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| Brand | EVIL ENERGY |
|---|---|
| Part Number | 300136 / 300-136 |
| Product Name | LS3 L92 L99 L76 EFI Intake Manifold with Fuel Rails |
| Application Focus | LS intake manifold for compatible rectangular port LS3, L92, L99, and L76 EFI performance builds |
| Intake Category | LS EFI intake manifold / rectangular port intake manifold / intake manifold with fuel rails |
| Manifold Type | Single Plane / Hybrid Performance Intake Manifold |
| Fuel System Compatibility | EFI |
| Port Compatibility | Designed for LS3/L92/L99/L76 style rectangular port cylinder heads. Not intended for LS1, LS2, or LS6 cathedral port cylinder heads unless the engine has been converted to compatible rectangular port heads. |
| EFI Setup Note | Fuel rails are included. Confirm injector length, fuel line fittings, regulator setup, MAP/IAT sensor placement, throttle body compatibility, ECU control, and tuning requirements before installation. |
| Intake Style | Original-style intake / modified elbow and performance LS EFI layout |
| RPM Range | Peak torque: approx. 3,500 - 5,500 RPM; peak horsepower: approx. 6,000 - 7,200 RPM |
| Material | Cast Aluminum |
| Color / Variant | Silver |
| Compatible Engine Family | GM LS Gen III engines equipped with LS3/L92/L99/L76 style rectangular port cylinder heads |
| Compatible Engines | Small-Block Gen IV LS3 376 cid (6.2L); L99 376 cid (6.2L); L92 376 cid (6.2L); L76 364 cid (6.0L) |
| Fitment Note | This LS engine intake manifold is intended for compatible rectangular port LS applications and should not be assumed to fit cathedral port LS1/LS2/LS6 heads, Gen V LT engines, Small Block Chevy, Big Block Chevy, or unrelated engine families. |
| Compatible Vehicles | Chevrolet Corvette C6 Base (2008-2013, LS3 applications) Chevrolet Camaro SS Fifth Gen Manual (2010-2015, LS3 applications) Pontiac G8 GXP (2009, LS3 applications) Holden HSV E3 / Gen-F Performance Models (2013-2017, LS3 applications) Chevrolet Camaro SS Fifth Gen Automatic (2010-2015, L99 applications) Cadillac Escalade / Escalade ESV GMT900 (2007-2014, L92 applications) GMC Yukon Denali / Denali XL (2007-2014, L92 applications) Chevrolet Suburban LTZ (2007-2014, L92 applications) Chevrolet Silverado 1500 High-End Trims (2007-2009, L92 applications) GMC Sierra 1500 High-End Trims (2007-2009, L92 applications) Holden VE / VF Commodore SS (2008-2017, L76 applications) Holden WM / WN Caprice (L76 applications) Chevrolet Caprice PPV (L76 applications) Pontiac G8 GT (2008-2009, select L76 applications) Chevrolet SSR Final-Year Applications (2005-2006, select L76 applications) |
| Dimensions | 17.15 in (L) x 13.33 in (W) x 4.83 in (H) / 435.55 mm x 338.6 mm x 122.57 mm |
| Best Use | Performance street cars, muscle cars, drift builds, track-day LS platforms, and EFI rectangular port LS upgrades |

If your rectangular port LS build needs a cleaner EFI intake setup, included fuel rails, or more airflow support than an older factory-style manifold can provide, the EVIL ENERGY LS EFI intake manifold gives builders a cast aluminum option for compatible LS3, L92, L99, and L76 engines. Its approximate torque and horsepower ranges are aimed at performance street cars, muscle cars, drift builds, track-day platforms, and LS projects where the camshaft, heads, exhaust, fuel system, and tuning are matched.
This LS intake manifold is designed for compatible rectangular port cylinder heads and EFI fuel delivery. It is a practical option for builders replacing an older LS3 intake manifold, planning an intake manifold with fuel rails upgrade, or choosing a rectangular port intake manifold for a performance-focused LS engine setup.
Important: Always verify cylinder head port shape, intake bolt pattern, injector length, fuel rail fitting size, throttle body setup, MAP/IAT sensor placement, hood clearance, accessory clearance, and ECU tuning requirements before ordering. This manifold is intended for LS3/L92/L99/L76 style rectangular port heads and should not be assumed to fit LS1, LS2, or LS6 cathedral port heads.

This LS engine intake manifold is designed for GM LS engines equipped with LS3, L92, L99, or L76 style rectangular port cylinder heads. Common LS3 applications include Chevrolet Corvette C6 Base models, manual fifth-generation Camaro SS models, Pontiac G8 GXP, and Holden HSV E3 / Gen-F performance platforms. L99 applications include automatic fifth-generation Camaro SS models. L92 applications include Cadillac Escalade, GMC Yukon Denali, Chevrolet Suburban LTZ, Silverado 1500, and Sierra 1500 high-end trims. L76 applications include Holden VE / VF Commodore SS, Holden Caprice, Chevrolet Caprice PPV, and Pontiac G8 GT platforms.
Vehicle names are provided as reference examples only. Engine swaps, cylinder head changes, cathedral port versus rectangular port differences, injector selection, throttle body setup, accessory clearance, hood clearance, and calibration requirements can affect final fitment. Before installation, confirm that your engine, cylinder heads, and EFI setup match this LS EFI intake manifold.

| EVIL ENERGY Intake Manifold, Part No. 300136 / 300-136 x 1 | One EVIL ENERGY LS3/L92 EFI intake manifold for compatible GM rectangular port LS engines. |
|---|---|
| EFI Fuel Rails x 1 Set | Includes matching fuel rails for the LS EFI intake manifold setup. Confirm injector, fuel line, fitting, regulator, and fuel pressure compatibility with your build before final installation. |
| Installation Hardware Kit x 1 | Includes mounting hardware and installation accessories. Confirm the hardware against your engine, cylinder heads, intake gaskets, EFI system, sensors, and accessory setup before final installation. |

This LS rectangular port EFI intake manifold is designed for builders who want an EFI-ready intake option for compatible LS3, L92, L99, and L76 cylinder head combinations. For many LS performance builds, port shape, injector compatibility, fuel rail setup, throttle body selection, MAP/IAT sensor location, ECU control, exhaust, and gearing all matter when choosing the right manifold.
For Corvette, Camaro SS, Escalade, Yukon Denali, Suburban, G8, Holden, Caprice, or LS-swapped projects using compatible LS3/L92/L99/L76 rectangular port heads, this EVIL ENERGY LS EFI intake manifold provides a practical intake solution for street performance, drift, track-day, and performance EFI applications. Final results depend on the full engine combination, injector selection, fuel system, camshaft, exhaust, ignition timing, ECU tuning, and installation quality.
| Policy | Details |
|---|---|
| Cancellation Policy | Orders can be canceled within 48 hours of placement. Refund processed in 3-5 business days. |
| Returns Policy | Returns accepted within 180 days. Full refund within 90 days; 15% fee for 90-180 days. |
| Non-Returnable Items | Only regular-priced items are eligible for refunds; sale items are non-refundable. |
| Refund Processing | If no refund received, check your bank/credit card. For ongoing issues, contact support@ievilenergy.com. |
Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.
EVIL ENERGY reserves the right to interpret, modify, or terminate this policy in accordance with applicable laws and regulations.
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