Holley 300-127 Mid-Rise Intake - GM LS1/LS2/LS6 w/ 105mm Top

The Holley 300-127 Mid-Rise Intake - GM LS1/LS2/LS6 w/ 105mm Top is a modular EFI intake manifold designed for GM LS1, LS2, and LS6 cathedral port engines. It features a compact 10.44” height ideal for street and street/strip applications, delivering strong mid-range torque and top-end power for naturally aspirated or forced induction setups.

Key Features

Optimized for performance up to 6500 RPM with a broad powerband from 1500-6500 RPM
Modular design combining dual-plane layout with a 105mm EFI plenum top for balanced mid-range torque and top-end power
Cast aluminum construction for durability and heat resistance
Compatible with supercharged and turbocharged engines
Plenum base adapter accepts Holley LS Hi-Ram plenum tops for custom induction setups
Designed for GM LS Gen III/IV engines with LS1/LS2/LS6 cathedral port cylinder heads

Fitment

GM LS1, LS2, and LS6 engines with cathedral port cylinder heads
Street and performance street/strip applications, including forced induction setups

Note: ECU recalibration may be required when using this intake with OE ECUs. Some vehicle applications may require an aftermarket hood due to manifold height. Designed for use with Bosch EV-1 or Magneti Marelli Pico fuel injectors; OE LS injectors may not fit properly.