what gears do i have?
what gears do i have? 98 w/ a4 trans.
the code on the door says it should have 2.73's (gu2) but my mechanic that inspected it said the rear said 3.23 on it in paint marker (like from a junkyard). i just bought this car btw and have no idea of it's history besides carfax which doesn't tell you ****.
anyway- 1st gear goes to about 50mph and 2nd till about 90mph. seems LONG as hell to me so im guessing 2.73's but i don't know. it pulls good but it has some flat spots in the power curve. (pulls sick for a stock car though)
any help is appreciated.
the code on the door says it should have 2.73's (gu2) but my mechanic that inspected it said the rear said 3.23 on it in paint marker (like from a junkyard). i just bought this car btw and have no idea of it's history besides carfax which doesn't tell you ****.
anyway- 1st gear goes to about 50mph and 2nd till about 90mph. seems LONG as hell to me so im guessing 2.73's but i don't know. it pulls good but it has some flat spots in the power curve. (pulls sick for a stock car though)
any help is appreciated.
Originally Posted by sleeperstyle
98 w/ a4 trans.
the code on the door says it should have 2.73's (gu2) but my mechanic that inspected it said the rear said 3.23 on it in paint marker (like from a junkyard). i just bought this car btw and have no idea of it's history besides carfax which doesn't tell you ****.
anyway- 1st gear goes to about 50mph and 2nd till about 90mph. seems LONG as hell to me so im guessing 2.73's but i don't know. it pulls good but it has some flat spots in the power curve. (pulls sick for a stock car though)
any help is appreciated.
the code on the door says it should have 2.73's (gu2) but my mechanic that inspected it said the rear said 3.23 on it in paint marker (like from a junkyard). i just bought this car btw and have no idea of it's history besides carfax which doesn't tell you ****.
anyway- 1st gear goes to about 50mph and 2nd till about 90mph. seems LONG as hell to me so im guessing 2.73's but i don't know. it pulls good but it has some flat spots in the power curve. (pulls sick for a stock car though)
any help is appreciated.
As far as the ratio, don't trust a code or a lable. I suggest you check it yourself:
Block the front tires, jack up the car by the rear end, put the trans in neutral (take off the parking brake!) and rotate the tire one revolution while counting the number of turns of the driveshaft.
Less than 3 = 2.73
Just more than 3 = 3.23
Almost 3.5 = 3.42
More than 3.5 = 3.73
I hope that helps.
Though I agree with poweredbyv8, since there is no beating the math:
41/12 = 3.4166666
However, if you don't want to remove the cover, catch all that horrible smelling gear lub, replace the gasket and the gear lube just to count the teeth, then my way works just fine.
I have the GU6 code on my door, and the driveshaft rotated just under 3.5 times with 1 rotation of the rear tire. So, 3.42's it is!!
41/12 = 3.4166666
However, if you don't want to remove the cover, catch all that horrible smelling gear lub, replace the gasket and the gear lube just to count the teeth, then my way works just fine.
I have the GU6 code on my door, and the driveshaft rotated just under 3.5 times with 1 rotation of the rear tire. So, 3.42's it is!!
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f-it, im sure the rear lube' could use a change anyway. im just really curious because if it has 2.73s' i may only go up to 3.23's but if it already has 3.23's... well, you get the picture. also like i said i don't think the driveshaft method will work because it looks like somebody was already down there ******* with stuff- who knows what was or wasn't replaced.
thanks for the replies. i REALLY don't see how 3.23's can go till like 92mph in 2nd gear at 6k rpms- these gears kind of suck because im crossing the traps just as i hit 3rd gear (flat spot at 3k rpm's). i can brake torque up to 1500rpms and pound it at the line and get minimal wheel spin?? yeah- ill check it out but they have to be 2.73's..
thanks for the replies. i REALLY don't see how 3.23's can go till like 92mph in 2nd gear at 6k rpms- these gears kind of suck because im crossing the traps just as i hit 3rd gear (flat spot at 3k rpm's). i can brake torque up to 1500rpms and pound it at the line and get minimal wheel spin?? yeah- ill check it out but they have to be 2.73's..
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Launching!
Joined: Nov 2001
Posts: 219
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From: Westminster, CO
http://www.f-body.org/gears/ Is a great place to look at speeds. Looks like with 3.23's 1st gear should go to around 50 and 2nd to around 90. 2.73's would go to almost 60 and just over 105.
Originally Posted by FastAl
http://www.f-body.org/gears/ Is a great place to look at speeds. Looks like with 3.23's 1st gear should go to around 50 and 2nd to around 90. 2.73's would go to almost 60 and just over 105.
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by FastAl
http://www.f-body.org/gears/ Is a great place to look at speeds. Looks like with 3.23's 1st gear should go to around 50 and 2nd to around 90. 2.73's would go to almost 60 and just over 105.
According to that site, I have 3.73s from the factory. Is this possible? I did buy the car with 15k miles also but the car didnt have any mods (not even a lid)
Originally Posted by 2MuchRiceMakesMeSick
According to that site, I have 3.73s from the factory. Is this possible? I did buy the car with 15k miles also but the car didnt have any mods (not even a lid)
Last edited by Keenov; Jul 13, 2004 at 12:42 PM.
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Joined: Jan 2004
Posts: 351
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From: In the Keebler elves freg'n tree house eating freg'n cookies
Originally Posted by 2MuchRiceMakesMeSick
According to that site, I have 3.73s from the factory. Is this possible? I did buy the car with 15k miles also but the car didnt have any mods (not even a lid)
I dont think our cars came stock with that. That statement just places doubt Sleeper's head. Crack it open, otherwise you wont know if its the 2.73s or a doughnut and an icecream cone.
Originally Posted by xxtinktFormula
I dont think our cars came stock with that. That statement just places doubt Sleeper's head. Crack it open, otherwise you wont know if its the 2.73s or a doughnut and an icecream cone.
Last edited by sleeperstyle; Jul 13, 2004 at 11:42 PM.
These are stock WOT shift points from HPTuners bin files of cars with 2.73s and 3.23s.
2.73:
1->2 - 44 mph - 6000 rpm
2->3 - 90 mph - 6000 rpm
3.23:
1->2 - 37 mph - 6000 rpm
2->3 - 76 mph - 6000 rpm
2.73:
1->2 - 44 mph - 6000 rpm
2->3 - 90 mph - 6000 rpm
3.23:
1->2 - 37 mph - 6000 rpm
2->3 - 76 mph - 6000 rpm
Originally Posted by 2xLS1
These are stock WOT shift points from HPTuners bin files of cars with 2.73s and 3.23s.
2.73:
1->2 - 44 mph - 6000 rpm
2->3 - 90 mph - 6000 rpm
3.23:
1->2 - 37 mph - 6000 rpm
2->3 - 76 mph - 6000 rpm
2.73:
1->2 - 44 mph - 6000 rpm
2->3 - 90 mph - 6000 rpm
3.23:
1->2 - 37 mph - 6000 rpm
2->3 - 76 mph - 6000 rpm
i am surprised more people did not know this (the mph's for the 2 different stock a4 gears). well- now i know...
Originally Posted by sleeperstyle
this is absolutly correct. just to update this post- i went under the car and checked via the driveshaft counting method and i have 2.73's.
.