Holley- 300-291BK Single Plane Split Design Race Intake Manifold for GM LS3/L92 Black

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Carbureted single plane split-design race intake manifold. Fits all GM LS Gen III or IV engines equipped with LS3/L92 style cylinder heads The new Holley Single-Plane Race intake m anifold 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 in² at the runner entry tapered to 3.2 in² at 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 Black Finish Barrels 4 Brand Holley Color Black Construction Cast Emission Code 3 Engine GM LS3/L92 Finish Black Flange Style 4150 Square Bore Front Height 7.25 inch Fuel System Type Carb Manifold Type Split Single Plane Product Type Intake Manifold Rear Height 7.25 inch Recommended Use Forced Induction RPM Power Band 2500-7000 RPM Warranty Limited 90 Day UPC 090127065723 Part Number 300-291BK Show more