After months of research I came to AHP for heads and their 116 cam, glad I did. Kohle knocked it out the park with handling all of the work that needed to be done to my new to me z06. The attention to detail, the ease of communication, the quality of work. Everything was perfect. If you're looking for someone who would take even better care of your vette than you would this is the spot to go. read more

American Heritage Performance - 2009 c6z06 - Auto Repair Near Me - Harbor City, California

When I needed to have the heads reworked on my LS7 powered ZO6 Corvette, I talked to a good friend and fellow Z06 owner who had experience in that area. He instantly recommended AHP. I ordered an AHP reworked set of LS7 heads with new SS valves. In a couple months they arrived, looking like finely polished LS7 artwork. With a lot of planning and ordering of supporting parts and fluids and specialized tooling, installation was seamless. My LS7 had close to 32K miles so I had been getting nervous about possibly dropping a valve, so it was a relief to finally get the heads swapped out. It started up easily on the first try and ran perfectly. What a relief! I boxed up my original heads and shipped them off to AHP for my core exchange. Full exchange value. if everything including the used valves were reusable was 2,000.00, I was hoping to maybe get 1500.00 back but only expecting 1000.00. I drove the car normally for about 700 miles before getting the opportunity to take it to the Dragon's Tail to really test it out. I was blown away buy my cars full potential on the Dragon's tail, had no problem keeping up with two brand new C8 Z06's for 11 miles of 318 sharp curves, driving mostly in 2nd gear and revving up to 6K rpm multiple times. To say I am happy with the performance of my Z06 with the new AHP heads is an Understatement! Then to add icing to the cake, Kohle, the owner of AHP, sent me an email to let me know that although almost all of my valve guides were well out of limits, my valves and heads were reusable so I would be getting my full 2K dollar core exchange! Honestly, he could have told me just about anything, only refunded me 1k bucks and I would have had no way to prove him wrong. That kind of honesty is rare in today's business world. I highly recommend AHP and will use them again for any future projects on my Vette. Thanks Kohle and thanks AHP!! Darrin Tissandier Louisville Ky 2008 Corvette Z06 "Wil Cooksey" Limited Edition read more

American Heritage Performance - On the Dragon's Tail - Auto Repair Near Me - Harbor City, California

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!! read more

Had my LS2 engine redone at AHP a while back, after the previous shop's valve porting job ended up with a pinhole that let in coolant into a cylinder after few years. That previous shop had closed, so all the searches led to AHP as the corvette shop to go to in socal. First of all, the location is great for towing a disabled car. Straight off the 110 freeway, then one left turn into a deserted and wide street. Turn into street to the right and tow truck can back onto the shop driveway for easy unload. Corvette engine work is not cheap any where, so the differentiator for me was these guys know engines. There were new engines on stands around the shop and owner, Kohle, is proud to show off his shop and work and is a straight forward down to earth kind of a guy. His specialty seems to be head and valve work, so what else could I hope for? Damage was enough and decided to redo the entire top of the engine and internals with upgraded parts and all to give the car an entirely new life. During the build, Kohle reported something did not end up right on the old block after machining/line honing? Since the honing didn't go right, he stepped up to replace the block with a new block to make for a total new long block! The guy knows LS engines inside outside, so I don't think one can do any better on engine work anywhere else. Seems like folks even ship cars from far away to get engines done here. I am pretty anal about details and double checking, so seeing all the marks on every bolt/nut they torque just gave me an extra peace of mind that the builder has an anal system of doing things right as well, lol. After the new engine, there was a hiccup discovered several months later, and when requested Kohle to check it out, he dove in to find the hiccup and make it fully all right again to make sure the engine will be bulletproof! Any thing corvette related, I would recommend to check out this shop. I think they do all GM, so camaros too:) Sorry, no Fords... They really should open up their service to Mustangs at least. read more

