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Old Dec 18, 2004 | 09:18 PM
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Well my RPO code is GU2, which equals 2.73 gears supposedly, but i have a first gear option in my automatic, which I have read and heard that GM did NOT put a first gear option with there 2.73 gears. And floored from a stop I spin all the way through first gear and half of second. I have 245/50 R16's Maybe some advice? I am also planning on putting headers on as well, maybe some good advice here too? Im going with the true duals setup/xpipe/bullets-dumped. And I am also getting an MTI or SLP air lid. With my 98 A4,...approximately what should I be running in the qtr mile and what horsepower should i be pushing? THANKS IN ADVANCE.
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Old Dec 18, 2004 | 09:41 PM
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Purchase some Nitto 555 Extreme Drag radial tires for the rear. That should help hook you up. Just be careful on cold roads and wet roads....
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Old Dec 19, 2004 | 05:46 AM
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by "first gear option" do you mean manually put the shifter into 1st gear, ive got an A4 with 2.73 and can do it, and i remember reading somthing in JRP's FAQ about when they started leting us do that
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Old Dec 19, 2004 | 08:24 AM
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Ok thanks, so that manually shifting into 1st with the auto/2.73 gears must've started in 97 or 98 im guessing. ANd im not sure i want to go out with drag radials just yet, whats some decent suspension that I can put on that will help me take off without so much spin.
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Old Dec 19, 2004 | 04:52 PM
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i havent got any suspension work yet, but im looking into BMR and QA1, and ive been to the track a few times, with 2.73s you wont see much wheel spin so dont worry about drag radials yet
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Old Dec 23, 2004 | 11:39 PM
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Would my 98 trans am have 3.23's or 2.73? I go to the track and get major wheel spin on new bf goodrich tires...
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Old Dec 23, 2004 | 11:50 PM
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check your RPO code, i got 2.73 (GU2) and have G-Force KDWS and get no wheel spin at the track at all, if you have the GU5 you have the 3.23, or if you have a M6(which i noticed you dont),or when the car was ordered, it was ordered with GU6 then you have 3.42 and if you have a 3.42 i believe you also have an aluminum driveshaft, and if you didnt know where the RPO label is, its in the driverside doorjam stuck to the door itself

Last edited by LiquidFire350; Dec 24, 2004 at 06:48 AM.
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Old Dec 23, 2004 | 11:52 PM
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also if your label is torn up or missing, you can use one of these calulators, ive tryed it before, its not perfect but close enough to let you know what gear you have https://ls1tech.com/forums/showpost....1&postcount=13
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