Custom Engine Building

tractor truck pulling engine replacement building

Put our knowledge in building horsepower and over 30 years of experience to work for your next project. 

We can save you money, time and heartache by building your next motor that will do what YOU want the FIRST time. 

We don't build cookie cutter engines to compete with online prices.  It is important for our customers to be satisfied with their next engine build. 

As a racer myself, I understand how hard customers have to work to come up with the hard earned cash and we don't want to waste it!

With our attention to detail and one on one personal attention, "dyno" expertise we have the confidence that if we can't make it run better than what you had - you don't pay.  We want you to get every ounce of power you paid for.

We specialize in high performance engines and rebuilds for:Race Car Drag Engines Building Replacement


We want you to get every ounce of power
you paid for.




With Hagedorn Racing Engines, we had a great season in 2013, Taking home a Modified 2-Wheel Drive Championship and a 6,500 lbs. Open Feature Championship! We also took First Place in the Modified 2-Wheel Drive Championship at the MO State Fair! We are ready for 2014 season to get underway! Thank Terry!

The Halley's and Shazam Pulling Team