Are they legal?

Rob Ayres · 11-08-2012, 10:02 AM

I have a question regarding legal rear ends for stockers. Since the Drag Pak Challengers and the COPO Camaros both come with a 9" Ford style rear end, is that rear end now considered "corporate" and legal for all GM and Mopar stockers? The rule book states: " Original rear end may be replaced with another from the same automobile manufacturer". I was just wondering how NHRA was defining this.

boster · 11-08-2012, 10:08 AM

Call Glendora and ask for Pat , Danny or Bruce

Billy Nees · 11-08-2012, 10:28 AM

When the CJs and DPs first came out I asked that question and was told no. Only the new cars can use those rears. But we do know how "liberal" the powers that be in Glendora have become!
As an example, in 1982-85, GM sold an over-the-counter service package rear for the Camaro that was a Dana 44 and you can't use a Dana in a Chevy.

Rob Ayres · 11-08-2012, 10:46 AM

It's mainly idle curiousity on my part. I may call Gracia this afternoon and see what he says now.

GUMP · 11-08-2012, 11:26 AM

Quote:

Originally Posted by Billy Nees

As an example, in 1982-85, GM sold an over-the-counter service package rear for the Camaro that was a Dana 44 and you can't use a Dana in a Chevy.

Didn't the 1LE cars actually have that rear installed at the factory?

Lew Silverman · 11-08-2012, 11:44 AM

And didn't they (NHRA) also disallow the use of an later model aluminum center section in the early 9" Ford rear axles?

Lew

Jeff Teuton · 11-08-2012, 12:02 PM

Mopar stuff (as far as I know). The 9" is only legal in the V10 DP. The other DP must use an 8 3/4 or Dana. They have allowed a housing that Moser makes for the DP which is a stock looking 9" that Moser machines off the front, welds a ring around it and studs it for an 8 3/4. Really nice piece. Aluminum centers for the 8 3/4 not legal per Bruce in Stock. That is FWIW (For What It's Worth for the uniformed).

jmcarter · 11-08-2012, 02:03 PM

Quote:

Originally Posted by Lew Silverman

And didn't they (NHRA) also disallow the use of an later model aluminum center section in the early 9" Ford rear axles?

Lew

Just ask "Yo Ken" about what happened to him at Gainesville last year....and NHRA even put a reminder about it shortly thereafter.

GUMP · 11-08-2012, 02:07 PM

I have also heard that you can't replace the 9" with a "corporate" rear (12 bolt into COPO, etc.). Does anyone know if that is true?

Mark Madison · 11-08-2012, 07:39 PM

Quote:

Originally Posted by Rob Ayres

I have a question regarding legal rear ends for stockers. Since the Drag Pak Challengers and the COPO Camaros both come with a 9" Ford style rear end, is that rear end now considered "corporate" and legal for all GM and Mopar stockers? The rule book states: " Original rear end may be replaced with another from the same automobile manufacturer". I was just wondering how NHRA was defining this.

I tried to get the 9" accepted using the corporate line. They didn't buy it,

Mark Madison

11-08-2012, 10:02 AM	#1
Rob Ayres Junior Member Join Date: Jun 2002 Location: Rogers, AR Posts: 32 Likes: 0 Liked 31 Times in 2 Posts	Are they legal? I have a question regarding legal rear ends for stockers. Since the Drag Pak Challengers and the COPO Camaros both come with a 9" Ford style rear end, is that rear end now considered "corporate" and legal for all GM and Mopar stockers? The rule book states: " Original rear end may be replaced with another from the same automobile manufacturer". I was just wondering how NHRA was defining this.

11-08-2012, 10:08 AM	#2
boster Senior Member Join Date: Oct 2003 Location: usa Posts: 958 Likes: 0 Liked 0 Times in 0 Posts	Re: Are they legal? Call Glendora and ask for Pat , Danny or Bruce __________________ Bo Kenney

11-08-2012, 10:28 AM	#3
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,489 Likes: 3,593 Liked 7,704 Times in 1,734 Posts	Re: Are they legal? When the CJs and DPs first came out I asked that question and was told no. Only the new cars can use those rears. But we do know how "liberal" the powers that be in Glendora have become! As an example, in 1982-85, GM sold an over-the-counter service package rear for the Camaro that was a Dana 44 and you can't use a Dana in a Chevy. __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K Last edited by Billy Nees; 11-08-2012 at 10:30 AM.

11-08-2012, 10:46 AM	#4
Rob Ayres Junior Member Join Date: Jun 2002 Location: Rogers, AR Posts: 32 Likes: 0 Liked 31 Times in 2 Posts	Re: Are they legal? It's mainly idle curiousity on my part. I may call Gracia this afternoon and see what he says now.

11-08-2012, 11:44 AM	#6
Lew Silverman VIP Member Join Date: Mar 2010 Location: Newport News, VA Posts: 1,435 Likes: 371 Liked 129 Times in 59 Posts	Re: Are they legal? And didn't they (NHRA) also disallow the use of an later model aluminum center section in the early 9" Ford rear axles? Lew __________________ Lew Silverman #2070 "The Wagon Master" N/SA

11-08-2012, 12:02 PM	#7
Jeff Teuton VIP Member Join Date: Jan 2002 Location: Houma, LA Posts: 2,717 Likes: 2 Liked 325 Times in 50 Posts	Re: Are they legal? Mopar stuff (as far as I know). The 9" is only legal in the V10 DP. The other DP must use an 8 3/4 or Dana. They have allowed a housing that Moser makes for the DP which is a stock looking 9" that Moser machines off the front, welds a ring around it and studs it for an 8 3/4. Really nice piece. Aluminum centers for the 8 3/4 not legal per Bruce in Stock. That is FWIW (For What It's Worth for the uniformed). __________________ Jeff Teuton 4022 STK

11-08-2012, 02:07 PM	#9
GUMP VIP Member Join Date: May 2002 Location: Shelby, NC Posts: 1,822 Likes: 2,166 Liked 2,348 Times in 553 Posts	Re: Are they legal? I have also heard that you can't replace the 9" with a "corporate" rear (12 bolt into COPO, etc.). Does anyone know if that is true?