![]() ![]() Intake modification is essential if you are considering adding additional cubic inches to your 8.1L engine. Intake manifold modification will show gains throughout the low to midrange RPM band. Intake manifold modification does not replace the GEN7R manifold but does offer about 70% as much airflow. We remove the stock plenum blockages inside the manifold to reduce restriction and free up horsepower and smooth the individual intake runners. This intake modification will increase airflow to your big block vortec engine and still retain stock looks and passes emissions. IF you would ever need to flycut pistons for Twisted Wedge then it will be somewhat challenging as their valve. ALWAYS check piston to valve clearance when you build a non-stock setup despite what I or anyone says. Vortec 8.1L Intake Manifold Modification Intake Manifold Modification - $950įor big block 8.1 liter engines not requiring maximum high-RPM airflow, we can modify your stock 496 / 8.1 liter intake manifold. Twisted Wedge websites says you can run up to 0.542 lift and 224 duration 0.050 without clearance problems with stock pistons. ![]() In the image above, you can see the additional valve relief clearance which has been built into our pistons for our high-lift series of camshafts. Our high-lift kits come with fully forged components, ensuring maximum reliability and performance. We routinely see engines with cracked, chipped and even shattered pistons which result in catastrophic engine damage. The stock Vortec 8.1L cast pistons are not designed to withstand the forces of extreme endurance use. Stroker Kit Overview Vortec 8100 / 8.1L 496cid Pistons > High Strength Main / Rods / Cam Bearings Kit.> High Strength Main / Rods Bearings Kit.4 3/8 Standard Stroke Forged Flycut Pistons.Piston prices may vary depending on application. These pistons are capable of horsepower levels of over 800 HP without any fear of mechanical damage. These new pistons will allow our customers to rebuild and upgrade the strength of their 496-8.1 engines. What this means is that the valve stem is that. ![]() You will notice that there are aftermarket head that are called 13 degree, 18 degree etc. Our new forged pistons are available in standard bore. To get the proper flycut angle will require knowing what the angle is in relation to the deck of the piston and the valve itself. Raylar’s proprietary alloys will allow this piston to run tighter skirt to cylinder wall clearances to help eliminate piston slap noise while providing long life and extra strength. These forged pistons incorporate a special hard anodizing and skirt coating system that will allow these pistons to provide even more durability and reduce friction. This is especially important in high horsepower, high-RPM or supercharged applications. Replace your weak, cast factory pistons with Raylar’s proprietary forged piston and ring packages for the Vortec 8100 8.1Liter 496. ![]()
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