NHRA Stock Eliminator Rear End Rules

Chad E532 · 07-18-2008, 12:55 PM

I just twisted the stock housing on my 77 Camaro 8.5" GM 10 bolt. I am thinking of going 12 bolt as a replacement rear, but someday I hope to run this car as a stocker. Reading the NHRA rule book it is not black and white on swapping rear ends. "Original rear end may be replaced with another of the same type from the automobile manufacturer". Does this mean I have to run a 8.5" 10 bolt since this was the only option for my car or can I go to another GM rear (ie 12 bolt)?
Also, does the rear housing have to be an OEM housing or could a guy use a Moser 12 bolt aftermarket (stock type) housing?
Any insight into this rule would be appreciated.
Thanks,
Chad

Dragsinger · 07-18-2008, 01:17 PM

you are fine to upgrade the rear. A GM 12 bolt is fine or Moser or Strange replacements all are legal. It just has to be a GM design.

Chris1529 · 07-18-2008, 04:53 PM

has to be same width as factory. Has to have c-clip eliminator axles.

axles can be gun drilled, flange can be scalloped, spool installed.

Chad E532 · 07-18-2008, 10:58 PM

Thanks for the insight on the rule. Looks like a 12 bolt is in my future.
Chad

Alan Roehrich · 07-19-2008, 12:30 AM

If you intend to buy a new 12 bolt, consider buying it through the Disabled Youth Awareness website. You'll get a discount, and you will help some disabled child get a chance to see the races. Everybody could use a little good Karma.

SST 3728 · 07-19-2008, 09:07 AM

I have a 12 bolt to fit your car. I did the same as you went from a 10 bolt to the 12 bolt. I had it in a 74 camaro. All of the rears form 70-81 are the same width. It has moser 33 spline axles, and spool, with ford type housing ends( because c-clip eliminator is not the way to go) with drum brakes, 4.88 pro gear, and solid pinion spacer, Also has moser aluminum bearing support cover. Give me a call if you are interested.

Alex
419-543-3315

Dave Goob Cook · 07-19-2008, 09:55 AM

Alex, would that fit a 70 Nova monoleaf setup? I may have an interested buyer.

Paul Merolla · 07-19-2008, 10:50 AM

Dave -
Too wide for a Nova...the Novas were the same width as the first-gen Camaros.

Chad E532 · 07-19-2008, 03:20 PM

Thanks for the offer Alex. I made some calls last night and have tracked down a 12 bolt locally.

07-18-2008, 12:55 PM	#1
Chad E532 Member Join Date: Jul 2008 Location: Lindstrom MN Posts: 156 Likes: 7 Liked 54 Times in 7 Posts	NHRA Stock Eliminator Rear End Rules I just twisted the stock housing on my 77 Camaro 8.5" GM 10 bolt. I am thinking of going 12 bolt as a replacement rear, but someday I hope to run this car as a stocker. Reading the NHRA rule book it is not black and white on swapping rear ends. "Original rear end may be replaced with another of the same type from the automobile manufacturer". Does this mean I have to run a 8.5" 10 bolt since this was the only option for my car or can I go to another GM rear (ie 12 bolt)? Also, does the rear housing have to be an OEM housing or could a guy use a Moser 12 bolt aftermarket (stock type) housing? Any insight into this rule would be appreciated. Thanks, Chad

07-18-2008, 01:17 PM	#2
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Re: NHRA Stock Eliminator Rear End Rules you are fine to upgrade the rear. A GM 12 bolt is fine or Moser or Strange replacements all are legal. It just has to be a GM design. __________________ Larry Woodfin 471W

07-18-2008, 04:53 PM	#3
Chris1529 VIP Member Join Date: Dec 2006 Location: West Virginia Posts: 1,366 Likes: 6 Liked 70 Times in 29 Posts	Re: NHRA Stock Eliminator Rear End Rules has to be same width as factory. Has to have c-clip eliminator axles. axles can be gun drilled, flange can be scalloped, spool installed. __________________ Chris Bowman The Mountain State Mustang 1984 Mustang GT350

07-18-2008, 10:58 PM	#4
Chad E532 Member Join Date: Jul 2008 Location: Lindstrom MN Posts: 156 Likes: 7 Liked 54 Times in 7 Posts	Re: NHRA Stock Eliminator Rear End Rules Thanks for the insight on the rule. Looks like a 12 bolt is in my future. Chad

07-19-2008, 12:30 AM	#5
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,827 Times in 414 Posts	Re: NHRA Stock Eliminator Rear End Rules If you intend to buy a new 12 bolt, consider buying it through the Disabled Youth Awareness website. You'll get a discount, and you will help some disabled child get a chance to see the races. Everybody could use a little good Karma. __________________ Alan Roehrich 212A G/S

07-19-2008, 09:07 AM	#6
SST 3728 Junior Member Join Date: May 2004 Location: Mansfield, OH Posts: 72 Likes: 0 Liked 0 Times in 0 Posts	Re: NHRA Stock Eliminator Rear End Rules I have a 12 bolt to fit your car. I did the same as you went from a 10 bolt to the 12 bolt. I had it in a 74 camaro. All of the rears form 70-81 are the same width. It has moser 33 spline axles, and spool, with ford type housing ends( because c-clip eliminator is not the way to go) with drum brakes, 4.88 pro gear, and solid pinion spacer, Also has moser aluminum bearing support cover. Give me a call if you are interested. Alex 419-543-3315 __________________ Alex Miller

07-19-2008, 09:55 AM	#7
Dave Goob Cook Member Join Date: Dec 2006 Location: Indy Posts: 422 Likes: 0 Liked 0 Times in 0 Posts	Re: NHRA Stock Eliminator Rear End Rules Alex, would that fit a 70 Nova monoleaf setup? I may have an interested buyer.

07-19-2008, 10:50 AM	#8
Paul Merolla Senior Member Join Date: Dec 2001 Location: Papillion, NE Posts: 610 Likes: 242 Liked 293 Times in 65 Posts	Re: NHRA Stock Eliminator Rear End Rules Dave - Too wide for a Nova...the Novas were the same width as the first-gen Camaros.

07-19-2008, 03:20 PM	#9
Chad E532 Member Join Date: Jul 2008 Location: Lindstrom MN Posts: 156 Likes: 7 Liked 54 Times in 7 Posts	Re: NHRA Stock Eliminator Rear End Rules Thanks for the offer Alex. I made some calls last night and have tracked down a 12 bolt locally.