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Single Plane EFI Split-Design Race Intake Manifold- GM LS3/L92- Black Finish

SKU: 300-290BK

Availability: In stock

Handling Time: 30 Days


Holley Single Plane EFI Split-Design Race Intake Manifold- GM LS3/L92- Black Finish

EFI single plane split-design race intake manifold. Fits all GM LS Gen III or IV engines equipped with LS3/L92 cylinder heads

The new Holley Single-Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit GM LS Gen III engines with LS3/L92 heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI.
The LS Race single-plane intake manifold was designed for hi-performance/racing engine applications, 5.3 to 6.2+ liter displacement, and maximum engine speeds of 6000-7000 rpm, depending on the engine combination. This single-plane design provides optimal performance across the RPM spectrum while providing maximum performance up to 7000 rpm.
The Holley LS Race manifold incorporates a split feature, which allows disassembly of the intake for direct access to internal plenum and port surfaces, making custom porting and matching a snap. With shoulder bolt locators and O-ring seal, reassembly is simple and precise.

Technical Data:
A-B Height - 7.20" (0º carb flange angle)
Port Size- 2.59" Height x 1.28" Wide
Throttle Body Flange - Standard 4150 for up to 1-3/4" diameter throttle bores
As-Cast Runner Cross-Sectional Area - 4.5 in² at the runner entry tapered to 3.2 in² at the flange exit


  • Maximum performance race design with hood clearance consideration
  • Lighter than other split race intakes
  • Split feature making porting efforts easy!
  • 33 to 50% the price of other split race intakes
  • Captured O-ring seals at head ports and split
  • Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange
  • Billet Fuel Rails and rail mounting hardware included.

Installation Note:Two different length fuel rail bracket sets are included; the long brackets are for mounting the fuel rails at a height for Bosch style EV1 type fuel injectors. The short brackets are for mounting the fuel rails at a height for GM OE LS7 fuel injectors. When using the OE GM LS7 injector, the O-ring on the outlet (intake manifold) end of the injector must be changed to the O-ring supplied in the short bracket pack.


  • Barrels: 4
  • Brand: Holley
  • Color: Black
  • Construction: Cast
  • Emission Code: 3
  • Engine: GM LS3/L92
  • Finish: Black
  • Flange Style: 4150 Square Bore
  • Front Height: 7.32"
  • Fuel System Type: EFI
  • Manifold Type: Split Single Plane
  • Product Type: Manifold
  • Rear Height: 7.32"
  • RPM Power Band: 2500-7000
  • Warranty: Limited 90 Day