DP rear axle assembly

Dan Wilson · 08-09-2013, 05:12 PM

The upgrade is for the 2009 or2010 not for the 2011 is what I was told.
Dan

MPR · 08-09-2013, 07:17 PM

The NHRA rule book in Stock states; "Original rear end may be replaced with another from the same automobile manufacturer; truck rear end prohibited."

2009 and 2010 Drag Pak Challengers originally came with NO rear end so a racer of one of these cars isn't replacing the original rear end, simply installing it. The only rear end this automobile manufacturer ever spec'ed for a Drag Pak Challenger is in the Mopar parts system listed as part number P5155850.

Automobile manufacturers purchase most axle assemblies from suppliers like AAM and Dana. Mopar contracted Dana to build a Dana 60 for automobile use (NHRA prohibits the use of truck rear ends) and this was some 45 years ago. Mopar put a part number on it and used it in their muscle cars for a few years making it legal for use in NHRA Stock. Mopar never owned Dana Corp. and didn't manufacture the axle they just bought special Dana 60 rear axles from Dana and assigned a part number to it thus making it legal by NHRA.

Mopar part number P5155850 is the only part number Mopar list as a rear end for a Drag Pak. It is manufactured by an aftermarket automotive supplier and is in fact the original rear end spec'ed for a Drag Pak since NO rear end came in a 2009 or 2010 Drag Pak from Dodge. It is BTW the very same Strange Nine used in all of the factory hotrods being built today. Cobra Jet Mustang, COPO Camaro and yes, Drag Pak Challenger.

The P5155850 was put into the Mopar parts system in 2010 and anyone can check with Mopar or online to verify the info above. This Strange Nine rear axle has been approved by the NHRA for all 3 brands factory race cars. This is obvious when reading the 3rd paragraph in section 8-Stock in the NHRA Rule Book. "OEM may apply for inclusion of any special production runs into the Official NHRA Stock Car Classification Guide." If the NHRA didn't approve it then how did the Drag Pak make it into the Classification Guide? Call it a Nine Inch, call it an 8 & 4 quarters or call it a P5155850. I sure hope this clears things up!

Mack Reeves · 08-17-2013, 10:26 AM

Quote:

Originally Posted by Dan Wilson

The upgrade is for the 2009 or2010 not for the 2011 is what I was told.
Dan

Dan look in the Stock Car guide... Now the 426 is in the 2009's and 2010's... Not the 2011... They have changed their minds so many times.... I'm not sure what we have.... But I do know the 9" is legal with the 426.... So I think you are right.....

Stewart Way · 08-17-2013, 11:45 AM

Mack
But if you look in the engine blueprint section the 426 is only in 2011, not 09 and 10. And its yellow highlighted in the 2011 like it is a recent change. Who knows?

Mack Reeves · 08-17-2013, 01:04 PM

Quote:

Originally Posted by Stewart Way

Mack
But if you look in the engine blueprint section the 426 is only in 2011, not 09 and 10. And its yellow highlighted in the 2011 like it is a recent change. Who knows?

Stewart, I looked this morning and it wasn't in the 2011 but it was in both the 2009 and 2010???? So who knows???? Stewart, I'm looking in the Stock Car Classification Guide.... The 426 is in both the 2009 and 2010 in Yellow and a note that says 8-15-13??

Stewart Way · 08-17-2013, 03:01 PM

Mack
Your right. For some reason they have made changes so the class guide and engine spec guide are opposite on the 426.

Andys dad · 08-17-2013, 03:04 PM

Quote:

Originally Posted by Mack Reeves

Stewart, I looked this morning and it wasn't in the 2011 but it was in both the 2009 and 2010???? So who knows???? Stewart, I'm looking in the Stock Car Classification Guide.... The 426 is in both the 2009 and 2010 in Yellow and a note that says 8-15-13??

I mentioned earlier - it was the hood

2011 only had flat hood

2009-2010 had the scoop

Ron

Mack Reeves · 08-17-2013, 06:57 PM

Quote:

Originally Posted by Andys dad

I mentioned earlier - it was the hood

2011 only had flat hood

2009-2010 had the scoop

Ron

You are right there Ron.... But also the 09's and 10's had the v-8's and the 2011 had the V-10's... No V-8's in 2011.... Who knows... I have been told so many things since this started.... Guess we'll have to wait until Indy and just see.....

