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The owner, Don Mackie, has been involved in building high-performance race engines and racing drag cars since the mid-50's. Fords have always been his choice. He was known to have his tow car running as fast as his drag car! He took his first diesel mechanics class when he was just 13 years old, while his father was stationed in occupied Japan. He has traveled and worked all over the world as he followed heavy construction and pipeline work as a Master Mechanic and Equipment Superintendent. His last job that he worked for someone else was on the Alaska Pipeline where he orchestrated the largest air lift program of its kind. His love for racing and building "go-fast" engines has been a driving force in his life. His goal is to help others "go-fast" using his expertise.

What prompted us to start G.P.M Racing Engines, a new division of Golden Precision Machine?

I have been involved with drag racing since the mid-fifties. The employees of G.P.M. Racing Engines have a combined total of 85 years experience in high-performance engine building, we love what we do and know how to make H.P.

We do antique racing engines, muscle cars, circle track, drag racing, and high-performance marine engines.  We have the equipment and know how to build most any type of high-performance engine. We have access to all popular brands of speed equipment and at competitive prices.  We will custom build any crate engine or we will do your machine work according to your specs.  We also have a very good general machine shop - lathe, milling machine, heli-arc welding, etc.

What makes your shop different from other machine shops?

G.P.M. Racing Engines is dedicated to high performance engines.  The Rottler F65A CNC Machining Center is capable of blue printing every surface on a block including the bellhousing and timing cover surfaces.  Cylinder bores, line bore, lifter bores, as well as cam boring for roller bearings.  It will also clearance block for stroker cranks.  All of these functions are computer controlled and held to within 2/10's tolerance.

We back this up with a new Rottler seat and guide machine, Petersen power stroke hone with diamond stones and brushes to obtain optimum cylinder finish.
Sonic testing, magnafluxing, full Sunnen rod shop, Berco 260 crank grinder with indexable chucks, shot peeing, glass beading, and the latest computerized balancing equipment.

Josh Tennis has been at GPM Racing Engines for 7 years. His love for cars and race engines started before he could drive-as he would "dream" over all the car magazines he could get his hands on. He has been pursuing a degree in Mechanical Engineering at the University of Missouri-Rolla for three years. He has taken a short break from his formal education to help establish GPM Racing Engines as a premeir high performance machine shop. He is the operator of the F65 Rottler Machining Center and all other equipment that operates with a computer. He is Don's "right-hand man" and will be happy to help you with all of your racing needs.

Bill Smith has been in the shop four years and has over 30 years of experience in machine work, with the last 10 years in building high-performance engines. Bill specializes in crankshaft work and head service/ port work.

If you are in the area you are always more than welcome to come by and benchrace on your next engine combination or improving your current one!
Machine Shop Hours:

Mon.- Fri.  8 AM-6 PM
Sat.- 8 AM-12 PM
Closed Holidays

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