• 496 supercharger performance parts
    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 >

  • car craft an avalanche of torque 8.1L raylar 540 stroker kit article
    "An Avalanche
    Of Torque" - Car Craft
    Check Out The 540cid Stroker Build In Car Craft Magazine!

    Car Craft magazine makes big horsepower and torque gains with our stage 1 Truck / SUV 540 stroker engine. At the crank, the 540cid Avalanche made 521hp / 627ft-lbs with smog legal headers and stock exhaust!

    Read The Whole Article Here! >

  • 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 >

  • mercury mercruiser 496 mag marine performance parts
    496 MAG / 496 MAG HO
    Performance Packages
    More Power From Your Mercruiser

    Increase the output of your Mercury Racing Mercruiser 496 MAG or 496 MAG HO engine by installing one of our industry proven performance packages. With naturally aspirated packages offering up to 607 horsepower / 638 ft-lbs of torque and supercharged packages up to 804 horsepower / 824 ft-lbs of torque, we’re sure you’ll find the right package for your powerboat.

    Mercruiser Performance Kits >

  • vortec 8100 8.1l truck performance parts
    Vortec 8100 / 8.1L
    Performance Parts
    Better Pulling Power, Economy & Performance

    The Chevy / GM Vortec 8100 8.1L engine makes incredible power when equipped with our CNC aluminum cylinder heads and camshaft kits. Click on the link below and get the pulling power you’ve always wanted from your big block Chevrolet.

    Chevy / GM Truck Performance 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.

    Hot Rod / Muscle Car Performance Kits >

  • marine performance kit
    Marine Performance Kits
    525HO / 600HO
    Enough Power For Any Naturally Aspirated Application

    Looking for our signature high output engine line? We’ve made all of our performance parts available in our marine engine packages so you can build your own!

    Marine Engine Kits >

  • 632 cubic inch big block chevy engine
    HO750 - 632cid BBC
    Raylar's Godzilla Rat
    765hp / 819ft-lbs - Naturally Aspirated

    Looking for the ultimate big block chevy engine for your hot rod, street rod or pro-touring vehicle? It doesn't get any bigger than this. Our HO750 uses a one-off billet aluminum stack injection manifold, forged rotating assembly and CNC-extreme cylinder heads.

    Contact Us For More Information >

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