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GEARS and ET.

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Old Dec 6, 2007 | 12:50 PM
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Default GEARS and ET.

Do gears help et. If you were just to do gears what type of gain can you expect in the 1/4? Also i am thinking about the 3.15`s and the 3.42`s any info would be great.....

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Old Dec 6, 2007 | 12:57 PM
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they say gears (4:10's) should/will shave three tenths of your 1/4 mile.

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Old Dec 6, 2007 | 01:02 PM
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Originally Posted by C6 DVL
they say gears (4:10's) should/will shave three tenths of your 1/4 mile.

I don't think he wants 4.10s with an A6. 3.42s would be the closest equivalent.
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Old Dec 6, 2007 | 01:03 PM
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Originally Posted by johnodrake
I don't think he wants 4.10s with an A6. 3.42s would be the closest equivalent.
yup, A6s go for 3.42s
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Old Dec 6, 2007 | 01:18 PM
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If i were to add gears (3.15/3.42) would a tranny cooler be a must? Also what would be better combo 3.15`s and a 3000 stall or 3.42`s and a 3000 stall. I am new to gears so i have lots of questions Would a converter be needed to gain the 3 tenths? Or will the converter add to the 3 tenths?

Last edited by Tony B4; Dec 6, 2007 at 01:21 PM.
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Old Dec 6, 2007 | 02:02 PM
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A 3000 stall will help a lot. Even with your stock gears you'll knock at least .3 off your ET if you launch right. A 3000 stall is enough to get your current 60' to 1.80 and bring your ET down significantly.

Tires would help a lot too. Unless your 12.52 was in the middle of summer, you have the power to get into the high 11s with a decent stall (3500) and drag radials.
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Old Dec 6, 2007 | 02:06 PM
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Originally Posted by Ragtop 99
A 3000 stall will help a lot. Even with your stock gears you'll knock at least .3 off your ET if you launch right. A 3000 stall is enough to get your current 60' to 1.80 and bring your ET down significantly.

Tires would help a lot too. Unless your 12.52 was in the middle of summer, you have the power to get into the high 11s with a decent stall (3500) and drag radials.
My 12.52 was in april, temp was low 70`s and it was on the base tires. So you would say pass up the gears and get the converter?
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Old Dec 6, 2007 | 03:00 PM
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If you get a converter, you'll probally need drs.With a converter and good drs(since you can only get them for smaller wheels, it'll effect your gearing the way you want anyways), and cooler weather, I'd say you could easily get in the 11's based on your earlier run.
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Old Dec 6, 2007 | 04:08 PM
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Originally Posted by Tony B4
So you would say pass up the gears and get the converter?
For pure performance, I'm partial to converters. However, a 3500 stall can make the car feel mushy because you need a few hundred rpm more to get the car moving at light part throttle. Some people hate this, a few people like it, and most don't mind after a week once they get use to it. A 3000 stall will have less mushiness.

Gears do not have that downside. In fact they often feel like they make the car faster than it really is. For example, Gears might know .25 off your ET, but around town it may make you feel like the car is running.5 better. That makes them a nice option for most people who enjoy a fast car but ET isn't everything. Gears can also help from a roll more than a small stall (below 3500).

Hope this helps.
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Old Dec 6, 2007 | 04:37 PM
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Originally Posted by Evilways
If you get a converter, you'll probally need drs.With a converter and good drs(since you can only get them for smaller wheels, it'll effect your gearing the way you want anyways), and cooler weather, I'd say you could easily get in the 11's based on your earlier run.
11`s is were i want to be. For the money it sounds like the converter would be the way to go. I am just wondering if the gears would give a better gain than a converter

Last edited by Tony B4; Dec 6, 2007 at 04:41 PM.
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Old Dec 6, 2007 | 04:39 PM
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Originally Posted by Ragtop 99
For pure performance, I'm partial to converters. However, a 3500 stall can make the car feel mushy because you need a few hundred rpm more to get the car moving at light part throttle. Some people hate this, a few people like it, and most don't mind after a week once they get use to it. A 3000 stall will have less mushiness.

Gears do not have that downside. In fact they often feel like they make the car faster than it really is. For example, Gears might know .25 off your ET, but around town it may make you feel like the car is running.5 better. That makes them a nice option for most people who enjoy a fast car but ET isn't everything. Gears can also help from a roll more than a small stall (below 3500).

Hope this helps.
So the gears sound like they are more fun on the street than a converter. Yes it helped ...Thanks
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Old Dec 6, 2007 | 04:48 PM
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As a manual guy I have no place posting in this thread...I've only ridden in autos.

