Gunn Automotive Machine Shop 145 South Federal Boulevard, Denver, CO 80219

"I’ve been going to Gunn for over a decade. I’ve probably brought them hundreds of sets of cylinder heads and have always had a pleasant experience with Kenny and TJ. Their staff is also friendly and very helpful. Turn around times are quick and better than most shops. Their work is also top notch. They’ll always have my business as long as they are there!! Thank you all!"

"These guys were great help on my first ever engine rebuild. Everything went without a hitch. I’ve called multiple times with noob questions and they’ve been happy to drop what they’re doing and have a helpful conversation. Can’t more highly recommend anyone else."

"Brought my Honda head in for resurfacing, and had to be one of the most pleasant experiences ever. Head had an incredible finish quality and was spotless of any metal shavings. Super cool shop, very friendly and courteous, and same day turnaround for an amazing price!"

"Brought my Subaru heads in to get rebuilt and am very happy with the results! Kenny was very up-front about the costs, and informed me about the lead time to get it done. When I went to pick them up, he spent a good 15 minutes going over exactly what he did and explained exactly why he did them. The heads both look great now, and I'm confident that they're going to work perfectly! My dad has brought several engines here over the years and has always been happy with the results. The best part is that I don't feel like I'm getting ripped off or anything... Kenny was very helpful and honest through the whole process and explained everything to me. I think the 5-6 week lead time at this shop speaks for itself as to the quality of their work! This shop gets an A+ in my book!"

"I had the best service at this machine shop and their prices are hard to beat. I had a great experience with the customer service and the honesty of the employees. Kenny helped me the most and he was the best!"