HO300-291 - HOLLEY INTAKE MANIFOLD SPLIT SINGLE PLANE CARB 4150 FITS GM LS3/L92

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 - 7.25" (0°carb flange angle)

˝ Port Size- 2.59" Height x 1.28" Wide

˝ Carburetor Flange - Standard 4150 for up to 1-3/4" diameter throttle bores

˝ As-Cast Runner Cross-Sectional Area - 4.5 in²at the runner entry tapered to 3.2 in²at the flange exit

Features:

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