The cylinder heads are great too! The LS2 used the same cathedral port heads as the LS6 . 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 link to Identify an LS Engine by VIN.

**The Austrailian vehicles use a different format for Vehicle Identification Numbers (VIN). The 8th digit is NOT the engine code in an Austrailian VIN code.**

On a stock engine, the following upgrades can improve performance and fuel economy: A Cold Air Intake Kit Headers An Aftermarket Exhaust A Computer Programmer Below are more upgrades that will improve the performance of the LS2, L76, L98, and L77 engines. Engine Block These engines share a 4.000 in. bore diameter. The cylinders can be bored to ...

Knowledge Base - Home SR-04901 Print LS Engine Tech – Active Fuel Management (AFM) Views: 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 below shows the engines that were originally equipped with AFM.**

Knowledge Base - Home SR-04891 Print I don't know the VIN. Which LS engine do I have? Views: 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 confusion. There are more than 40 variations of these engines.

The information below applies to vehicles with the original engine still installed. If you have a second-hand vehicle that doesn't match the info below, the engine may have been swapped out.Follow this link for help Identifying an LS Engine by Inspection.

Related Products:Camshafts & Valvetrain, Cylinder Heads, Engine Assemblies, Oiling Systems, Other Engines & Components, Pistons & Piston Rings, Valve Covers & Dress-Up Kits

The LY6 used Variable Valve Timing (VVT). This helped it make more Torque and Horsepower than the previous 6.0L engines. It was available in GM pickups until 2010. It was also available in vans, and SUVs until 2009.

This article applies to any Gen. 4, Chevy LS engine with the Variable Valve Timing (VVT) System. A VVT Delete Kit removes the VVT components and replaces them with standard parts. At a minimum, they include: A Gen. 4, non-VVT timing cover, A new, 4X, non-VVT upper timing gear, A new harmonic balancer bolt, and New camshaft bolts. Some kits will also include additional parts, such as: A new ...

Intro to the Ford Modular 4.6/5.4L 2V Engine Ford Modular 2-Valve V8 Motor Overview Ford 4.6 2-Valve Engine. The 4.6L Ford engine was first used in the 1991 Lincoln Town Car. It was also made available for trucks and vans starting in 1997. The PI or “Performance Improved” version was introduced in 1999 and ran virtually unchanged i...