Pro Stock John

iTrader: (34)

Some V6's have had 3.08s too. My buddy Keith might have his lying around (magnus_dx@hotmail.com)

I would want to stay with a 3 series gear.

I liked my old 3.50 gears quite a bit.

My current 4.10's make my car an animal in all gears all the time. But I have been leaving the ET Streets on 24-7.

[ December 27, 2001: Message edited by: Pro Stock John ]</p>

Patrick G

iTrader: (14)

PSJ,

I hear you man. ET Street 24-7 doesn't work for a true daily driver. I drive a lot in the rain and I feel like I'm pushing it at times with these Nittos but they're the best thing I can find for the street. Remember, I drive about 1500-2000 miles a month. Street manners is a huge concern.

DV8

iTrader: (6)

Aside from the great mpg, your car would also be an awesome top speed machine with 2.73's and nitrous. You probably wouldn't shift into 4th until way after the century mark of the speedo.

3.23's are also a good gear. Although I've never seen any run on nitrous, I've seen what they can do with and without a converter. Seems to be a good middle ground between the 3.73's and 2.73's. Running that high of a stall might allow the Nitto's to hold on the street.

Would running a higher stall help you out for N/A runs, or would it not really make a difference? Teach this M6 guy a thing or two about A4's. <img src="images/icons/confused.gif" border="0">

It sounds like genius for a FI/Nitrous car.
<img src="graemlins/gr_hail.gif" border="0" alt="[hail]" />

2000LS1Z28

Traction wouldn't be as bad on the streets(especially down-low) and if you don't mind losing a little time(1-2 tenths) off the bottle at the track then I say go for it. To me there are more advantages to 2.73's with your set-up than 3.73's going by what you have been saying.

Mike

Supertrapped

Patrick....I have the ST3500 and am still runnin my 2:73 gears <img src="gr_stretch.gif" border="0">

Pro Stock John

iTrader: (34)

If I was daily-driving the ET Streets would be off for sure, I have been caught twice in rain.

Back when I first did heads and cam, and exhaust, my car had the stock 'verter in it and 2.73's... The car had ridiculous topend. I raced a Mystic Cobra from a 75mph... Left him behind and I did 165mph and still had more left.

My gas mileage with my setup is very bad. I once filled it up on a Saturday and needed gas the next day.

RPM WS6

iTrader: (3)

[quote]Originally posted by Pro Stock John:
<strong>My gas mileage with my setup is very bad. I once filled it up on a Saturday and needed gas the next day.</strong><hr></blockquote>

That’s pretty bad. <img src="gr_eek2.gif" border="0">

I once used half a tank of gas in 65 miles doing nothing but WOT runs to log a-tap data <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />
That was on a stock motor too... <img src="graemlins/gr_devil.gif" border="0" alt="[devil]" />

WILWAXU

iTrader: (6)

Why not have Mike build you a PY-3600 with a smaller STR... something like my old SY.. 1.86?

Leon

Patrick

Everything you say makes sense. I have thought about it a lot myself. The only trade off would be in the the quarter mile with nitrous because 3rd gear would be a little weak. 3.23 would be perfect.

what i really want is a lockup t400 with 3.06 first gear. with 2.73 overdrive is not necessary and would rather have a stronger tranny.

Terry Burger

iTrader: (4)

I think the hot ticket would be a 3.06 1st gear TH350 with a LS1 lockup converter, and 2.73 or 3.23 gearing.

02 SOM WS6

Patrick, I still have the 2.73's and carrier that came out of my Z28. You can have them if you want them or need them. They probably only have about 12-15000 miles on them.

Les

just me

Patrick, I could not have listed the reasons why I personally have decided to use the 2.73 gears any better!

Having personally swapped back and forth between 3.73 and 2.73 3 times (and once I swapped in 3.73 and took them right back out the very same day as they were to noisy for my tastes <img src="gr_eek2.gif" border="0"> ), I have a pretty good feel for the real world differences.

First of all the strength. No comparison. 2.73 have a Gigantic 15 tooth pinion that has a great deal of tooth contact at any given time.
Strongest gears you can use in the 10 bolt.

Plus they are silent. Mine have never made a peep after years of nitrous runs and latley big blown HP.

Peformance.. passing gears are killer and track times with a power adder are the equal to 3.73 through the 1/8th.

