This dual-plane carbureted intake manifold makes it easy to bolt a carburetor onto a GM LS3/L92 style engine. The dual-plane design delivers strong low-end torque while still pulling cleanly to 6,500 RPM, and O-ring cylinder head mounting flange gaskets provide an OEM-style seal for a straightforward installation.
Specifications:
- Engine: GM LS3/L92
- Manifold Type: Dual Plane
- Flange Style: 4150 Square Bore
- Fuel System Type: Carbureted
- Basic Operating RPM Range: 1500-6500
- Material: Aluminum
- Plenum Finish: Natural
- Port Size: 2.454 inch height x 1.09 inch wide
- Height (front): 5.07 inch
- Height (rear): 6.14 inch
- Weight: 14.56 lbs
- Throttle Body Bore Diameter: 3.6 inch
- Vacuum Ports: Yes
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 300-129
Fits GM LS Gen III/IV engines equipped with LS3/L92 style rectangular-port cylinder heads and includes mounting bolts and washers.
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 cylinder heads does this intake fit?
It's designed for GM LS Gen III/IV engines with LS3/L92 style rectangular-port cylinder heads.
What is the RPM power band for this manifold?
It delivers strong low-end torque and pulls cleanly through 6,500 RPM.
Is this manifold legal for street use?
No. It's legal for sale and use only on Racing Use Only vehicles that are not registered or operated on the street, and it is against the law to install it on an emissions-controlled vehicle.
What does the O-ring mounting flange gasket provide?
It provides an OEM-style seal at the cylinder head mounting flange for a clean, reliable installation.
How much does this manifold weigh?
It weighs 14.56 lbs.
