Rear Pinion alignment

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magikstik
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Rear Pinion alignment

#1 Post by magikstik » Wed Jun 08, 2011 7:00 am

Hi guys/ and gals... I am new here, and hope to be here a long time.. I have a question, which many here may seeme somewhat elementary..... I think my rear was cut incorrectly... When installing a narrowed rear with an offset pinion, do you center the chunk, or the pinion? Any info will be greatly appreciated...


Thanks!!
Chad :mrgreen:

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supernova
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Location: Ft.Worth Tx

Re: Rear Pinion alignment

#2 Post by supernova » Wed Jun 08, 2011 8:02 am

I've seen it done both ways and don't think it matters unless you have a chassis car.

I centered mine.

Welcome to drag stuff. Nova or Camaro? Please let it be a Nova!!!!!
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

magikstik
Posts: 3
Joined: Tue Jun 07, 2011 10:11 pm

Re: Rear Pinion alignment

#3 Post by magikstik » Wed Jun 08, 2011 8:26 am

Ha Ha.... well its my girfriend who races, she has two camaro's and a corvette.... Personally, I do like the Nova's a lot.. Which did you center? Pinion or chunk??

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supernova
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Re: Rear Pinion alignment

#4 Post by supernova » Wed Jun 08, 2011 10:30 am

Pinion. Sorry I left that out. :oops:

We have a Nova, Camaro rivalry hare on DragStuff that the Nova's are winning but the Camaro's are catching up fast. Now that's not to say that Camaro's are fast or anything like that. :mrgreen: :mrgreen: :mrgreen: :mrgreen: LOL Just saying.
Last edited by supernova on Wed Jun 08, 2011 11:32 am, edited 1 time in total.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

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wikd69
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Location: Rocklin, CA
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Re: Rear Pinion alignment

#5 Post by wikd69 » Wed Jun 08, 2011 11:17 am

supernova wrote:Pinion. Sorry I left that out. :oops:

We have a Nova, Camaro rivalry hare on DragStuff that the Nova's are winning but the Camaro's are catching up fast. Now that's not to say that Camaro's are fast or anything like that. :mrgreen: :mrgreen: :mrgreen: :mrgreen: LOL Just say.
keep talking texas boy...
1969 ProStreet Camaro RS Best 9.75@139 1.46 60'
Blown 427 BBC, TH400 w/Brake, Back-Half Ladderbar
Narrowed 12-Bolt, 4.10 Gears, Spool, Moser 33 Spline

http://www.marsh-racing.com/harrys_camaro-1.htm

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BracketNova
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Re: Rear Pinion alignment

#6 Post by BracketNova » Wed Jun 08, 2011 9:47 pm

Does there seem to be a problem here? :gundown:

More on topic...my pinion is centered.
"I always compare drag racing to lighting $100 bills on fire, only it's more expensive." - Craig W.

Check out my website...
http://www.findmoneyraces.com


'71 Nova E85
6.69 @ 100.2 MPH 9/6/14
1.4257 60'
1700' DA

13:1 439 BBC
3330 lbs

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chpcamaro
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Re: Rear Pinion alignment

#7 Post by chpcamaro » Wed Jun 08, 2011 9:48 pm

did i hear someone say camaro lol

oh yea mine is centered pinon that is
best to date N/A 8.91@153
psca westcoast heads up racing open comp
67 Camaro RS/SS
BBC Powerglide 4800 stall 4.11 29.5x10.5W
http://www.chpdragracing.com

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wikd69
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Re: Rear Pinion alignment

#8 Post by wikd69 » Thu Jun 09, 2011 12:07 am

My pinion is offset 3/4" to the right...
1969 ProStreet Camaro RS Best 9.75@139 1.46 60'
Blown 427 BBC, TH400 w/Brake, Back-Half Ladderbar
Narrowed 12-Bolt, 4.10 Gears, Spool, Moser 33 Spline

http://www.marsh-racing.com/harrys_camaro-1.htm

magikstik
Posts: 3
Joined: Tue Jun 07, 2011 10:11 pm

Re: Rear Pinion alignment

#9 Post by magikstik » Thu Jun 09, 2011 7:22 am

Well guys thanks so much for the info!! We are encountering more problems than we expected..... What a mess!! The rear is a 8 3/4 Chrysler, which was in the car when she got it, and was already narrowed. The pinion is 2 1/2" offset, and the tubes are the same length, making the pinion 17 1/4" from backing plate to center of pinion on Right side. It is 19 3/4" from backing plate to center of pinion on Left side.. :o :o :o We cannot shorten the axle any more due to tub size... The 4 link brackets have the pinion center, so it throws the entire axle off to the Left side!! :shock: :shock: What A MESS!!! It is totally amazing, because she was running 6.20 to 6.50 with the rear toatally screwed up and out of square rear end!!!!! Unreal!!

What do you guys think is our best out?? New rear, or move the 4-link brackets so that the pinion can be as center as possible with an offset rim??? If the tubs allow!!????

Or Should she trade in for Nova??!!!! LOL :lol: :lol:

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supernova
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Re: Rear Pinion alignment

#10 Post by supernova » Thu Jun 09, 2011 9:10 am

If I'm not mistaken you can have that rear end re-tubed and cut to the right length. Than all you would be out is a new set of axles. Call a drive line shop and see if that's the case. It will cost less and you won't have to relocate the 4 link brackets.

If not than I would get a new housing cut to your spec's and be done with it.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

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BracketNova
Posts: 618
Joined: Sat Apr 25, 2009 6:46 pm
Contact:

Re: Rear Pinion alignment

#11 Post by BracketNova » Thu Jun 09, 2011 9:40 pm

Can you have he longer tube and axle cut down, slide the axle over and be done with it? I wouldn't think it would be too expensive to cut the end off the tube, cut the tube down a bit and weld the end back on...lop some off the end of the axle and move your link mounts???
"I always compare drag racing to lighting $100 bills on fire, only it's more expensive." - Craig W.

Check out my website...
http://www.findmoneyraces.com


'71 Nova E85
6.69 @ 100.2 MPH 9/6/14
1.4257 60'
1700' DA

13:1 439 BBC
3330 lbs

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