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I Just wanted to thank Kohle and all the guys at American Heritage Performance again for the work they did on my Corvette. I'm out driving it today and it feels incredible and runs smooth. They had received a bad part from the manufacturer and it took longer than I wanted but I have mad respect for Kohle for not blaming the problem on everybody else and just taking care of. It means the world to me that you took responsibility for it and took care of the problem. I also appreciate all the input you gave me on the best shocks and other things that you thought my car needed. Never a upsell or where I felt like you were doing it other than to make my ride run great. I trust you immensely with our car Kohle and will always appreciate your honesty and customer service Thanks again and see you soon, but hopefully not too soon. Warm regards, read more

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. read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

Kohle is just awesome. He knows Corvettes and their engines so well. I bought a C6 Z06 a year ago, Kohle worked on it and fixed the valves and now I am a very happy camper!! I track the car and it is solid! read more

I had the heads, cam and intake done on my C6 Z06 by Kohle and the crew at AHP. I couldn't be more pleased about how it turned out. I just need to figure out how to scrape up the funds to have them build an LS7 for my first gen Camaro! read more

Kohle of AHP did my LS7 motor 7 years ago and it is still running strong after 40,000 hard miles. This time I needed the clutch replaced and Kohle is the only one I TRUST doing the job right. I highly recommend AHP. He has a respected reputation with the Corvette motor work he does. Thank you Kohle for a job well done! read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

Another satisfied AHP customer. What can I say that hasn't been written before about Kohle, Matt, Jake and the rest of AHP. Anyone who has had the experience of dealing with mechanic shops let alone custom speed shops knows the experience is (to put it mildly) highly hit-and-miss. Took my 13K miles 2007 Z06 out here from AZ based on the reviews, the fact they have done so many of these cars and the pricing was great to boot and I'll tell you, it's everything they say and a lot more. What separates a good shop from an excellent shop is the attention to detail and time they give you, the customer. Not just getting it done, but also taking the time to go over the work with you both before and after the money changes hands, taking care of little things on the car that were noticed, as well as a tour of the facilities- you get the impression they take their job seriously- even got my car back, washed. Also, I am really sold on the fact they have their own in house parts development program for these cars. Bring your car here, you will be in great hands. My car's valvetrain is now silent- like a brand new car. I'm glad I made this choice. Thanks. read more

American Heritage Performance - On the rack, what you don't see are the other big-dollar builds all around. Mine was a small job compared to the rest. - Auto Repair Near Me - Harbor City, California

Cleanest, tidiest speed shop Ive ever been in. Best experience, communication, Ive had dealing with mechs and shop manager[s] Beyond cool to find a speed shop that caters to the details and things I want. The facilities are next level. Engine dyno and fab rooms. A remarkable use of square footage. To say these guys are LS and LT experts is understatement. I have a Camaro not a Corvette, but they were cool working on it. My LT1 is little past factory break in. Fluid and diff flipped and linkage's check on the chassis. The clunky frt end niggles, gone. I'm OCD about things and I didnt even have to ask, guys are on it. Super professional, gracious vibe. Proper top shelf operation. Jake, Kohle & very on it tech Matt... Thks boys \,,/ \,,/ read more

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I am pretty particular on who I let work on my car but trust these guys to do a great job. Highly recommended. read more

American Heritage Performance - My vette - Auto Repair Near Me - Harbor City, California

Where do I began? My motor took a dump unexpectedly and it seemed like my life ended. Nobody to turn to, and getting insane qoutes for a Stock Rebuild. I found AHP, and I looked no further. Kohle, and team have been truly amazing to me. Kohle I can't thank you enough for getting me back going, nowadays shops try to get over on you but Not here at AHP, it's all Love. Coming from a car guy, you guys are truly appreciated. I honestly wouldn't know where I'll be today with the Motor if it wasn't for Kohle, AHP. Thanks again brotha, I'll be tagging you soon in the process. Wish I could give 10 Stars. read more

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! read more

Had the opportunity to speak with Kohle and he was very responsive, honest, and helpful throughout the entire process. The work performed was top notch and the care he puts into working on your car is like it was his own. Would definitely recommend, thank you Kohle! read more

