2015 3.0 PPL Rules

http://www.propulling.com/images/pdf/2015/ppl-2015-rule-changes.pdf

Am I reading something different than everyone else? Doesn't it say the "Head must be OEM for that brand engine"? Doesn't that mean that in the Pro Street Diesel Truck Class that ONLY a Cummins, Duramax or Power Stroke head may be used? Those are the ONLY OEM manufacturers of the heads for those engines, Hamilton, Dart, Wagler or anyone else from the aftermarket would not be an OEM head for that brand of engine so those heads could not be used...

This is the part I really don't understand...
"Outside of cylinder head must measure factory width and length." To follow that rule how could ANY of the Cummins powered Pro Street trucks use a head (Cummins or otherwise) that has the intake milled off to allow an aftermarket side draft intake to be used? Milling the intake would make the head narrower than the factory width, so by that rule the engines would need to use a full factory head and factory style intake. Wouldn't that be a huge step backwards in power and performance for all the Cummins trucks?
 
Or, does OEM mean that the heads from a Ford can’t be used on a Chevy or Dodge etc. How that would work with dissimilar bolt patterns and sizes would require a lot of effort. If they intended to not allow aftermarket heads on the engines why would they have size requirements? Original equipment heads would be the same size as original equipment heads. It could simply say “no aftermarket heads permitted”, in the same way aftermarket blocks are prohibited.

3a. Maximum engine size will be 460 cubic inch. Engines must come from factory in one ton or smaller Diesel pickup truck. Engine must remain in stock location as intended by manufacturer.
3b. No aftermarket blocks permitted.​
 
Yup, who knows what they mean for sure, I thought that would be part of the clarification...

But, OEM stands for Original Equipment Manufacturer so I do not see a way that it can be translated into aftermarket manufacturer. I can't think of any reason someone would want to use a Cummins head on something other than a Cummins or a Duramax head on something other than a Duramax and so on... Like you said the bolt pattern and such would make it nearly impossible.

What about the machined Cummins heads? How are those going to be allowed when they are no longer factory width and length?
 
kjpcummins said:
Looks like you can run billet heads in 2.6 and 3.0 now.
Click to expand...

:bang. Billet with a factory style shelf? who the hell writes this chit. Not arguing with you just amazing they changed this twice and still as screwed as it was before. Actually worse. I was told the original intention for the whole rule was to say no billet heads. Maybe I'm wrong.
 
jones95runner said:
:bang. Billet with a factory style shelf? who the hell writes this chit. Not arguing with you just amazing they changed this twice and still as screwed as it was before. Actually worse. I was told the original intention for the whole rule was to say no billet heads. Maybe I'm wrong.
Click to expand...

Do you run a oem head with the stock intake shelf still on it or has it been milled off. It should be either oem head or aftermarket. If you going to allow a aftermarket cast head you sbould allow a billet head.
 
kjpcummins said:
Do you run a oem head with the stock intake shelf still on it or has it been milled off. It should be either oem head or aftermarket. If you going to allow a aftermarket cast head you sbould allow a billet head.
Click to expand...

Oem milled. By the way I read it though milled should not be allowed. I could care less though. Only ppl pull I would go to is schied and ts. Although I do disagree with if they allow aftermarket cast to allow billet too. If you want a billet head their is a class for you.
 
How is a aftermarket cast head any different than a billet head. Its just a different process with same end result.
 
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