Todd, Will, and Myer dig into Fast 72, the new turbo limited diesel racing class that is already turning heads and stacking serious prize money. A single 72 millimeter turbo and a fuel only setup are producing six figure purses, and this episode breaks down why.

They start with the actual rules of the class. No nitrous, no water injection, no methanol, just engine, turbo, and chassis. From there they get into why the trucks making the biggest peak horsepower numbers on the dyno are not always the ones winning at the track, and why second gen Cummins trucks keep running away with it the same way they have been dominating UCC.

That leads into camshaft talk. Overlap, intake valve closing events, and how RPM range should dictate cam selection, and why a cam that makes huge peak numbers can actually bleed off boost and lose power down the track. The conversation then shifts to cylinder heads, covering valve sizing, port flow, and why a factory piston might outperform a forged piston at this power level.

There is also a quick detour into transmission durability, since the top two finishers in this class are both running stock automatics, plus a reminder that this is not a high dollar class. Anybody with an engineering mindset can be competitive here.

They close out talking about the next Fast 72 event in Texas this September, with a purse north of one hundred forty thousand dollars on the line for the season finale.

If you are into diesel performance, Cummins builds, or smart engineering beating raw horsepower, hit subscribe on YouTube and follow the show on your favorite podcast platform.

Everything the guys talked about when it comes to cams, cylinder heads, and turbo limited builds is the kind of work Power Driven Diesel lives in every day.

Head over to PowerDriven.com to check out the full catalog and get your own build dialed in.

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