I found American Heritage Performance after talking to a big box online LS store in Texas and was disappointed with their service over the phone. The corvette forum backed up AHP's reputation. I enjoyed working with AHP to have them build an LT4 for my 2016 C7 Z06. I was expecting a good rebuild with 750whp. I am blown away with my latest dyno test at 1050whp! I have a lot of experience with high performance Corvettes as I worked on the factory Pratt&Miller C5R and C6R from 2004-2007 as a brake and suspension mechanic. In my opinion AHP could be just as good if not better supplier of engines to the Corvette factory team as their current supplier. The attention to detail and after the sale help is fantastic. read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

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Kohle, Jake, and shop guys provide you an excellent service for your C6 Z06 Corvette! I installed CNC ported LS7 Package 4 heads with Moldstar90 valve guides & CHE rocker arm, along with 116 AHP Camshaft kit. Now it pulls 100 more ponies with much more bottom end torque! So far no drivability issue and surprisingly feel smoother than stock with their dyno tune. This is the place to go to fix your LS7 heads and add some extra horsepower! read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

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My 2011, C6, ZO6/ZO7, carbon fiber, black on black, with 10,000 miles just recently had new AHP heads installed. I will now state the Kohle Heimlich is the finest person in the finest company I have ever worked with on anything. Jake who works with him is just as outstanding. From beginning to end the customer service was unrivaled and on top of that you get the finest cylinder heads made installed on your car. I had hesitated to drive my car due to the ongoing failure problem with LS7 engines. Kohle and Jake have restored my ability to truly enjoy the car. That is a major gift. These guys deserve one hundred stars. There "ain't no way" to truly express my appreciation. I am duly blessed and greatly impressed! Awesome! read more

So far so good. They have my C5Z and are working on it. They confirmed some worries I had and offered solutions. They seem knowledgable and hard working so far. Top marks read more

It is long overdue, but I thought it time to give American Heritage Performance a review, especially since I frequent their site to see how I might be tempted. I'm glad that American Heritage Performance is flourishing with excellent reputation and that so many countless LS owners have benefited from Kohle's expertise over the years. I contacted Kohle maybe 6-8 years ago in regard to the heads issue on my 2008 Z06. I had also called other shops at that time but was displeased by their lack of knowledge, professionalism, courtesy and patience. They couldn't even tell me what type of valve seals they used without putting me on hold to find out. Worse, I was told that I would never have access to speak with the mechanic or any one working directly on my own car. One business was borderline rude. On the other hand, when I called AHP, I was immediately impressed and very surprised that Kohle--the owner and mechanic himself--personally answered the phone and spent so much time with me, and he did so in great detail. His assistance and kind professionalism was refreshing, exceptional and outstanding. He flawlessly answered every question I could think of without hesitation and often elaborated with much more specific information and the reasoning behind it. I'm grateful to have been treated with such unhurried and authentic kindness and respect by someone in his specialty. It is a pleasure and asset to have such a fine upstanding guy with his ability to service the passion LS owners have for their cars. As it turned out, I ended up waiting a bit longer for the GM replacement heads that I had installed by Abel to get out of spec. When the time came, I opted to stay in NorCal and had Rich at Abel (who I also hold in high trust and esteem) install the AHP Package 4 heads years ago. I'm thankful for such fine quality heads that bring great assurance to help me reap the most enjoyment and satisfaction out of this car. I have been pleased since, but always regretted not going to Kohle's shop and meeting him in person. I am often tempted to make my way to Socal to have Kohle modify my otherwise stock car to higher performance levels. Thanks Kohle and keep up the great work. Andy and Melissa read more

Took my C6 Z06 back to AHP for additional work and once again I was very impressed by their workmanship, dedication, and professionalism. Jake remained in constant communication with me, providing updates as the work was completed. I look forward to working with AHP again in the future! Summary of Work: - Flex Fuel (E85) Conversion - MSD Intake Install - Ported Throttle Body - McLeod Clutch Install w/ supporting components - Tuning read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