Dan Wilson · 08-18-2013, 09:24 PM

The 426 is a upgrade of the 2009-2010 to a 2011 is what I was told , but now I am confused as is others. It is entered as a 2009 - 426. We started it up today and everything seems good except the windows stoped working . I guess they are not 426 compatible. Now we have to get them working. Will they not work with 16 volt? I converted it from 12v to 16v and they stopped working.

The 426 sounds real good.

Dan

08-09-2013, 05:12 PM	#1
Dan Wilson Junior Member Join Date: Apr 2010 Posts: 60 Likes: 0 Liked 0 Times in 0 Posts	Re: DP rear axle assembly The upgrade is for the 2009 or2010 not for the 2011 is what I was told. Dan __________________ Dan Wilson, STK3171, K/SA

08-09-2013, 07:17 PM	#2
MPR Junior Member Join Date: Sep 2002 Posts: 48 Likes: 0 Liked 23 Times in 8 Posts	Re: DP rear axle assembly The NHRA rule book in Stock states; "Original rear end may be replaced with another from the same automobile manufacturer; truck rear end prohibited." 2009 and 2010 Drag Pak Challengers originally came with NO rear end so a racer of one of these cars isn't replacing the original rear end, simply installing it. The only rear end this automobile manufacturer ever spec'ed for a Drag Pak Challenger is in the Mopar parts system listed as part number P5155850. Automobile manufacturers purchase most axle assemblies from suppliers like AAM and Dana. Mopar contracted Dana to build a Dana 60 for automobile use (NHRA prohibits the use of truck rear ends) and this was some 45 years ago. Mopar put a part number on it and used it in their muscle cars for a few years making it legal for use in NHRA Stock. Mopar never owned Dana Corp. and didn't manufacture the axle they just bought special Dana 60 rear axles from Dana and assigned a part number to it thus making it legal by NHRA. Mopar part number P5155850 is the only part number Mopar list as a rear end for a Drag Pak. It is manufactured by an aftermarket automotive supplier and is in fact the original rear end spec'ed for a Drag Pak since NO rear end came in a 2009 or 2010 Drag Pak from Dodge. It is BTW the very same Strange Nine used in all of the factory hotrods being built today. Cobra Jet Mustang, COPO Camaro and yes, Drag Pak Challenger. The P5155850 was put into the Mopar parts system in 2010 and anyone can check with Mopar or online to verify the info above. This Strange Nine rear axle has been approved by the NHRA for all 3 brands factory race cars. This is obvious when reading the 3rd paragraph in section 8-Stock in the NHRA Rule Book. "OEM may apply for inclusion of any special production runs into the Official NHRA Stock Car Classification Guide." If the NHRA didn't approve it then how did the Drag Pak make it into the Classification Guide? Call it a Nine Inch, call it an 8 & 4 quarters or call it a P5155850. I sure hope this clears things up!

08-17-2013, 11:45 AM	#4
Stewart Way Member Join Date: Aug 2003 Location: Atlanta Posts: 476 Likes: 20 Liked 70 Times in 22 Posts	Re: DP rear axle assembly Mack But if you look in the engine blueprint section the 426 is only in 2011, not 09 and 10. And its yellow highlighted in the 2011 like it is a recent change. Who knows? __________________ Stewart Way 2424 SS

08-17-2013, 03:01 PM	#6
Stewart Way Member Join Date: Aug 2003 Location: Atlanta Posts: 476 Likes: 20 Liked 70 Times in 22 Posts	Re: DP rear axle assembly Mack Your right. For some reason they have made changes so the class guide and engine spec guide are opposite on the 426. __________________ Stewart Way 2424 SS

08-18-2013, 09:24 PM	#9
Dan Wilson Junior Member Join Date: Apr 2010 Posts: 60 Likes: 0 Liked 0 Times in 0 Posts	Re: DP rear axle assembly The 426 is a upgrade of the 2009-2010 to a 2011 is what I was told , but now I am confused as is others. It is entered as a 2009 - 426. We started it up today and everything seems good except the windows stoped working . I guess they are not 426 compatible. Now we have to get them working. Will they not work with 16 volt? I converted it from 12v to 16v and they stopped working. The 426 sounds real good. Dan __________________ Dan Wilson, STK3171, K/SA