81 ring and pinion replacement?
04-24-2014, 02:50 PM
#1
7th Gear
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81 ring and pinion replacement?
Looks like I need some rear end bearings replaced. Since it will already be open.......
Am looking at replacing my ring and pinion with something a little more 'torque-y". It's an original 4 speed with a 2.72 rear end. It's a daily driver, so not going to the track just want to 'chirp some brodies a little easier.'
What ratio do you all recommend?
What spline count on the pinion do I require for an aftermarket one to connect to my stock drive shaft?
Thanks.
Am looking at replacing my ring and pinion with something a little more 'torque-y". It's an original 4 speed with a 2.72 rear end. It's a daily driver, so not going to the track just want to 'chirp some brodies a little easier.'
What ratio do you all recommend?
What spline count on the pinion do I require for an aftermarket one to connect to my stock drive shaft?
Thanks.
It will make your off the line pull way faster
04-24-2014, 04:33 PM
#3
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Unfortunately, it will be doing a decent amount of highway driving.
Any input on the spline count I would need for any of the after market pinion to fit on my 81's pinion flange?
04-24-2014, 04:48 PM
#4
Le Mans Master
I would leave the 2.72s in it and swap the 4 speed to a Richmond 5 speed
04-24-2014, 07:24 PM
#6
Le Mans Master
Summit and jegs sells them. I have one in my '81. Low 1-4 gears and 1:1 5th. You get the good acceleration and your highway rpms stay the same as they are now
04-24-2014, 07:41 PM
#7
qwank...just saw the info on your 383...i'll bet your vette pulls hard and got some crazy top end...with those gears!!
04-24-2014, 09:09 PM
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04-24-2014, 10:03 PM
#9
We are talking C3 Corvettes here, unfortunately having a "cheap" mindset is not going to accomplish much. You can pay now or pay later, but you will pay.
Rebuilding a differential is going to cost $1100. Because:
a) Labor is $400 (unless you do it yourself and not many people can do this, I would advise against it unless you've done it successfully before)
b) parts are another $400 because to do it right you need to replace the bearings also
c) It will cost another $200 to rebuild the positrak, and chances are, yours will need rebuilding.
d) taxes
So, you could probably find another diff on ebay for about $1100 with a 3.55 already in it, rebuilt. Might as well buy it and be done with it and sell your as a core.
Your welcome
Rebuilding a differential is going to cost $1100. Because:
a) Labor is $400 (unless you do it yourself and not many people can do this, I would advise against it unless you've done it successfully before)
b) parts are another $400 because to do it right you need to replace the bearings also
c) It will cost another $200 to rebuild the positrak, and chances are, yours will need rebuilding.
d) taxes
So, you could probably find another diff on ebay for about $1100 with a 3.55 already in it, rebuilt. Might as well buy it and be done with it and sell your as a core.
Your welcome
04-24-2014, 10:24 PM
#10
Le Mans Master
04-24-2014, 10:57 PM
#11
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We are talking C3 Corvettes here, unfortunately having a "cheap" mindset is not going to accomplish much. You can pay now or pay later, but you will pay.
Rebuilding a differential is going to cost $1100. Because:
a) Labor is $400 (unless you do it yourself and not many people can do this, I would advise against it unless you've done it successfully before)
b) parts are another $400 because to do it right you need to replace the bearings also
c) It will cost another $200 to rebuild the positrak, and chances are, yours will need rebuilding.
d) taxes
So, you could probably find another diff on ebay for about $1100 with a 3.55 already in it, rebuilt. Might as well buy it and be done with it and sell your as a core.
Your welcome
Rebuilding a differential is going to cost $1100. Because:
a) Labor is $400 (unless you do it yourself and not many people can do this, I would advise against it unless you've done it successfully before)
b) parts are another $400 because to do it right you need to replace the bearings also
c) It will cost another $200 to rebuild the positrak, and chances are, yours will need rebuilding.
d) taxes
So, you could probably find another diff on ebay for about $1100 with a 3.55 already in it, rebuilt. Might as well buy it and be done with it and sell your as a core.
Your welcome
04-25-2014, 01:26 AM
#12
