About Us

Butler MacMaster Exterior


Butler MacMaster is New England’s industry leader in Performance, Street, and Industrial engines. Located in Hallowell ME, just south of Augusta, we have been servicing our customers with Performance Racing packages, Industrial Diesel, and custom restoration projects of all makes and models, since 1978.

We are now proud to bring you our all new Butler MacMaster online retail store, where we offer everything from complete engine packages, to Tie Rod ends, and even T-shirts and hats. Utilizing our user friendly, ecommerce platform, our customers are able to order exactly what they want, when they want, and all at the most competitive rates on the net.

We offer our customers full engine rebuilds consisting of a complete engine disassembly, Cleaning, Non-Destructive Testing, Machining, and Reassembly. Each individual component of your engine is visually examined and physically checked to ensure proper specifications are met before the machining process begins. We will consult and work with you throughout every step of the process to ensure that you are satisfied. Our machine shop is one of the largest and most diverse in the industry. We have the capabilities to accommodate nearly all OEM's and models, and pride ourselves on our quality and ability to handle any job. Our machining competencies involve all engine components; Heads, blocks, rods, crankshafts, you name it; we can do it. Our custom restoration projects throughout the years have encompassed great diversity; so do not hesitate to ask us about any job.

Our state-of-the-art Dyno, and Dyno facility is one of the most advanced and diverse in the entire North East. Our temperature controlled environment, and state of the art instrumentation allows for precise tuning and Horsepower measurements time after time. Also, if your engine has already been built we will gladly put it on the dyno and make the necessary adjustments in accordance with our customer’s instructions. Our dyno is equipped to handle engines as small as 4 cylinder 2300 Fords, 22R Toyotas. On up to Big Block Chevys and other custom engines over 1,000 Horse Power. Our computer will then print the results of the dyno run for the customer's verification. We also have the capabilities to run fully dressed marine engines utilizing the complete marine cooling system. If you would like to come in and see your engine run on the dyno, we will gladly work with you and arrange a time that works best. We have allowed our customers to watch and verify their engines run for the past 15 years and enjoy doing so.

Our skill sets and workmanship have proven themselves over the years to many happy and satisfied customers. We look forward to having the opportunity to work with you, and remember: whatever requirements you have, we can meet and exceed.