The Holley EFI Hi-Ram intake for the GM direct-injected Gen V 6.2L LT1 uses a modular design for easy disassembly, custom porting, multiple tops, or custom induction systems, with a large runner-to-plenum radius and an optimized taper for a wide range of engine configurations.
Specifications:
- Engine: GM Gen V LT1
- Basic Operating RPM Range: 3,500-8,000+
- Cylinder Head Port Shape: Rectangle
- Deck Height: 9.24"
- Manifold Type: Hi-Ram
- Finish: Natural
- Construction: Cast Aluminum
- Type of Component: Lower Manifold
- Vacuum Ports: Yes
- Height at Plenum Flange: 9.44"
- Overall Height: 13.34" (w/ EFI top - 95mm or 105mm)
- Top Options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or blank flange
- Part Number: 300-237
This version omits port EFI provisions and fuel rails; plenum top ordered separately.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What's the difference between 300-236 and 300-237?
The 300-237 is the LT1 Hi-Ram lower manifold without port EFI provisions or fuel rails, for builders not adding port injectors in the runners.
Does it include a plenum top?
No, order a plenum top separately from the Holley Hi-Ram plenum top options.
What RPM range is this built for?
3,500-8,000+ RPM.
