gears
02-02-2007, 11:57 PM
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gears i was wondering what size gear i would have in my 1999 trans am a4. i had someone tell me a 2.73:1 
but i find that hard to believe seeing as its a performance car. any help would be great. thanks.
but i find that hard to believe seeing as its a performance car. any help would be great. thanks. 
02-03-2007, 10:43 AM
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A lot of auto cars come with either the 2.73's or 3.23s M6 Cars usually come with GU6 3.42 Gears. My 2002 SS a4 came with 3.23 and my friends 2002 Z-28 came with 2.73 Like Blk97WS6 said just check the RPO code on the door jam and see what gear ratio you have. You should have one of those codes and those are the gears your car came with unless of course somebody else already installed different gears if thats so thats a plus for you!!! >: )
02-03-2007, 12:48 PM
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Originally Posted by prietodogg
A lot of auto cars come with either the 2.73's or 3.23s)
Originally Posted by prietodogg
M6 Cars usually come with GU6 3.42 Gears.
Like everyone else said all ready, open your drivers door and look at the RPO code sticker.
GU2 = 2.73 and GU5= 3.23's. Either way an upgrade to 3.42's or 3.73's isn't a bad thing
02-04-2007, 12:12 AM
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3:42's or 3:73's would be a great upgrade for you. For performance reasons I would go with the 3:73's but if you do a lot of highway driving 3:42's might be better for you. Which ever route you chose to take just make sure you get the car retuned after the install because it is important or the odometer reading.
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02-10-2007, 02:12 PM
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Originally Posted by GregD63
Is there anything else that I should consider doing now? Doing all of this is going to strain my budget as it is. I don't want to do anything to the engine right now. I need to get to the point where I am getting the power I already have to the ground as good as I can. It went 13.30's with the drag radials and the 3.73, but had a lot of wheel hop.
I would appreciate any ideas. Thanks.
I would appreciate any ideas. Thanks.
And I have stock suspension and stock 3.23's.
02-10-2007, 05:39 PM
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programmer
Originally Posted by GregD63
I have a 99 T/A with an A4. It has the 2.73 gears. I had a 3.73 put in but I did not like it, so it came back out. It was a Richmond gear and made noise. The transmission also shifted out too quick driving on the street. I have a 3-series Torsen and a 3.42 from a wrecked car to install now. I think part of the drivability problem with the 3.73 gear was the converter. I am going to get a new converter. I have had good luck with TCI's in other cars, so I will probably get one of those. I am going to add the subframe connectors and change the torque arm as well. I already have the control arms. LG Motorsports has a X-Brace that works with the subframe connectors to further stiffen the car. I am thinking that I will install this also. I already have drag radials, a 160 thermostat, and a programmer. I also cut out the bottom of the air box.
Is there anything else that I should consider doing now? Doing all of this is going to strain my budget as it is. I don't want to do anything to the engine right now. I need to get to the point where I am getting the power I already have to the ground as good as I can. It went 13.30's with the drag radials and the 3.73, but had a lot of wheel hop.
I would appreciate any ideas. Thanks.
Is there anything else that I should consider doing now? Doing all of this is going to strain my budget as it is. I don't want to do anything to the engine right now. I need to get to the point where I am getting the power I already have to the ground as good as I can. It went 13.30's with the drag radials and the 3.73, but had a lot of wheel hop.
I would appreciate any ideas. Thanks.
