• raylar gen7r intake manifold
    Raylar GEN7R
    Intake Manifold
    No Compromise, Bolt On Replacement

    After years of research and development, the GEN7R intake manifold is now IN STOCK! Maximum horsepower and torque in an easy to install, 90MM / 102MM throttle body ready setup.

    GEN7R Intake Manifold >

  • 8.1L Vortec Supercharger
    Street Tuner Kit
    Make 8-12lbs Of Boost With Our 2.9L Whipple Supercharger!

    Turn your 8.1L Vortec into a 800+ horsepower monster with our 2.9L twin screw supercharger kit.

    2.9L Whipple Twin Screw Supercharger >

  • 8.1L manual vortec 8100 performance parts book
    Know Every 8.1L
    Performance Secret
    Detailed Specs, Drawings & DIY Performance Tips

    Turning factory engines to aftermarket 1000+ horsepower monsters, we cover the ins and outs of increasing horsepower and modifying torque for increased performance to suit your needs and application.

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  • 496 8.1L performance parts
    8.1L / 496cid
    Performance Parts
    Turn Your Stock 496 / 8.1L Into One Of These!

    Performance parts for Chevrolet GM GEN7 BBC Vortec 8100 / 8.1L / Mercruiser 496 MAG / 496 MAG HO / Volvo Penta 8.1Gi & 8.1GXi / Crusader Captain’s Choice 8.1 MPI & 8.1 HO MPI in marine, truck and motorhome applications.

    8.1L / 496cid Performance Engine Kits >

  • 8.1L 496 stroker kit
    Vortec 8100 / 496 MAG
    511cid Stroker Kit
    There’s No Replacement For Displacement

    Turn your Chevy / GM Vortec 8100 / 8.1L into a tire shredding monster with our fully forged stroker assemblies.

    On the water, our 511cid stroker kit is a perfect fit for Mercruiser 496 MAG applications looking for a forged bottom end replacement.

    Forged Stroker Kits >

  • fuel injection big block chevy
    Replace Your BBC
    Vortec 8.1L / 496cid
    Looking For Better Mileage & More Power From Your Big Block Chevy?

    Replace your old-school big block Chevy with a modern, GEN 7 Vortec 496. Raylar hot rod / muscle car performance parts packages allow you to make big horsepower and torque in either fuel injected or carbureted applications.

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Vortec 8100 / 8.1L Performance Parts

Get More Pulling Power & Better Fuel Economy

Our kits give you the horsepower, torque and sound you’ve been looking for. Raylar offers street performance kits for Chevy and GM trucks, motorhomes, hot rods and muscle cars with the Vortec 8.1L / 496.

Vortec 8100 Performance Packages

Mercuiser 496 MAG / 496 MAG HO
Performance Parts & Packages

Proven Marine Performance Packages

Go faster on the water! Raylar performance packages allow your 496 to produce massive amounts of power without sacrificing reliability. Whether your power boat is running boost or naturally aspirated, we have the correct performance parts for your application.

496 MAG Performance Parts

Performance Applications

l18 vortec 8.1l truck performance packages
Chevy / GM Trucks

Want tire shredding performance from your daily driver?

mercury marine 496 mag performance parts
Marine / Watercraft

Boosted? NA? We have the correct performance parts combination for your power boat.

muscle car BBC l18 swap hot rod 8.1l conversion
Hot Rods / Muscle Car

Building a BBC street machine? Our EFI kits blow the doors off LSX small blocks.

workhorse rv motorhome performance parts
Workhorse Motorhome

Get more pulling power and better economy from your workhorse chassis RV.

8.1L / L18 / Vortec 8100 Swap Info

Looking for information on what it takes to drop an 8.1L engine in your vehicle?

Vortec 8.1L Engine Swap Information

Performance Videos

All Videos

Magazine Articles

car craft 8.1L magazine article 8.1l engine swap into hot rod 69 corvette