It's time to update my review on American Heritage Performance. Let's jump to the punch line since this review will be a tad long - these guys are simply the best. Kohle runs a top notch performance shop and has far exceeded every single one of my expectations. Before, during, and after the build, it has been the type of experience every shop should strive to provide for their customers. I seriously cannot thank AHP and his team enough. AHP re-built my custom LSX 454 motor and brought it back to life. I'm now well into 3,000 miles on the build and it has been absolutely amazing. It's exactly the type of experience you want when you spend this much on a car. The fact that Kohle was able to do this entire build in house is so important to me -- R&R the motor, assemble/disassemble the long and short block, and most importantly, all of the machine work is done at the shop. That's what really sold me on having Kohle do this -- a one stop shop with all the necessary equipment, machines and tools. He's one of the most anal, meticulous and knowledgeable people I've met. Quadruple checking all his work and clearances. That's really important when you are building a forged iron block monster that you want to last. And, it shows in the end product. To the story. About 2 years ago, I had another somewhat well-known shop (I won't name drop) build and install a brand new custom LSX 454 motor for my Corvette C6. Let's just say it did not go well. Long story short, I decided it was time to cut my losses with this other shop. I reached out to Kohle, explained my situation, we talked through pricing and options, and I towed my car to him the same week. Within a day of dropping the car off, Kohle had run through all the diagnostics and tests, presented me the facts and asked what I wanted him to do. I told him to tear apart my almost new motor with maybe 800 miles and let's hope it's just the piston rings. It was unfortunately much worse than we could have expected. Despite all the issues that Kohle continued to find in this build, he was very fair in pricing, very quick to order the new parts, and kept in constant communication with me throughout the whole process -- including pictures of the build. What car owner doesn't love seeing constant pictures of their baby? In the end, we had to replace all the bearings, bore the block, replace the pistons and rings, and then continue with all the typical honing of the block, polishing the crank, etc. As I said, much worse than just replacing piston rings. Oh, and the clutch was previously improperly installed so we had to send it off to McLeod to be rebuilt. Despite all the surprises, Kohle was on top of it and took care of me from beginning to end. And, as I said, was more than fair on the pricing. There was many things that he could have nickle and dimed me for, but he didn't. He's such a stand up guy that just wants to get the job done, and get it done right. So many shops could learn a thing or two from him. Here we are 3,000 miles later on this re-build with seriously zero issues on the motor. It's truly running flawlessly and made exactly what I wanted on the dyno. To this day, Kohle continues to provide amazing support and responses for all my questions many months after he finished. Thanks again to the team at American Heritage Performance for everything. read more

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Came here to AHP after many other people gave me positive suggestions for corvette work. I now see what they meant! Customer service is great. Communication on what needed to be done was transparent. Scheduling was a bit far out for my preference, but once the car got in, it was actually worked on promptly, as opposed to other shops who just take in the car and let it sit. I am very happy with the work that was done. Had some parts replaced, service done, and a dyno tune. Work was clean and professional. Pricing was reasonable. Thank you again! read more

I found AHP on yelp at the beginning of the year (2021) and also through the Corvette Forums, and contacted Kohle about lowering my C8. It has the front lift so lowering collars are needed. He answered my many questions and emails thoroughly and patiently. I actually waited a couple of months before lowering it as I wanted to see how my aftermarket wheel offset affected fender clearance. I made an appointment with Jake, and brought it in to their neat, clean shop. Jake greeted me warmly, also answered all my questions, and was polite to a fault. We also chatted about other things and he made me feel welcomed and comfortable as a new customer. He is a role model for good customer service. I just just missed meeting Kohle in person when I picked up the car, but wanted to express how good my overall experience has been with AHP. I'll be sure to pass along a good word to anyone who wants their Vette worked on. Here are the 'after' pics of my lowered C8. read more

