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01-17-2015, 09:13 PM
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#61
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Name: D&J Precision
Title: Green Behind the Ears
Status: Not Here
Join Date: Jul 2011
Member`s Gallery
Posts: 66
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They are updated on there site
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01-17-2015, 09:50 PM
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#62
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Name: JL Builders
Title: On a quest for more power
Status: Not Here
Join Date: Apr 2011
Location: Moseley Virginia
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Posts: 1,267
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Still leaves a lot of grey area. They make no mention of a height restriction on the head.
__________________
6.7 sled puller, cracked motor in half.... Nothing to show for it. But ready to try again.
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01-17-2015, 09:53 PM
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#63
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Name: Pony_Kegger
Title: Too Much Time
Status: Not Here
Join Date: Jul 2009
Location: Jefferson City, Mo
Member`s Gallery
Posts: 369
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Does this new rule mean that the hamilton head is out now.
__________________
2005 1500 4wd
CR Hamilton Comp Block, Monotherms, 207 Cam,12mm Pumps, 350% S&S 48re Cope Manual Valvebody, Triple s475s
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01-17-2015, 10:46 PM
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#64
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Name: Chris Tobin
Title: Too Much Time
Status: Not Here
Join Date: Jun 2008
Location: Dayton, TN
Member`s Gallery
Posts: 2,662
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http://www.propulling.com/images/pdf...le-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?
__________________
Chris Tobin
Editor--Ultimate Diesel Builder's Guide
Freelance Editor and Photographer
Working with DIESEL WORLD, DIRT SPORTS, MUSCLE CAR POWER & STREET TRUCKS magazines
tobinemail@aol.com
I might be able to help get you in a mag.
Custom poster size photos available. PM or email for info.
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01-18-2015, 10:08 AM
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#65
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Name: WI Huck
Title: Where does the time go?
Status: Not Here
Join Date: Feb 2008
Member`s Gallery
Posts: 371
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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.
__________________
Mark
2003 Chevrolet Duramax Pulling Truck "Never Enough"
2014 Ram 5500 4x4 Pickup
BADGER STATE TRACTOR PULLERS
HUCKSTORF DIESEL
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01-18-2015, 09:38 PM
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#66
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Name: Chris Tobin
Title: Too Much Time
Status: Not Here
Join Date: Jun 2008
Location: Dayton, TN
Member`s Gallery
Posts: 2,662
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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?
__________________
Chris Tobin
Editor--Ultimate Diesel Builder's Guide
Freelance Editor and Photographer
Working with DIESEL WORLD, DIRT SPORTS, MUSCLE CAR POWER & STREET TRUCKS magazines
tobinemail@aol.com
I might be able to help get you in a mag.
Custom poster size photos available. PM or email for info.
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01-28-2015, 06:27 AM
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#67
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Name: WI Huck
Title: Where does the time go?
Status: Not Here
Join Date: Feb 2008
Member`s Gallery
Posts: 371
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__________________
Mark
2003 Chevrolet Duramax Pulling Truck "Never Enough"
2014 Ram 5500 4x4 Pickup
BADGER STATE TRACTOR PULLERS
HUCKSTORF DIESEL
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01-28-2015, 06:45 AM
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#68
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Name: kjpcummins
Title: Too Much Time
Status: Not Here
Join Date: Feb 2009
Location: leon, ia
Member`s Gallery
Posts: 2,322
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Looks like you can run billet heads in 2.6 and 3.0 now.
__________________
1997 2500 4x4 5spd
2011 2500 4x4 6spd
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01-28-2015, 07:29 AM
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#69
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Name: jones95runner
Title: Too Much Time
Status: Not Here
Join Date: Jan 2010
Member`s Gallery
Posts: 1,432
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Quote:
Originally Posted by kjpcummins
Looks like you can run billet heads in 2.6 and 3.0 now.
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. 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.
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01-28-2015, 07:35 AM
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#70
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Name: kjpcummins
Title: Too Much Time
Status: Not Here
Join Date: Feb 2009
Location: leon, ia
Member`s Gallery
Posts: 2,322
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Quote:
Originally Posted by jones95runner
. 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.
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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.
__________________
1997 2500 4x4 5spd
2011 2500 4x4 6spd
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01-28-2015, 07:46 AM
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#71
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Name: jones95runner
Title: Too Much Time
Status: Not Here
Join Date: Jan 2010
Member`s Gallery
Posts: 1,432
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Quote:
Originally Posted by kjpcummins
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.
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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.
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01-28-2015, 08:03 AM
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#72
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Name: kjpcummins
Title: Too Much Time
Status: Not Here
Join Date: Feb 2009
Location: leon, ia
Member`s Gallery
Posts: 2,322
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How is a aftermarket cast head any different than a billet head. Its just a different process with same end result.
__________________
1997 2500 4x4 5spd
2011 2500 4x4 6spd
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01-28-2015, 08:48 AM
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#73
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Name: jones95runner
Title: Too Much Time
Status: Not Here
Join Date: Jan 2010
Member`s Gallery
Posts: 1,432
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Quote:
Originally Posted by kjpcummins
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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Not worth arguing about. Just no reason to have to buy a 10k head to compete in 2.6 or 3.0. There is a reason 10+ 3.0 trucks are for sale
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