The Holley GM LS3/L92 modular Hi-Ram lower manifold is a cost-effective alternative to fabricated sheet metal for high-performance applications where induction system height isn't limited. This carbureted base is designed to be modular, accepting a wide range of carbureted and EFI tops, and is intended for Racing, Performance, and Street Rodder applications where hood restrictions aren't a factor.
Specifications:
- Basic Operating RPM Range: 3,500-8,000
- Engine: GM LS3/L92
- Fuel System Type: Carbureted
- Manifold Type: Hi-Ram (Lower/Base only)
- Finish: Natural
- Material: Aluminum
- Runner Length: 6.50", as-cast, tapered 4.25" to 2.77 in² cross-section
- Port Size: 2.49" height x 1.21" wide
- Mounting Flange: Standard LS3 molded O-ring
- Part Number: 300-213
This carbureted base is intended for racing, performance, and street rodder applications where hood clearance isn't a consideration. A plenum-top-mounting fabrication flange is available for custom top setups.
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
Is the Holley 300-213 street legal?
This part is legal for sale and use on Racing Use Only Vehicles only — it may not be installed on an emissions-controlled street vehicle.
What engine does the 300-213 fit?
The GM LS3/L92 engine.
Does the 300-213 include the plenum top?
No, this is the carbureted lower manifold base only; a plenum-top-mounting fabrication flange is available for custom tops.
