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A New Product->
Adjustable PCV Valve Stops Leaks
Air Conditioning Custom Kits->
Automotive and Marine Covers
Brakes->
Carburetor Modifications
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Chrome Accessories->
Chute Kits->
Clutches->
Cold Air Kits->
Custom Hoods->
Custom Parts Development->
Cylinder Head Porting->
Electric Cooling Fans->
Electronics and Delay Boxes->
Engine Blocks
Engine Parts->
  |_ Camshaft Thrust Buttons->
  |_ Camshafts->
  |_ Cylinder Heads->
    |_ Brodix
    |_ Dart
    |_ Edelbrock
    |_ EQ Cylinder Heads
    |_ Ford Racing
    |_ GM Performance
    |_ Holley
    |_ Indy Cylinder Head
    |_ JM Striker Cylinder Heads
    |_ Koffel's Place
    |_ Mopar Performance
    |_ Pro-Filer Cylinder Heads
    |_ Sidewinder Mopar Cylinder Heads
    |_ Stage V Cylinder Heads
    |_ Trick Flow Cylinder Heads
    |_ World
  |_ Dodge SRT4 Turbo->
  |_ Engine Components->
  |_ Engine Girdles->
  |_ HEMI 5.7L, 6.1L, 6.4L Components->
  |_ Intake Manifolds->
Engine Swap Kits
Engines->
Exhaust Components->
Exterior Vehicle Components->
Fasteners->
Fire Equipment->
Floor Mats->
Fuel Injection Systems
Fuel System Components->
Gaskets->
Gauges->
Gear Venders Overdrive Units
Ignition Components->
Lift Kits->
Lowering Kits->
Nitrous Kits->
Race Car Bodies->
Race Wear and Accessories->
Radiators and Components->
Rear End->
Roll Cages and Accessories->
Seats and Custom Interiors->
Shocks->
Spark Plugs->
Striker Viper heads Return
SuperChargers->
Suspension Components->
Tech Help
Throttle Bodies->
Tires->
Traction Components->
Transmission Components->
Tuning and Controllers->
Turbocharging->
Valvetrain Components->
Viper
Water Pumps->
Wheels->
Wideband Monitoring Systems->
Wiring harness and Accessories->

Customers

Michael W.

Michael W.

After getting all the compatible stuff shes a beast! Michael
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Brian A.

Brian A.

The 408 engine runs strong, put on dyno 405hp with 415tq N/A not shabby.. also was on 22" wheels with those numbers est. 500-525 @ crank. Thanks so...
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Harold R.

John, Thanks for the great customer service! Harold
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Ken L.

John, Thanks for all your help. I wish I had known about you before I ordered the rest of my stuff! Thanks, Ken
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David P.

David P.

Thanks for the brake lines !
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Daryl S.

Your 408 runs like a dream. I think we are well over the 400hp side, a new 300hp mustang could not overcome, it is a beast. I am very happy with the...
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Don S.

John, I can't emphasize this enough, but without the help you're getting me I could not have afforded my dream engine! I literally have cringed when...
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Benny C.

Benny C.

Thanks for the Great Mopar Service !
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Jason B.

Thanks John.. you have been awesome to work with and I am REALLY looking forward to driving my SRT-10 again :) Jason
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Toby W.

John, Thanks again so much. You're truly awesome.
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Ryan

bought numerous things and all transactions went very smooth. Responded to emails within a day or less. Ryan
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Vincent G.

Thanks for all, Your shop is very highly recommended by a lot of Dakota/Durango owners up here in Canada.
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Robert S.

Robert S.

Great parts and service! Robert
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Josh F.

I've bought parts and dealt with vendors in my job every day for the last 15 years. I have never dealt with a vendor as helpful and punctual as you...
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Ricky R.

Ricky R.

1937 Chevy Legends Race Car, Thanks for everything!
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Ricky J.

Thanks for all the info, you have been a great help and a credit to your company.
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Steve F.

Thank You for all your help and hookups with the parts - sounds like a lot of people appreciate it, I'm one of those people. - Steve
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Steve B.

Steve B.

Thanks for the help with my 426 stroker.
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Ian A.

Ian A.

I wanted to thank you for all your help and support, for being so patient and for being a good, honest person and especially so professional....
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Mike M.

John's very honest, something that's hard to find these days. This means he'll tell you the truth and you may not want to hear it. LOL. The best...
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Matt C.

Thanks again John, someone who’s willing to help and not just sell parts. So, looks like you’ll be listed on my referrals. Keep in touch. Thanks...
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Buyer

Super guy to deal with! GREAT SERVICE!! GREAT PRICE!!
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William K.

William K.

Well your service is amazing if you want my opinion. Never had better from any company I've ordered from. William K.
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Troy K.

Troy K.

Thanks for all your great help with my Viper.
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Rob D.

John is a real awesome guy. i couldn't thank u enough for all the help over 7-8 years.
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World Products

This is the cylinder head that highly respected drag racers like Scotty Richardson employ to win NHRA National event titles and literally hundreds of thousands of dollars in high stakes ET Bracket Races. Merlin III is a true high performance head, capable of supporting in excess of 800 HP out of the box. Take your pick between 310cc or 350cc intake runners. Assemblies include premium quality Manley RaceMaster or Severe Duty valves.

World Products offers heads in both aluminum and cast iron. For street engines, We recommend cast iron heads over aluminum. "Iron is better where weight or looks are not a factor because it retains heat better than aluminum and keeps the heat in the combustion chamber, which is where you want it. Cast iron heads will typically give you about 10 to 15 more horsepower than an identical set of aluminum heads on a street engine. As for the weight difference, a pair of cast iron small block Chevy heads weighs about 30 lbs. more than a set of aluminum heads. On a big block Chevy, the weight difference is about 85 lbs., which doesn't make much difference on a crew cab truck or RV, but does in a race car. For racing, you want the lighter aluminum heads."





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