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  1. Intro to the LS2, L76, and L77 · Help Center - Summit Racing

    The L76 and L77 used the same rectangle port heads as the LY6 and L96 and L92 and L9H.. What's the difference? The easiest way to tell the difference is to check the 8th digit of the VIN code. Follow this …

  2. Chevy L76 Truck Engine Specs · Help Center - Summit Racing

    Chevy L76 Truck Engine Specs LS Family: Gen. 4, 6.0L, Aluminum Block, Truck Engines

  3. Intro to the LS2, L76, LFA, and LZ1 · Help Center

    The L76 used the same rectangle port heads as the LY6 and L96 and L92 and L9H. What's the difference? The easiest way to tell the difference is to check the 8th digit of the VIN code. Follow this …

  4. Upgrading the LS2, L76, and L77 Engines · Help Center

    The L76, L98, and L77 heads have rectangle intake ports, like the LS3/L92 heads. Light weight, hollow stem intake valves from the LS3 drop right in for high rpm use.

  5. Chevy L76 Car Engine Specs · Help Center - Summit Racing

    Chevy L76 Car Engine Specs LS Family = Gen. 4, 6.0L, Aluminum Block, Car Engines ... **The Austrailian vehicles use a different format for Vehicle Identification Numbers (VIN). The 8th digit is …

  6. I know my VIN. Which LS engine do I have? · Help Center

    Identify Chevy LS Engines by VIN Chevrolet's 3rd and 4th generation small block engines are generally known by their RPO code. You can determine the RPO code if you have the Vehicle Identification …

  7. Upgrading the LS2, L76, LFA, and LZ1 Engines · Help Center

    The L76, LFA, and LZ1 are equipped with Active Fuel Management (AFM). It's good for gas mileage, but not high performance. If the valvetrain is in good condition, an AFM Disabler can turn the AFM off. …

  8. LS Engine Tech – Active Fuel Management (AFM) · Help Center

    Overview of the Chevy AFM System The purpose of Active Fuel Management (AFM) is to improve gas mileage. It is also known as Displacement on Demand (DOD) or cylinder deactivation. **The table …

  9. I don't know the VIN. Which LS engine do I have? · Help Center

    Identify Chevy LS Engines by Inspection Before you begin any project, you need to know the starting point. When it comes to Chevrolet's 3rd and 4th generation small blocks, there can be a lot of …

  10. L76 bored/stroked to 421 longterm build - LS1TECH

    Sep 18, 2017 · Generation IV Internal Engine - L76 bored/stroked to 421 longterm build - The 6.0 L76 in my G8 is making some ominous noises, sounds like it's knocking. I hate it but at least it gives me an …