They actually seem to perform better as you don't hit the tires as hard off the line so a marginal suspension or poor track is easier to launch from.
I have gone over 100mph in the 1/8th with the 2.73 gears.
You lose some trap speed but not much ET as ET is made mainly from launch to 1/8th.
On the street the 3.73 make the car feel more responsive.But at my power level it's a joke as even with 2.73 1st gear is totally useless.
3.73 would just help blow the motor from revving to fast from tire spin.
With any poweradder, the 2.73 + decent converter combo is killer.
I have had guys come up after wathcing me pull 100+mph through the 1/8th while still blowing off the tires asking if I had 4.10's,lol!
With a poweradder and the tall gearing, the converter flashes way up.So you can run a fairly tight converter day to day but still get great launches and good top end efficiency.
The 4l60e shifts much more consistant with 2.73 and I happen to believe the 1-2 shift is much stronger than the 2-3 shift.
So most of the time on the street you will only use the 1-2 shift at wot(unless you regularly exceed 100mph) and that saves your 2-3 shifting power.
My 98 trans still shifts great.

I think it is a good choice for a street poweradder car for all the reasons above.

Steve
www.tech-ls1.com

[ December 27, 2001: Message edited by: just me ]</p>

Patrick G

iTrader: (14)

WILWAXU,

I need to keep a converter with a really high STR when running 2.73 gears vs. keeping 3.73 gears and running a low STR converter.

If I were running the spray 100% of the time at the track, my best choice would be the Pro Yank 3400 Extreme...tons of holding capacity and the most driveable of Yank Converters. This converter would not be near as quick on motor as my ST 3500 converter, so I'll probably stick with it for now.

02 SOM WS6,

Thanks for the offer of free gears. I may take you up on it! <img src="gr_grin.gif" border="0">

Just Me:

Thanks for confirming what I was already thinking. The strength of 2.73s along with the great usable 1st and 2nd gear make them a natural on the street (and at the track with a power adder).

Pro Stock John

iTrader: (34)

I won't deny that my car for example epitomizes a drag car... 4400 stall and a 4.10 gear. I can brake the tires loose up to 80mph on radial tires. I can give my car very little pedal input and go 130mph. But the car is also kind of dangerous and a gass guzzler.

Those 3.08 gears I mentioned I think I would be cool.

XLR8NSS

iTrader: (4)

Man, now you guys got me thinking again.

I can see it now. I call up my mechanic.

Me: I just blew my rear gears and I want to change them out.
Mech: Oh yeah, what did you have in there.
Me: 3.23's
Mech: Are you going to go with a shorter gear or stay with the 3.23's
Me: Well, actually I'm going with a 2.73.
Mech: WHAAAAAAT! Are you crazy!

<img src="gr_grin.gif" border="0">

WILWAXU

iTrader: (6)

Ummm, I think you totally missed my point. Keep the 3.73's go with PY-3600E with a lower STR.

BYBYC5

i am doing just that, 150-200 shot with mods in sig, and 2800tc,2.73s, its a killer set up.i dont have the motives installed yet cuz i like the 2.73 so much

[ December 27, 2001: Message edited by: Grinch(supra killa) ]</p>

Terry Burger

iTrader: (4)

Kevin mail me that HPP. <img src="gr_images/icons/wink.gif" border="0">

Patrick G

iTrader: (14)

WILWAXU (John),

I hear what you're saying. A lower STR converter would allow me to hook up a little better with 3.73 gears, but I would still lose most of the benefits a 2.73 gear would give me (strength, usable 1st gear, great fuel economy). Granted, a low STR converter with 3.73 gears would probably have better street manners than a high STR converter with 2.73 gears...I just like the snappier throttle "tip-in" the high STR converters give...it's just a personal preference.

A Super Yank 3500 with 3.73 gears would be a natural consideration for my set-up, but I'd rather change gears and keep my converter this go around (imagine that!). The SY 3500 would certainly give me a softer hit off the line and would work well on nitrous, it just would help my fuel economy nor make my street racing much better. 1st gear would still go by too quickly...even with the soft hitting and WAY efficient Super Yank.

MitchR

Patrick,

Why don;t you compromise and put 3.23's back in <img src="gr_tounge.gif" border="0">

IMO, I think 3.23's are the best of both worlds. I can totally see your point on the cons of 3.73's in the A4 but I really think going to the 2.73's would hinder performance compared to 3.23's and feel too loose with a 3500 or more stall converter.

nice discussion though !

- Mitch