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February 2024 by Eli Puskar
By a long shot the best customer service I ever received from a company. Kohle answered every single email with not only a response but an explanation. He gave my concerns his time and attention. I will be a returning customer and will recommend his company. Parts showed up well packaged and worked great. Was missing an item as my order was large and after a quick email that part was just about over nighted to me. Appreciate all the work and time from this place. Highly recommend.
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February 2024 by Roger Baker
They seem like good guys and I've known them for years, but frankly I can't recommend them anymore as it's taken them YEARS to nearly finish my car. They broke a cylinder head, and it took over 2 years to get a replacment to finish my engine build, and there were always excuses as to why it wasn't getting worked on. Now the car is supposedly "mostly done" and I can't even get a date or dollar amount to pick it up. If you want to keep your car, I'd go somewhere else.Update after Kohle's response: appreciate you finally giving me my car back but your comment is at best 25% accurate. I helped consult on ways to grow the business, lent you tools and helped setup distributor accounts. I was patient for several years and didn't want to push you to rush the as business grew, but you know damn well I kept in touch regularly. I have all the emails, texts & communication records to prove that (including all the messages I sent that you never replied to for months each time). Also, you very well know your machinist broke one of the new heads I purchased for the custom new engine build (which was paid for in advance) and it took you 2- 3 years to replace the head to even finish the long block. Once we finally got the head resolved & agreed to wrap it up to get the car out I informed you several times to give me a $$ you were comfortable with or give me estimates for any "extra work" that I would owe you for. Never ever was any new estimate provided... I even said a few times to just "give me the car back and I'd finish it myself", but you wanted to honor your original decision & finish it to protect us both to make sure the engine "worked". Fast forward several YEARS later, and many dozens of ignored texts & messages and here we are (oh and BTW the car still doesn't run). Not to mention I'm missing the return of approx $15k of parts, including things like the complete original LS7 engine, Corsa mufflers, Katech carbon undertray, fender liner, stock hood, driveshaft, lost key, new T&D shaft rockers, Holley valve covers, ZR1 injectors, and possibly more as I'm still going through what's "not on" the car. After several years of delays, regardless of how you feel you know darned well you can't put this on me!
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February 2024 by Daniel Greer
Kohle and the team got me in and out, installing my cat back exhaust on my C8. Super friendly team there, super professional and have the personal touch! Looking forward to bringing my beauty back there for more work!More Work: Took my C8 in for headers + ceramic coating, high flow cats, intake, intake manifold, throttle body, lowering springs, spacers, wing install. Lots of work. We ran in to some issues with the throttle body, and Kohle and the guys coordinated sending that back to get fixed/replaced, and it went fantastic. The quality of the build, everything to torque spec. It feels like a new car, and I could NOT be happier with the service I experienced. This is the only shop I will take my C8 to. If you want modifications done right the first time, look no further!Thanks a ton guys!!
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February 2024 by Gordon Ingalls
Turned my car into a beast with a .665 lift cam in a streetcar. The heads, intake manifold, cam and everything else involved for my build from AHP were the highest quality. Even from across the country, Kohle was responsive and helpful with overcoming any challenges we faced building the car. Couldn’t be happier with the setup, and could not recommend AHP enough.
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February 2024 by HybraTater
I just wanted to share this with fans of the LS7 engine. I have been running a set of refurbished LS7 heads from AHP with the MoldStar 90 valve guides for just over 20,000 miles over a 3 year period. Tearing down engine top to do another cam upgrade and change valve springs allowed me to do a proper detailed inspection of my valve guides for wear. Wear is non existent, with less than 0.001" radial play measured with Starret dial indicator. This is nothing short of amazing and I am a believer in AHP and their application of the MS 90 valve guides. Thanks Kohle, for awesome service, products and a great friend to the LS community.
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January 2024 by Roger B.
Maybe they're OK for small projects, but for big ones, you'll be lucky if you ever see your car again. Many years and thousands of dollars later, I'm still left without my Z06 and they ignore most of my communications. I can't even get an answer out of them for the final bill or when I can pick up my car!
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January 2024 by Daniel G.
Kohle and the team got me in and out, installing my cat back exhaust on my C8. Super friendly team there, super professional and have the personal touch! Looking forward to bringing my beauty back there for more work! More Work: Took my C8 in for headers + ceramic coating, high flow cats, intake, intake manifold, throttle body, lowering springs, spacers, wing install. Lots of work. We ran in to some issues with the throttle body, and Kohle and the guys coordinated sending that back to get fixed/replaced, and it went fantastic. The quality of the build, everything to torque spec. It feels like a new car, and I could NOT be happier with the service I experienced. This is the only shop I will take my C8 to. If you want modifications done right the first time, look no further! Thanks a ton guys!!
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December 2023 by Nathan Miller
Kohle and his guys are amazing. They got my vette running right!
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September 2023 by Tom Rundle
I replaced the LS7 Heads from my C6Z06 using their core return service. The heads were packaged super well, arrived without a scratch and have performed flawlessly so far. Kohle was very responsive to my emails and provided great service after the sale.
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July 2023 by Al N.
I had the pleasure of receiving my completed cylinder heads from Kohle and his Staff in 2017. The workmanship was stunning and the heads would have been framed and mounted on my wall if they weren't needed in my 2009 Z06 ! I have driven the car about 8,000 miles since and have enjoyed every minute...the difference in the sound of the engine at idle, compared to the stock "sewing machine," is much more appropriate for a 505 hp work of art....or should I say, the absence of sound.I was very pleased to be able to call to ask questions and was never "on hold". I opted for the C.H.E. rebuild of my rocker arms as well. Great service, great communication and a very fair price, even taking into consideration that I had to ship the heads from Rochester, NY. Those of you in the far west, make the pilgrimage to AHP in Harbor City, CA !!! THANKS AGAIN, Kohle !!!
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June 2023 by Cody Weddon
Can’t speak highly enough of Kohle and his team. The best customer service in the game. They went above and beyond in helping me with figuring out what heads and cam would be the best fit for me. Then when I received the parts, the quality was outstanding.
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June 2023 by Aubrie Smyth
My boss took his Corvette C8 in here and they did a magnificent job! The owner was fantastic. They were incredibly efficient and knowledgable. For someone who doesn't trust many people with his precious car, my boss could not speak more highly of this shop! He is super happy with the service, as well as the work he had done. Thank you guys!
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June 2023 by James R.
I live in Seattle and own a LS7 powered corvette. I was finally convinced to get the heads redone before the motor grenaded and after talking to several different people who offer similar services, I decided to go with AHP. It came down to Kohle's knowledge on the problems with this motor, the varying degrees of work you can select, the ease of repair with their head exchange program and head installation kit. I had the heads mailed to me, had a local shop do the swap, and my car runs great. The peace of mind is well worth it.
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May 2023 by Marina W.
The owner is trying to hide my review or something because other people can't see my Google review Kohle calls me by my name from the get go but decides to call me sir towards the end. As if girls can't own corvettes
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April 2023 by Jim Reed
I bought my c6 z06 to enjoy driving it but after I became aware of the valve guide issue I had to get that fixed. After talking with several of the LS7 head rebuilders, Kohle impressed me with his knowledge of this motor, it's weaknesses, and the fixes. I was able to purchase heads at the lowest possible expense, I didn't need any of the optional performance upgrades because the car is fast enough for me, and the swap process was easy, fast, and the heads worked great. I highly recommend these folks.
