Brand New Cast Duramax Cylinder Heads From Wagler Competition

Jeremy Wagler started Wagler Competition in 2001. Initially, they were a performance and repair shop but as the diesel industry blew up, Wagler started focusing more and more on manufacturing. Then in 2009 (during the recession), he went to Brodix to see if they would be interested in casting a cylinder head for the Duramax.

Wagler was looking for something that fixed some of the issues with the Duramax cylinder heads and, also, had room to flow much more than the factory heads would. Brodix passed on the opportunity. Wagler just couldn’t stop thinking about the cylinder heads. So, about a year later, Wagler decided that it was time for someone to step up even if that meant he had to do it. So, he decided that he was going to cast a cylinder head for the Duramax! Wagler called up Jeff Jones of Jones Engineering and together they designed a new cylinder head for the Duramax engines.

This time, when the design was finished, he went to Brodix and paid for them to cast these new cylinder heads. If you aren’t familiar with Brodix, they are a huge player in high-end racing and are extremely well known for their performance cylinder heads. This is why Wagler went to Brodix in the first place. Wagler knew that Brodix would be able to cast the heads without any problems and knew he could count on their reliability.

The new cylinders heads are pretty special. “We moved the valves slightly to allow for future growth and we reshaped the ports. In addition, the heads have an integrated injector cup,” said Wagler. “We are really excited to be able to offer these [heads]. They took a long time and a lot money to produce, but the end product is well worth it,” continued Wagler.

With them changing the valve location and port sizes, they are able to more than double the flow of a factory cylinder head. The heads flow up to 300 CFM on the intake (factory is 160 CFM) and 260 CFM on the exhaust (factory is 140 CFM). This is due in part from the increase in valve sizes. The factory heads and Street Series heads feature a 35mm intake and 34mm exhaust valve while the Extreme Series bumps that up to 38mm on the intake side and 37mm on the exhaust side.

To make sure that these are obtainable for most, they are sold in a wide range of configurations. 

The “bare casting” which includes seats and guides is $3,384.68 and you can have those CNC ported for an extra $1500 dollars. If you are looking for a more turnkey option, they offer the S-Series (street) for $6420 and they go up to their X-Series at $8220. “We will, also, install the customers valve train in our bare castings as an option,” added Wagler.

For more information, check out their website and/or Facebook page.