This LS Race single-plane intake manifold is designed for high-performance and racing applications on 5.3 to 6.2+ liter LS engines, naturally aspirated or with power adders. The large-volume 4500 plenum and optimized runners deliver airflow for high-RPM engines with max power at 7,500-8,000+ RPM, and a two-piece split design provides easy access for porting and modification.
Specifications:
- Brand: Holley
- Category: Engine
- Engine: GM LS1/LS2/LS6
- Basic Operating RPM Range: 2500-7500
- Flange Style: 4500 Dominator/4500
- Manifold Type: Split Single Plane
- Port Style: Cathedral
- Material: Aluminum
- Finish: Black
- Fuel System Type: EFI
- Throttle Body Bore Diameter: 5 in
- Vacuum Ports: Yes
- Product Type: Intake Manifold
- Sub Category: Cylinder Block Components
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 300-294BK
Includes mounting bolts, washers, and O-ring cylinder head mounting flange gaskets for an OEM-style seal. Does not work with factory fuel rails — the included billet fuel rails are designed to accept Bosch-style EV-1 or Magneti Marelli Pico fuel injectors.
FAQ
What engines does this manifold fit?
GM LS1/LS2/LS6 engines with cathedral port cylinder heads, 5.3 to 6.2+ liter displacement.
What carb/throttle body flange does it use?
A 4500 Dominator-style flange for carburetors, EFI throttle bodies, or throttle body elbows.
What RPM range is this manifold designed for?
2,500-7,500 RPM.
Does it work with factory fuel rails?
No, it requires the included billet fuel rails; factory fuel rails aren't compatible.
What injectors are the fuel rails designed for?
Bosch-style EV-1 or Magneti Marelli Pico fuel injectors.
