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Customers

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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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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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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Carl E.

Carl E.

Dodge SRT-10 Viper
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Bob F.

Bob F.

Plymouth 426 Hemi
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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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Ricky R.

Ricky R.

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

David P.

Thanks for the brake lines !
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Taylor M.

Taylor M.

Thanks a lot John !
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Buyer

Super guy to deal with! GREAT SERVICE!! GREAT PRICE!!
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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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Hannu O.

Hannu O.

thank you very much from Finland!
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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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Troy K.

Troy K.

Thanks for all your great help with my Viper.
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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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Maurice

Maurice

Maurice 73 Dodge Dart
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Dan B.

Dan B.

Dakota R/T 408, Thanks for everything! Dan https://www.youtube.com/watch?v=wZekmXKYXA4
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Craig W.

Craig W.

Thanks John, So far 8 races and 8 top Five!!
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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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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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Steve V.

Steve V.

You are the only guy who I trust to do the most important thing I'll ever do to my Roadrunner, a car that means more to me than any inanimate object...
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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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Shaine D.

Wow! Thank you for that quick and informative response. Must be why you are always recommended. Shaine
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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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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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Dodge Viper Billet Roller Rockers

Lightweight roller rockers provide more precise valve timing for horsepower improvement over stock. Conservative performance gains are 17-20 RWHP and RWTQ on a naturally aspirated engine. Gains may be higher on earlier Vipers that had a 1.5:1 ratio in stock form and in forced induction applications (typically 26 RWHP). The set of roller rockers will come with all mounting hardware and will require aftermarket pushrods. Harland Sharp has over 40 years of experience in building roller rocker arms. We try to make them affordable, adjustable, and easy to install for the average enthusiast. Tests show reductions in weight, friction, heat, and valve guide wear and increases in horsepower and performance through more accurate ratios and valve timing. The Dodge V10 rocker arms are a direct bolt on. Fully adjustable for use with larger cams No machining required 1.7 Ratio



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