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Adjustable PCV Valve Stops Leaks
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Electronics and Delay Boxes->
Engine Blocks
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Engine Swap Kits
Engines->
Exhaust Components->
Exterior Vehicle Components->
Fasteners->
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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->
  |_ Guideplates->
  |_ Mopar Rocker Shaft Shims
  |_ Mopar W2 Rocker
  |_ Retainers->
  |_ Rev Kits->
  |_ Rocker Arms->
  |_ Seals->
  |_ Stud Girdle Kits->
  |_ Valve Covers->
  |_ Valve Springs->
    |_ Brodix Valve Springs
    |_ Comp Cams Springs
    |_ Crane Cams Springs
    |_ Crower Springs
    |_ Dart Valve Springs
    |_ Edelbrock Springs
    |_ Eibach Springs
    |_ Ferrea Valve Springs
    |_ Ford Racing Valve Springs
    |_ GM Performance Valve Springs
    |_ Isky Springs
    |_ K-Motion Valve Springs
    |_ Lunati Valve Springs
    |_ Manley Valve Springs
    |_ Mopar Performance Valve Springs
    |_ Pioneer Valve Springs
    |_ Sealed Power Springs
    |_ World Valve Springs
  |_ Valves->
Viper
Water Pumps->
Wheels->
Wideband Monitoring Systems->
Wiring harness and Accessories->

Customers

Alexander F.

Alexander F.

Hey John! Roller Rockers are still in and have been great. I get almost 18mpg highway! I seriously appreciate all your help.
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Kris L.

John, Sitting in the car with a big smile on my face. Thanks for the quality brand products and the great price. Cheers Kris
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Clay B.

Clay B.

Thanks for everything !
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Hannu O.

Hannu O.

thank you very much from Finland!
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Bruce P.

Bruce P.

John, you have been so prompt and helpful. Take care my friend and thanks again. I'll be back. Bruce
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James G.

James G.

5.80 in 1/4 mile @ 244 mph & 3.76 @ 197 in the 1/8 mile
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Ricky H.

Ricky H.

Thanks for everything John. The headers are great !
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Colton H.

Colton H.

"Johns the man, bought a 410 package from him years ago after I got back from overseas. The caveat I gave John was that it had to pass Californian...
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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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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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Derek B.

Derek B.

Great Personalized service. Derek
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Andrew R.

Andrew R.

I am very pleased with the quality of the magnum deep pan, and the best part is that it really is not much deeper than the stock pan so I dont have...
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Dan F.

Dan F.

John, The truck is not done but i drive it daily and it runs good now. Eventually id like to do the rear brakes! Thanks
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David P.

David P.

Thanks for the brake lines !
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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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Brian R.

John!! Got my Viper back together, dyno tuned. Super happy with the results of your work!! Gained 112 RWHP and 107RWTQ!!!!! More at the crank. Sounds...
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Craig W.

Craig W.

Thanks John, So far 8 races and 8 top Five!!
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Tom R.

John--the 408 engine you built for me is outstanding. Feel free to give him my cell number and I'll happily give you a strong reference. Thank you...
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Steven

Southeast Performance and John Mercedes have been "OUTSTANDING" to do business with. I couldn't be happier.
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Gary H.

Gary H.

John, Thanks a lot !
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Robert M.

John, Thank you for all you have done, From your previous email responses, you seem to be old school, a man of his word. Thanks again John for...
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Doug B.

Doug B.

My experience with Southeast Performance and John has been amazing. My Viper has gained another 200hp and drives fabulous. Thanks for everything!
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Kyle M.

Kyle M.

John, I am very pleased with the brake conversion. The kit was very easy to install and I didn't have any problems and look very good as...
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Chris B.

Chris B. won the late model feature easily Texas Motor Speedway.
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William K.

You do outstanding work man. My whole crew is ready to see your work in action ;-)
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World Performance Valve Springs

Valve springs are one of the most critical and overlooked components in your engine. They must be matched to your cam in order for the engine to reach its full potential. It does absolutely no good to install a cam that will rpm to 8,000 if you do not have the correct springs. Use only the valve springs that will give the recommended spring pressure with the valve both on the seat and at maximum lift. These World Products replacement valve springs are offered in single and dual styles to meet their cam requirements.



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