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Absolutely the best shop to buy quality parts from for your vette, I wish I could have taken my car to these guys in person but I live a state away. Ordering from these guys were amazing, I emailed them with a few questions and I got back a ton of information and recommendations on what options to go with for my new set of heads I was buying for my Corvette. Very timely, informative, and most importantly kind emails were all I received from these folks. After I got my heads installed all I had to do was send back my originals for core exchange. No hassle, easy, simple. Most definitely the only shop I'll buy parts from for my car and if I can ever take it directly to them I would without a doubt. read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

Had the pleasure of AHP working on my c6 z06 to change out the heads for personal insurance, while at it had other bits changes such as 116 cam, ported msd, ported throttle body. Its been almost 2 years since and the car has never had any problems. Runs great, drives in low speeds just like factory. When flooring the car it feels like how the car should have been. I recommend all corvette owners to visit AHP if they have a chance or have some work done by them. They are a well known business for working all over the world. They are always willing to help if any questions arise. read more

How often do you experience 5-star service from an automotive shop? This has been my only 5-star experience, ever. From the moment I dropped off my little LS 3 track car with Jake to the day I picked her up, nothing but exceptional communication and excellent service. It's been said that success and failure have one thing in common; they both leave clues. The clues to American Heritages success are apparent everywhere you look, from the spotless garage, to the owner of the business that is meticulous about every detail, to the employees that freely give their time and helpful advice. Every business owner can learn something from the way Kohle operates this business, truly a top notch operation all the way! read more

Kohle and his team at AHP are all top notch. This place is the best place to go for your LS engine performance needs. They are all very friendly and patient in answering all your questions AND they are there for you even after the sale has been made. Kohle offered me assistance with any technical questions I may have during my install (me and my bro installed the LS7 heads at home). One thing that sticks out about AHP is they don't make you feel like an idiot for asking questions about their product. Other performance shops act like you should know all the answers concerning porting, springs, and other super-technical questions. Kohle and his crew patiently explain everything and run you through your options. I will DEFINITELY BE BACK for all my LS7's needs and WILL BE recommending them to all my LS friends. Trust me if you go to AHP for your heads you will NOT regret it! Now I can finally drive my LS7 and not worry about the infamous valve-drop issue. These heads are said to fix that issue and thus far have been stellar! Good work AHP! read more

I communicated with Kohle entirely via email prior to my appointment and he responded promptly. My appt was to replace my calipers on a 2013 427 Corvette. When I arrived, I was pleasantly greeted by Kohle and Ron took my information and reviewed the job. Just talking with these guys made me comfortable. I quickly realized I made a good decision by selecting AHP. I told Ron they could replace my pads and rotors but upon inspection they said mine were fine. I liked this as I nearly gave them carte blanche for a total brake job. I've found my Corvette mechanic for anything outside the 100K warranty. Highly recommend. read more

It has taken me years to find a shop as trustworthy as the one Kohle runs. I drive from Valencia to get my C6 worked on by AHP and it is entirely worth it. My car took months to repair due to parts availability issues from other vendors (not at all Kohle's fault) yet he remained patient and attentive to all of my dumbass questions throughout. Email response is very quick as well. The work is top notch as they care for every car like it was their own. Very attentive to detail. My supercharged 402 is now more fun than anything I've ever driven and I couldn't be happier. Every time I break it loose in 3rd gear, I laugh like a madman and thank AHP!! read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

I'm here to write the best review for this business as I can. I was shopping around getting quotes from multiple shops for about a month or so. Some didn't get back to me, some were rude, some didn't explain or help me out with what I needed. Kohle and his team were 100% supportive, responsive, and educated me on everything I needed for my cam set up. It was my first time putting a cam in a car, so I wasn't too knowledgeable about what exactly I needed, and the safest option. He took the time to explain things for me, and recommended the best options. Everyone from the shop was extremely nice, best customer service I have received by far from auto performance shops. Most shops are rude, make you feel stupid, don't take time time to explain anything. I will definitely be returning for all my maintenance and next future upgrades to ONLY this location. I 100% recommend them to anyone who's on a budget, not 100% knowledgeable with your set up you want, and of course anyone who treats their car like it's their kid. These guys will help you get there, and recommend the best options for you! read more