But if you think there's any chance you'll do both then do it at the same time. You will save doing the labor of dropping the trans twice.

If I had an A6 I would do the converter. A converter makes your car really fast on the track by getting the engine in the powerband. The lower stall converters I've been in, like 3000, weren't bad. My buddy had a 3900 and it made his car unusable on the street. It felt like a slipping clutch all the time.

PM user Theofel, he's got both gears and converter in an A6, he will give his 2c as to which is better (although I think he got them both at the same time.
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Old Dec 6, 2007 | 04:49 PM
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Default 4.56 fot the M6

Im waiting for 4.56 gears to come out for the c5 -c6 vettes. Rumor
has them comming out in the spring. I think its crane they have
that mikronited process and made the claim that warren johnsons
pro stocker made 7 net HP on the dyno with less drive train loss.
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Old Dec 6, 2007 | 04:52 PM
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Originally Posted by Tony B4
Do gears help et. If you were just to do gears what type of gain can you expect in the 1/4? Also i am thinking about the 3.15`s and the 3.42`s any info would be great.....SPIN !
Tony

It is time to speak to Dennis, even though he has the A4, he has a converter/trans cooler/gears/computer setup that works...... ie 11.21 elasped times. I am sure that a similar combo with higher gears (3.15s)can be made for the A6
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Old Dec 6, 2007 | 04:58 PM
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Originally Posted by Joe_G
As a manual guy I have no place posting in this thread...I've only ridden in autos.

But if you think there's any chance you'll do both then do it at the same time. You will save doing the labor of dropping the trans twice.

If I had an A6 I would do the converter. A converter makes your car really fast on the track by getting the engine in the powerband. The lower stall converters I've been in, like 3000, weren't bad. My buddy had a 3900 and it made his car unusable on the street. It felt like a slipping clutch all the time.

PM user Theofel, he's got both gears and converter in an A6, he will give his 2c as to which is better (although I think he got them both at the same time.
Joe, any info is welcomed I know that you know your way around a track
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Old Dec 6, 2007 | 05:04 PM
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Originally Posted by Tommy D
Tony

It is time to speak to Dennis, even though he has the A4, he has a converter/trans cooler/gears/computer setup that works...... ie 11.21 elasped times. I am sure that a similar combo with higher gears (3.15s)can be made for the A6
Tommy,
I have and Dennis`s setup is just amazing...I just figured since the word that the 3.42`s came out and Dave@Cartek/Spin/and Dennis said that those gears would make for a fast Vette, just wondering if i should go gears/converter or just gears since the 3.42`s are out...Or just run the stock gears add a converter....
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Old Dec 6, 2007 | 05:10 PM
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Originally Posted by Joe_G
My buddy had a 3900 and it made his car unusable on the street. It felt like a slipping clutch all the time.

For mostly a street car, 3500 is plenty for 90% of the people. When I had a 4400 in my Z28, I had to go in and adjust my shiftpoints and lock-up to take some of the slop out. It helped, but I got tired of it and went back to a 3600. Also what feels mushy with low gears (2.56) won't feel as bad with 2.73s or 3.15s. That plays into the suggestion of doing both a converter and 3.15s and sticking some DRs out the back.
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Old Dec 6, 2007 | 05:17 PM
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Hey Ragtop,

I'm sure you don't remember me but I definitely remember you from the LS1tech forums. I have a 2001 Camaro SS with a Yank ST3500 in it. I remember you being super helpful and even sending me some PM's when I was trying to decide on a converter.

Are you moving up to a Vette soon? I am in the process of deciding what I want to order this coming spring and also need ot find a buyer for my SS - it only has around 15k miles on it so it shouldnt be too difficult.

Nice to see you here on the forum.

- Mitch
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Old Dec 6, 2007 | 06:10 PM
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(2.56)...............(3.15)............. ........(3.42)
1st 4.02............1st 4.26...................1st 4.63
2nd 2.36...........2nd 3.59...................2nd 3.90
3rd 1.53............3rd 3.37...................3rd 3.66
4th 1.15............4th 3.62...................4th 3.93
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Old Dec 6, 2007 | 07:03 PM
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Hey mitch, I have vette fever. Trying to decide if I can be happy with a 2006 or 07 or will I regret not buying an 08.

Tony: I think I understand what you are trying to do in your last post and your math is messed up for 2nd, 3rd, 4th between 2.56 and 3.15

The best way to look at gearing is to compute the effective gearing. Multiply the transmission gear times the rear axle.
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