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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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David A.

David A.

Thanks for everything, David
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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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Pete L.

Pete L.

Mopar RB 440 Aluminum block with a Procharger. Makes 1600 HP!!
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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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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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Kayden G.

Kayden G.

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

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

James G.

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

Gary H.

John, Thanks a lot !
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Billy W.

Dakota R/T 408
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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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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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Ricky J.

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

Dodge SRT-10 Viper
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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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Benny C.

Thanks for the Great Mopar Service !
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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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Craig W.

Craig W.

Thanks John, So far 8 races and 8 top Five!!
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Bill S.

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

You’ve got a big fan in me. Oh yeah, the car is awesome. Runs like a raped ape. So thanks a lot !
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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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Scot C.

Scot C.

Thanks for everything John. We will be doing business again. At Nationals 6.38 on a 6.54 dial in.
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Home :: Valvetrain Components :: Valves :: Xceldyne Technologies :: Xceldyne Technologies

Xceldyne Technologies

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Xceldyne Technologies

Xceldyne Technologies is a direct manufacturer of titanium valves and valvetrain components.

For many years, Xceldyne has ambitiously sought after and successfully met the high demands of motorsports professionals worldwide. Our dedication to R&D, engineering and manufacturing has pioneered and set new standards for quality control, consistent performance and durability of racing valvetrain systems.

Superior Materials - all mil.spec / aerospace certified

Inlet material for maximum strength, ductility & toughness at intermediate temperatures
Exhaust material for the highest combination of strength, creep resistance, fracture toughness, & stability at elevated temperatures
Profile shapes allow maximum flow
Higher strength materials allow mass reduction in critical areas & maintain strength with reduced cross section
Proprietary coatings for wear and impact resistance (thermal spray, PVD and CVD technologies)
Precision polished for flawless results and reduced carbon buildup
Custom design, quick delivery and prototype service available

Technologically advanced manufacturing capabilities featuring the latest available CNC-machine tools
World-class, state-of-the-art facility with machining cells organized for optimal process specialization
Automation utilizing robotics and computerized controls allowing for maximum repeatability and quality
Proprietary stem, tip, & seat coating technologies
Dimensional tolerances held within microns