Description
Technical Data: ? As-Cast Runner Cross-Sectional Area - 4.5 in2 at the runner entry tapered to 3.2 in2 at the flange exit 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. ?
A-B Height - 7.20 inch (0 carb flange angle) 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.
? Throttle Body Flange - Standard 4150 for up to 1-3/4 inch diameter throttle bores ?
Port Size- 2.59 inch Height x 1.28 inch Wide 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.
Features and Benefits:
- Split feature making porting efforts easy! Lighter than other split race intakes Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange Captured O-ring seals at head ports and split 33 to 50 percent the price of other split race intakes Billet Fuel Rails and rail mounting hardware included
- Maximum performance race design with hood clearance consideration
Associated Comments:
- 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.
Details:
- Barrel Quantity: 4.0
- Basic Operating RPM Range: 3500-8000 RPM
- Cnc Ported: No
- Carburetor Flange: Square/4150
- Carburetor Quantity: 1.0
- Carburetor Studs Included: No
- Color: Silver
- Construction: Cast
- Cylinder Head Port Shape: Rectangle
- Deck Height: 9.24 Inch
- Egr Port: No
- Engine: Gm LS3/L92
- Flange Style: 4150 Square Bore
- Front Maximum Height: 7.32 Inch
- Fuel Injectors Included: No
- Fuel Rail(s) Included: No
- Fuel System Type: EFI
- Gasket Or Seal Included: No
- Grade Type: Performance
- Intake Port Gasket(s) Included: No
- Manifold Type: Split Single Plane
- Material: Aluminum
- Nitrous Bung(s) Included: No
- Plenum Finish: Natural
- Rear Maximum Height: 7.32 Inch
- Recommended Use: Forced Induction
- Removable Runners: No
- Removable Top/Lid: No
- Single Or Dual Plane Type: Single Plane
- Throttle Body Bore Diameter: 3.6
- Throttle Body Gasket Included: No
- Throttle Body Included: No
- Vacuum Ports: Yes
- Warranty: Manufacturer's Limited 90 Day Warranty