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Business Details
25 Years
experience
Your Trusted Auto Repair and Machine Shop in Fort Collins
Since 2001, Ams Automotive Machine & Supply has been a trusted provider of comprehensive automotive repair and performance enhancement services. Our expertise spans small engines, marine applications, racing vehicles, and heavy-duty diesel systems, supported by a full line of performance and OEM replacement parts. We prioritize quality craftsmanship, timely service, and transparent communication, ensuring every customer receives personalized attention and exceptional results.

With decades of combined experience, our team specializes in precision machining, engine rebuilding, and custom modifications, backed by a reputation for reliability and technical excellence. Our commitment to continuous improvement and customer satisfaction drives every project, from routine maintenance to high-performance builds, making us a leader in the Fort Collins automotive community.
Services
Engine Rebuilding Cylinder Head Service Performance Modifications Diesel Repair Marine Engine Service Racing Applications Crankshaft Balancing Block Boring & Honing
Details
  • Year established: 2001
Highlights and features
  • We offer 20+ years of experience in automotive machining and repair.
  • Our team provides comprehensive services from routine maintenance to high-performance builds.
  • Attention to detail ensures every project meets exacting standards.
  • We maintain transparent communication throughout every repair process.
  • Our reputation for reliability has been earned through consistent quality work.
Services
Engine Rebuilding
Our comprehensive engine rebuilding service restores performance and reliability to worn or damaged engines. Using precision machining and quality components, we rebuild engines for street, racing, and marine applications. Customers benefit from improved power output, fuel efficiency, and extended engine lifespan through our meticulous assembly process in a dedicated clean room environment.
Cylinder Head Service
We offer complete cylinder head repair and performance optimization including valve jobs, guide replacement, and custom porting. Our flow bench testing ensures optimal airflow for racing and high-performance builds. Customers receive enhanced engine breathing and power gains through our precision machining and crack repair capabilities.
Diesel Repair
Specialized diesel engine repair covers light, medium, and heavy-duty applications. Services include block boring, crankshaft straightening, and performance modifications for increased torque and efficiency. Customers gain improved reliability and power output for commercial and racing diesel engines through our technical expertise.
Crankshaft Balancing
Our digital crankshaft balancing service ensures smooth engine operation at high RPMs. Using advanced equipment, we balance crankshafts for racing and performance engines. Customers experience reduced vibration, improved longevity, and enhanced performance through our precision balancing and welding services.
Block Boring & Honing
We provide block boring and honing services with or without torque plates to maintain cylinder integrity. This service prepares engine blocks for stroker builds or worn cylinder restoration. Customers benefit from precise tolerances and improved piston ring seal for maximum performance and durability.
Questions
What types of engines do you work on?
We service gasoline and diesel engines for street, racing, marine, and heavy-duty applications including small block Chevys, Ford 347s, and Cummins diesels.
Do you offer performance modifications?
Yes, we specialize in high-performance builds including custom porting, multi-angle valve jobs, and stroker crank installations to maximize power output.
What are your business hours?
We're open Monday, Tuesday, Thursday 7:30 AM-5:00 PM, Friday 8:00 AM-4:00 PM (closed noon-1:15 PM for lunch), and by appointment Wednesday.
Can you handle racing engine builds?
Absolutely. Our shop has extensive experience with racing applications including digital crank balancing, flow bench tested heads, and custom fabrication for drag racing and competition builds.
Do you sell performance parts?
Yes, we maintain a full line of performance components and OEM replacements in our speed shop for both common and specialty automotive applications.
Reviews (5)
Danny Gasser
May 31, 2022 Report
These guys did a great job building my new ls7 motor. They got it in and assembled with minimal down time and the motor now has about a month of driving on it and about 600 miles on it. I have done two oil changes and they have looked perfect.
Rick Carpenter
Mar 23, 2021 Report
I had a Oldsmobile 455 built for my 1953 Olds 98. All the machine work and assembly was done by AMS and am very happy with the performance. I will choose AMS for my next build.
Pro Sports Therapy Llc
Feb 27, 2021 Report
Darin and his crew built my B16A1 and did a great job. Makes plenty of power and great reliability. Will continue to use this shop for all my performance needs.
B. Bb
Feb 04, 2021 Report
I've had a few engines and sets of heads done with these guys. The level of craftsmanship is superb, however this is a small operation. Sometimes they get a bit backed up with all of their orders, leading to a longer projected completion date. Top notch customer service.
Cody
Dec 18, 2020 Report
Had some BMW and LS engines done by them. Always a great price and service. They do have a wait time but a machine shop that's not booked out is a machine shop not worth going to.