American Heritage Performance - Texas speed cam package and tune complete, thanks to these guys. - Auto Repair Near Me - Harbor City, California

Im pretty hard to communicate in general with and cant seem to get all the words I want to say coherently in one go. Kohle was super patient with me via email and was able to recommend the parts I needed to replace the harmonic balancer on my C5 Corvette. Now im wondering if they do transmission swaps. read more

Great to have a qualified and professional shop so close to Hermosa and the rest of the Southbay. Kohle has a tremendous amount of LSx knowledge and is great with both phone and email communication. From my experience communication is where a lot of shops drop the ball. I'll be working on a custom LS restomod project soon and wouldn't go anywhere else work. Stop by and talk to them and you'll see the difference; whether you know a lot about cars or not they will make you feel comfortable and informed. read more

Kohle is your man for all your Corvette needs. Had him redo my heads on the LS7. Great communication from start to finish. I'll be going back to him for more service. read more

Great service today on my zo6. They were prompt, professional and the installation was perfect. I look forward to doing more business here. The short shifter makes an incredible difference read more

Business stand point, very professional and they are happy to answer all your small questions and you won't leave nor hang up the phone feeling dumb. I have spoken to Kohle & Jake (not from state farm) and they are one of the nicest and informative guys in their field. Car community has a very harsh reputation for having egos and everyone that works there gets their hands dirty. As for mechanically, absolutely wonderful and the best. They offer some of the finest parts and KNOWS how to put them together RIGHT and have the knowledge of the science behind it all. Everyone that works behind the scenes are super meticulous and checks each other's work 10x over. The short of it, if you have a corvette just bring it here for the work! You won't leave worrying about a valve dropping ever again. I drove out of their shop, romped on it putting her thru the paces during the 2hr ride home and no issues!! read more

5 stars all the way. The work is 2nd to none and neither is the customer service. I was so pleased to deal with Jake in getting some feedback on exhaust and supercharger and then the communication till it arrived. They took great care of my C7 and I am pleased with the performance of it and quality of work. read more

First time taking my new-to-me C6 to the shop. American Heritage has a good reputation on the forums, as well as thru some personal friends who have used them. Pricing was about average, no complaints. Jake, the service advisor, made the whole visit super easy. Communication was A+, letting me know about an issue that popped up ASAP. Got a call for every step of the visit. They had my car for a reasonable amount of time, and the car was ready to be picked up promptly the next morning. Nice touch with the hand wash, I appreciate it! I will come again for any other issues I have with my corvette. Very trustworthy, transparent service. read more

American Heritage Performance - Auto Repair Near Me - Harbor City, California

This is the best place you could take your Corvette, or for that matter any LS-based GM engine bar none. Kohle Heimlich knows Corvettes BETTER than anybody that is outside a GM engineering room ( and I would bet inside as well)Put together the added benefit that when you bring your business here, they really forge relationships with their customers. I worked in the auto restoration business for the past couple years particularly vintage GM , whenever people wanted to upgrade and go the LS way and would ask me where to start. I would send them here because this is where I would go. I know their work and I know they stand by it. That is something that is a rarity today, it's like an old school speed shop with modern toys. It doesn't get much better than this. American Heritage Performance never disappoints, and I can't stress this enough, from not only quality of work, but also knowledge and availability. No attitude here whatsoever, Kohle has always taken the time to answer any questions I have ... if you're passionate about your Corvette or LS products you will be hard-pressed to find somebody with the knowledge and passion about modern American muscle then the guys that work here.... read more

Even during these crazy times we all get a little behind but in regards to service clarity and professionalism you will not find anyone else in the business better than these guys!!! Did an amazing job with my zo6 (fixing the ls7 heads) and highly recommended them for all your vette needs!!! Will definitely be coming back for all my services. Don't second guess it , give them a call and you will be amazed at the level of service and detail they provide. Thank you all at AHP btw read more