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Customers

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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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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Michael W.

Michael W.

After getting all the compatible stuff shes a beast! Michael
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Billy W.

Billy W.

Dakota R/T 408
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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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Josh F.

Thank you sir. "I've been buying race car parts and dealing with vendors in my job every day for the last 15 years. I have never dealt with a...
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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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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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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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Robert S.

Robert S.

Great parts and service! Robert
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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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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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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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Robert S.

Robert S.

426 Hemi Cuda
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Derek B.

Derek B.

Great Personalized service. Derek
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Michael D.

I just wish there were more guys like you around for us gen3 guys. Most just want a sale and don't care to actually help let alone give advice or...
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Steve B.

Steve B.

Thanks for the help with my 426 stroker.
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Hannu O.

Hannu O.

thank you very much from Finland!
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Bob F.

Bob F.

Plymouth 426 Hemi
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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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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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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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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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Barbara H.

John, Thanks again for making Colton's dream come true! The truck is in the body shop, the cowl hood arrived and the new 408 engine you built is...
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Taylor M.

Taylor M.

Thanks a lot John !
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Ratech Install Kits

We Manufacture all of our shims in-house on our own machinery.

We use the absolute finest American made Hardened Shim Stock available.  We not only have the steel checked for metallurgical specifications but we pay to have every square inch of material x-rayed.  That's right.   X-rayed for hidden flaws in the Shim Shock.

We do not use anything less than .010 thick for our shim packs.

We use only hardened shim stock not sheet metal gauges.  Shim stock comes in .002 increments whereas sheet metal is soft and the gauges are all over the map with many gaps in thickness and .0005 sizes.

The thickness range of our shim packs are much broader.   In most cases .020 over and under the normal thickness range --- not just what is the most often used.




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