Precision. Power. Performance.

Engine Rebuilds | Performance Enhancements | Racing Modifications

At A.H.M. Performance, we specialize in high-performance engine machining, custom rebuilds, and precision modifications. Whether you need a full engine restoration, custom performance upgrades, or specialized machining services, our expert team delivers exceptional craftsmanship and cutting-edge solutions tailored to your vehicle's needs.

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7528 Philadelphia Rd, Rosedale, MD

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About A.H.M. Performance

Over Four Decades of Excellence in Engine Machining

Established in 1979, A.H.M. Performance has been a trusted name in the automotive performance industry for more than four decades. Our state-of-the-art engine machine shop is equipped to handle everything from individual engine components to complete, high-performance engine builds.

We specialize in:


  • Custom engine builds for street, strip, and track performance
  • Full engine restorations for classic and vintage cars
  • Precision engine machining, including boring, sleeving, and porting
  • Custom racing engine modifications to optimize power, torque, and efficiency


Our reputation is built on expert craftsmanship, precision machining, and a dedication to exceeding performance expectations.

Engine Rebuilds

A properly rebuilt engine improves performance, extends lifespan, and enhances efficiency. Our complete engine rebuild services include:


  • Disassembly and inspection of all engine components
  • Cylinder boring and honing for proper piston fitment
  • Crankshaft balancing and resurfacing
  • Valve jobs and cylinder head resurfacing
  • Precision assembly with upgraded performance parts
A close up of the engine of a car with the hood open.

Engine Enhancements & Performance Upgrades

Looking to increase horsepower and torque? Our performance tuning and modification services include:


  • Cylinder head porting and polishing to optimize airflow
  • Camshaft and valvetrain upgrades for increased RPM capability
  • Turbocharging and supercharging setups
  • High-performance fuel system upgrades
  • Custom ECU tuning and dyno testing
A person is working on the engine of a car.

Custom Engine Builds & Modifications

We provide a full range of custom and performance engine parts, including:


  • High-performance pistons, rods, and crankshafts
  • Aftermarket camshafts, lifters, and timing components
  • Custom intake and exhaust systems
  • Racing-grade bearings, seals, and gaskets
A man is working on a car engine in a garage.

Our reputation is built on expert craftsmanship, precision machining, and a dedication to exceeding performance expectations.

Happy Clients

We’re proud to have earned glowing reviews from clients who love the quality and care we bring to every cleaning. Our reviews reflect the trust and confidence our clients place in us

This shop does a lot of engine work for well known shops around Baltimore and beyond.

- Chris P.

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Amazing customer service, super friendly and some unbelievable prices. So glad I chose AHM would highly recommend.

- Zack Y.

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These guys are beyond great, impeccable customer service and knowledge and very personal, they go out of their way and that’s hard to find nowadays.

- Franklin M.

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A green and black race car is driving down a road in a parking lot.

Why Choose Us?

 Over 40 years of experience in high-performance engine machining


✔ Precision engine rebuilding, tuning, and modifications
✔ Custom-built racing and street engines
✔ State-of-the-art machine shop for expert craftsmanship
✔ Competitive pricing on high-performance engine parts