-1 Corvette

Due to the large-diameter 13 in

Chevy GM LS1 Downdraft + FiTech Ultra EFI Fuel Injection System [Polished] improved throttle response and betterDiscover 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.