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Adjustable PCV Valve Stops Leaks
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Automotive and Marine Covers
Brakes->
Carburetor Modifications
Carburetors->
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->
  |_ Dodge SRT4 Turbo->
  |_ Engine Components->
  |_ Engine Girdles->
  |_ HEMI 5.7L, 6.1L, 6.4L Components->
    |_ 5.7 / 6.1L Hemi Gasket Sets->
    |_ 5.7 / 6.1 Hemi Alternator Fan
    |_ 5.7 / 6.1 Hemi Roller Rockers
    |_ 5.7 / 6.1 HEMI Turbo Kits
    |_ 5.7 / 6.1L Billet Accessories
    |_ 5.7 / 6.1L Hemi Axle Hub Kit
    |_ 5.7 / 6.1L Hemi Belts
    |_ 5.7 / 6.1L Hemi Bolts and Studs
    |_ 5.7 / 6.1L Hemi Camshafts
    |_ 5.7 / 6.1L Hemi Cold Air Kits
    |_ 5.7 / 6.1L Hemi Connecting Rods
    |_ 5.7 / 6.1L Hemi Converters->
    |_ 5.7 / 6.1L Hemi Crank Dampers
    |_ 5.7 / 6.1L Hemi Crankshafts
    |_ 5.7 / 6.1L HEMI Engine Bearings
    |_ 5.7 / 6.1L Hemi Exhaust
    |_ 5.7 / 6.1L Hemi Fuel Injectors
    |_ 5.7 / 6.1L Hemi Fuel Rails
    |_ 5.7 / 6.1L Hemi Intake Manifolds
    |_ 5.7 / 6.1L Hemi Nitrous Systems
    |_ 5.7 / 6.1L HEMI Oil Pans->
    |_ 5.7 / 6.1L Hemi Oiling System
    |_ 5.7 / 6.1L Hemi Piston Rings
    |_ 5.7 / 6.1L Hemi Pistons
    |_ 5.7 / 6.1L Hemi Superchargers
    |_ 5.7 / 6.1L Hemi Suspension
    |_ 5.7 / 6.1L HEMI Throttle Bodies
    |_ 5.7 / 6.1L Hemi Timing Sets
    |_ 5.7 / 6.1L Hemi Transmissions
    |_ 5.7 / 6.1L HEMI Tuning
    |_ 5.7 / 6.1L Hemi Valvetrain
    |_ 5.7 6.1 6.4 Hemi Cylinder Heads
    |_ 5.7L Hemi Water Pump
    |_ 6.1L HEMI Aluminum Blocks
    |_ 6.1L Hemi Lifters
    |_ Carbon Fiber
    |_ Custom 5.7 / 6.1L Chipkiller
    |_ Custom Hemi Billet Main Caps
    |_ Custom Hemi Floor Mats
    |_ Gen 3 Hemi Oil Squirter Plug
    |_ Hemi 5.7 / 6.1L Power Packages
    |_ Hemi 5.7 and 6.1L Valve Covers
    |_ HEMI Drive Shaft Loop
    |_ Hemi Serpentine Belt Conversions
  |_ 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

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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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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Chris B.

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

Darren B.

John,Racing flat out on the 440/533 engine over 1 season & 65 passes at 8.97@150mph 1.27 60' getting great results!!Engine is GREAT!Thanks mate!
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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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Kayden G.

Kayden G.

Well your service is amazing. Never had better from any company I've ordered from! Kayden
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Ricky H.

Ricky H.

Thanks for everything John. The headers are great !
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Ricky R.

Ricky R.

1937 Chevy Legends Race Car, Thanks for everything!
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Alan P.

First off, I just have to say that I have never came across a more stand-up guy that takes his time to connect with his customers and have the...
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Phil S.

Phil S.

Great job creating this Dakota R/T Ground Affects Kit. Phil
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Henry T.

Henry T.

HEY! Everything is installed and car runs AWESOME! Thanks for everything, Thanks again. Henry 2000 Dodge Viper R/T 10
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Clay B.

Clay B.

Thanks for everything !
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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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Bill S.

Bill S.

Thanks John, 426 Hemi stroker 588 https://www.youtube.com/watch?v=1dJdt0ZFzjU
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Billy W.

Billy W.

Dakota R/T 408
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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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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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Troy K.

Troy K.

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

Wow! Thank you for that quick and informative response. Must be why you are always recommended. Shaine
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Robert A.

Dude you are badass, no one and I mean one has made me feel better about getting work done then you and I appreciate that. thanks a million
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Robert S.

Robert S.

426 Hemi Cuda
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Robert S.

Robert S.

Great parts and service! Robert
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Brian C.

Brian C.

I have never had any problems with John on any transaction. One of the few vendors I have never had a single problem with. Including paying overnight...
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Gary H.

Gary H.

John, Thanks a lot !
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Michael W.

Michael W.

After getting all the compatible stuff shes a beast! Michael
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6.1L Hemi Cylinder Head

Our complete professionally ported Dodge 6.1L Hemi cylinder heads allow you to make big gains. With over 30 years cylinder head porting experiance, we will race port, flow your heads on a Superflo bench, competition multi angle valve job, upgrade to stainless Manley or Ferrea valves, increase valve diameters, install new valve seats when required, use performance valve springs, moly or titanium retainers, new stem seals. Includes disassembly, cleaning, reconditioning and assembly. Contact Southeast Performance for upgraded 6.1 Hemi packages including matching custom grind camshaft and larger throttle body.




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