Posi rear end
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Monte Of The Month -- October 2016
Joined: Oct 2011
Posts: 411
From: adrian,mi
thank you very much,just what i needed for future reference
http://gmheritagecenter.com/docs/gm-...onte-Carlo.pdf
here is a link to a vast amount of information on your car,
here is a link to a vast amount of information on your car,
Thread Starter
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Monte Of The Month -- October 2016
Joined: Oct 2011
Posts: 411
From: adrian,mi
its not stock but not sure what exactly is it in now due guys who changed rearend out never gave me info just that it was posi phantom lock.will have do as you stated and check for myself.all your info will definitely help,THX ALOT
Do you know what gears in it now? is it still stock? or did someone change it before you got it?
If your not sure...check the tab on the rear end..if it doesnt have a "Tab"'
Jack the rear wheels off the ground, and turn the tire 1 revolution, and count how many time the drive shaft spins around...That should give you a close idea what gears in it now.... Example: 3 and 3/4 revolutions(drive shaft) would equal a 3:73 gear....
Good luck Hope this helps!
If your not sure...check the tab on the rear end..if it doesnt have a "Tab"'
Jack the rear wheels off the ground, and turn the tire 1 revolution, and count how many time the drive shaft spins around...That should give you a close idea what gears in it now.... Example: 3 and 3/4 revolutions(drive shaft) would equal a 3:73 gear....
Good luck Hope this helps!
Thread Starter
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Monte Of The Month -- October 2016
Joined: Oct 2011
Posts: 411
From: adrian,mi
i definitely will check into that when take her out of storage.do you know about how much update will cost???
Your car would have came stock with one of 2 different gear sets either the 2.41 or 2.73
it is likely that it was the 2.41 becuase the 2.73 gearset only came in the the rpo NA6 which was a high altitude option
i personally would go with a 3.89 gear set so it's no slouch at the track yet still very streetable
also i would look for a 12 bolt from an a body, bolt in and go!
it is likely that it was the 2.41 becuase the 2.73 gearset only came in the the rpo NA6 which was a high altitude option
i personally would go with a 3.89 gear set so it's no slouch at the track yet still very streetable
also i would look for a 12 bolt from an a body, bolt in and go!
Joined: Dec 2012
Posts: 81
From: Apple Grove, WV
If I were you I'd be goin nuts trying to pick between 3.55 or 3.73. Your cars set up almost exactly like mine (sbc and TH 350) and I'm running 3.73's in my car. It did really good on acceleration (before the motor died) and it had a 305 in it, but gas mileage sucked and interstate travel is out of the question. With the added horsepower you have over my 305 I would go with the 3.55's. You still got the beefiness of a lower gear but its high enough to go 55mph without running 3500 rpms.
Thread Starter
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Monte Of The Month -- October 2016
Joined: Oct 2011
Posts: 411
From: adrian,mi
thx for info,first thing i have to do is find out what the guys who did rearend work put in it.I was wanting to go with 3.73
If I were you I'd be goin nuts trying to pick between 3.55 or 3.73. Your cars set up almost exactly like mine (sbc and TH 350) and I'm running 3.73's in my car. It did really good on acceleration (before the motor died) and it had a 305 in it, but gas mileage sucked and interstate travel is out of the question. With the added horsepower you have over my 305 I would go with the 3.55's. You still got the beefiness of a lower gear but its high enough to go 55mph without running 3500 rpms.
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