By Jan Knobbe

As we step into the new year, it’s fascinating to reflect on the remarkable technological journey in engine upgrades since our establishment in 2005. Over the past 19 years, the advancements have been nothing short of extraordinary.

Fifteen years ago, our focus was on twin cam and evo engines. Upgrades involved meticulous valve jobs and hand porting, transforming 88 cubic inch motors into 96 or 96 into 103 cubic inches. Significant builds then pushed the boundaries, reaching 110 to 117 cubic inches.

Fast forward to today, and we find ourselves working with twin cams and M8s. Modern upgrades now encompass CNC porting of heads, air research benches for precise airflow analysis, installation of big valves, and the integration of four-valve heads. The evolution of cam shaft technology is particularly noteworthy. Today’s cam shafts enhance airflow, leading to superior cooling of exhaust chambers, resulting in increased horsepower and reduced octane detonation.

In just five years, M8s have undergone substantial improvements, featuring two over and four over valves, coupled with CNC ported heads. This configuration nearly doubles the airflow in factory heads. The M8’s single cam design significantly reduces drag on the cam chest, freeing up horsepower in stark contrast to factory twin cams. Standard M8 upgrades range from 107 cubic inches to 124 cubic inches and 114/117 cubic inches to 128 cubic inches, creating reliable daily drivers. For the more adventurous, major engine upgrades can top out at 175 cubic inches.

To put this progress into perspective, consider that years ago, an 88 cubic inch motor built up to 96 might generate around 95 horsepower. Today’s factory motors, at 107 and 114 cubic inches, produce 100 horsepower. Pushed to 175 cubic inches, they unleash a staggering 200+ horsepower at the ground. For the true gearheads, there are additional options like pro chargers and turbochargers.

The evolution of motors is a perpetual journey, always seeking smarter ways to boost horsepower. At Chariots of Fire Customs, we take pride in staying at the forefront of these advancements.  Such as our drag racing endeavor in our early years to now racing in the bagger class at local tracks in order to put effort into finding even more horsepower.  Thus ensuring that our knowledge aligns with the latest market offerings. Our commitment is to provide the best possible service to our customers, tailoring each upgrade to individual needs.

If you’re contemplating changes to your machine’s heart (don’t just put in stents), come and have a chat with Jan. Discover what modifications will work best for you. Reach out to us at (636) 462-1648.  Let’s make this year a horsepower-packed adventure for your ride!