COLLECTORS AUTO SUPPLY Inc - since 1992. Window Sweeps & Felt Kits.
Holley Performance 300-290 EFI Intake Manifold. WARNING CA Proposition 65: No. Maximum Performance Race Design With Hood Clearance Consideration. Lighter Than Other Split Race Intakes.Split Feature Making Porting Efforts Easy. 33 To 50 Percent The Price Of Other Split Race Intakes. Captured O-Ring Seals At Head Ports and Split. Billet Fuel Rails And Rail Mounting Hardware Included. 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. 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 in. (0° carb flange angle), Port Size- 2.59 in. Height x 1.28 in. Wide, Throttle Body Flange - Standard 4150 for up to 1-3/4 in. Diameter throttle bores, As-Cast Runner Cross-Sectional Area - 4.5 inA at the runner entry tapered to 3.2 inA at the flange exit. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
We're car nuts and love helping people with restoring their classics. We've been doing this for over 30 years and going strong. Finding the perfect part for your classic car can be difficult, and even frustrating.And let's be honest. What makes it worse is a general lack of customer love in the industry. That's why we're here, and that's why we're different. We're car people just like you, and we know what you need.
And if we don't already know it, we're listening. So, get in touch with us if you need help finding a part or have a question.