Haytalras 300-136 GM LS3 L92 Rectangle Port Mid-Rise Single Plane 4150 EFI Intake Manifold 6.0L 6.2L

300-136 EFI Single Plane Intake for LS3 / L92 Rectangle Port

A mid-rise, single-plane EFI intake manifold for GM LS engines with rectangle port heads (LS3, L92 and similar 6.0L / 6.2L). Cast aluminum with consistent wall thickness and strong flanges, about 11.5 lb, with a 4150-style throttle body flange. Broad torque curve, best from 2,500 to 7,000 RPM; good for LS swaps and mild turbo, centrifugal blower or nitrous builds.

• Single-plane, mid-rise design; 5.42 in. height
• 4150-style square-bore throttle body flange
• Multi-port EFI
• Operating range: 2,500–7,000 RPM

Engine and Vehicle Fitment

• LS3, L92 and other rectangle port 6.0L / 6.2L LS engines, standard deck
• 2008–2013 Corvette 6.2L; 2010–2015 Camaro 6.2L; 2014–2017 Chevy SS 6.2L; 2009 Pontiac G8 6.2L
• 2007–2008 Escalade, Yukon, Sierra 1500, 2008 Tahoe and H2 with the 6.2L
• LS swaps using a rectangle port engine

Full specifications are in the Specifications tab.

What's Included

• 1 × intake manifold
• Additional parts as shown in the product photos

Why Haytalras

• Built in our own factory. We cast and CNC-machine our intake manifolds in-house. The same factory has produced intake manifolds for Holley, TSP and Professional Products.
• Checked before it ships. Every manifold goes through air-tightness, dimensional and visual inspection.
• Ships from the US. Free shipping from our California and Georgia warehouses, out the door within 24 hours, usually delivered in 3–7 days.
• Backed by us. 30-day free returns and a 1-year warranty on casting defects.

Frequently Asked Questions

EFI or carbureted?

This is the EFI version. Our EFI vs carbureted LS intake guide explains the difference; the carbureted twin is the 300-131.

Not sure it fits?

Email haytalras@gmail.com with your vehicle, engine and cylinder head casting number and we'll confirm before you order.