Give us a call today!

150 West Street,

Sunbury, PA 17801

Monday - Friday

7:30am to 4:00pm


At MAPCO Machine Shop, our engine builders have over 75 years of combined experience with engine machining and building. Our custom engine builds cover many different configurations ranging from LS engines, Ultra4 off-road racing, tractor pulling, circle track racing, drag racing, custom restorations, and many, many, more. Give us a call to discuss your next custom engine build!

Engine Building & Rebuilding

Engine Dyno Testing & Tuning

Up to 1600 HP!

Valve Jobs

Engine Head Surfacing

Engine Boring

Crank Shaft Grinding & Balancing

Custom Engine Builds Specific to Your Application

Get your engine to peak performance

Contact us today to get your engine in the shop and running like a true racing engine.