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Old 03-21-2012, 07:31 AM   #1
E.T.


 
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How much will gears help 0-60 time?

Not that it is bad now, but I'm just wondering what kind of 0-60 time I can expect to pull by going from stock 3.27 gears to 3.70? (see sig for mods)
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Old 03-21-2012, 07:45 AM   #2
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Significantly, although you have to be able to put that to the ground, your acceleration is going to be totally different it will be like driving a different car. You need trailering arms toe rods and drag radials to put that down, dont forget though when you start getting traction things start breaking. Now onto what you want to know, guessing by your mods that probably puts you in the 385 rwhp or so if you can drive I can see you putting down a 3.8-4.3, sixty time.
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Old 03-21-2012, 08:02 AM   #3
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Significantly, although you have to be able to put that to the ground, your acceleration is going to be totally different it will be like driving a different car. You need trailering arms toe rods and drag radials to put that down, dont forget though when you start getting traction things start breaking. Now onto what you want to know, guessing by your mods that probably puts you in the 385 rwhp or so if you can drive I can see you putting down a 3.8-4.3, sixty time.
A 3.8 to 4.3 60' time? Serious? Is he driving a bus or a Camaro? Seems like an incredibly slow 60' time. A 2.0' is barely acceptable for a camaro. At least I thought.
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Old 03-21-2012, 08:04 AM   #4
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Significantly, although you have to be able to put that to the ground, your acceleration is going to be totally different it will be like driving a different car. You need trailering arms toe rods and drag radials to put that down, dont forget though when you start getting traction things start breaking. Now onto what you want to know, guessing by your mods that probably puts you in the 385 rwhp or so if you can drive I can see you putting down a 3.8-4.3, sixty time.
No way hes 385 rwhp... hes A6 (obvious by the 3.27 rear gear) with intake, catback exhaust and a scanner tune, so with his mods, hes 330-350 rwhp MAX.

He won't come close to 385 without headers, hiflow cats and a real tune... not taking anything away from Ted's tunes, just 385 from an A6 is damn good so it takes a lot to get there!

Furthermore, you dont usually need to worry about breakage on the A6 cars, much less drivetrain stress than on the M6.


OP: I had (HAD) 4.10 gears... it was BLISS untill they exploded. Gears are GREAT on these cars but VERY expensive. Have you priced them yet?
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Old 03-21-2012, 08:08 AM   #5
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A 3.8 to 4.3 60' time? Serious? Is he driving a bus or a Camaro? Seems like an incredibly slow 60' time. A 2.0' is barely acceptable for a camaro. At least I thought.
He means 0-60 mph, not 60 feet.
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Old 03-21-2012, 08:16 AM   #6
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What kinds of gains have you auto guys seen in the gear swap at the track.? I have gone 1.60 60 ft already with the stock 3.27 gears
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Old 03-21-2012, 08:17 AM   #7
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He means 0-60 mph, not 60 feet.
That makes more sense.
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Old 03-21-2012, 08:19 AM   #8
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What kinds of gains have you auto guys seen in the gear swap at the track.? I have gone 1.60 60 ft already with the stock 3.27 gears
That's a tricky question. I think you start running into tire and suspension issues when you start moving up in gears. If you change gearing, you are more than likely going to have to spend money on suspension mods to make the car hook. You might get worse times from the spinning.
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Old 03-21-2012, 08:39 AM   #9
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Sorry, I have an M6 so I'm always used to giving advice about what I think my car would be like if I had done said mods, I no clue Autos had 3.27 gears, I'm sorry.
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Old 03-21-2012, 08:41 AM   #10
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A 3.8 to 4.3 60' time? Serious? Is he driving a bus or a Camaro? Seems like an incredibly slow 60' time. A 2.0' is barely acceptable for a camaro. At least I thought.
I meant 0-60 times, and you drive an automatic that may be why you think a 2.0 is barely acceptable, I can't get less than a 2.6 without DR's, but this is my FIRST manual car.
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Old 03-21-2012, 09:04 AM   #11
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Yep, I was asking about 0-60, not 60'.

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Originally Posted by IROCanSS View Post
No way hes 385 rwhp... hes A6 (obvious by the 3.27 rear gear) with intake, catback exhaust and a scanner tune, so with his mods, hes 330-350 rwhp MAX.

He won't come close to 385 without headers, hiflow cats and a real tune... not taking anything away from Ted's tunes, just 385 from an A6 is damn good so it takes a lot to get there!

Furthermore, you dont usually need to worry about breakage on the A6 cars, much less drivetrain stress than on the M6.


OP: I had (HAD) 4.10 gears... it was BLISS untill they exploded. Gears are GREAT on these cars but VERY expensive. Have you priced them yet?
Haven't dyno'd so I can say what I'm putting to the wheels. I know gears aren't going to add any actual HP, but from what I've read, it will make the car feel a lot stronger, and that's what I'm concerned with. It's nice that these care will do 170+, but I'd rather have that seat of the pants feeling when driving around town and staying within legal limits.

I saw that the 3.70s run about 6 or 7 hundred online, but I have a gear/trans shop right around the corner from me and they are working in getting me a quote. I think they said labor would run about 80 bucks an hour.
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Old 03-21-2012, 09:19 AM   #12
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I saw no gains in my sixty (not 0-60, but it's a good indicator) when I went from 3.27 to 3.45. But I'm sure a bigger gear like 3.73 or 3.91 or 4.10 would make a difference. Personally, I think 3.73's (or 3.70, whichever) are a good all around gear for a bolt-on automatic.

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Old 03-21-2012, 09:26 AM   #13
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That's a tricky question. I think you start running into tire and suspension issues when you start moving up in gears. If you change gearing, you are more than likely going to have to spend money on suspension mods to make the car hook. You might get worse times from the spinning.

I dont care about spining, I have a pure slick on the car and suspension.
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Old 03-22-2012, 03:56 PM   #14
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I meant 0-60 times, and you drive an automatic that may be why you think a 2.0 is barely acceptable, I can't get less than a 2.6 without DR's, but this is my FIRST manual car.
I've only been to the track once-- before my suspension mods and got a 2.2 60' on all-season tires and 4.10 gears on the first try. Did you ease into the throttle or were you spinning your tires?... Anyway, gears made a night and day difference in the get up and go factor for me--still my favorite mod, to date!
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Old 03-22-2012, 06:15 PM   #15
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I meant 0-60 times, and you drive an automatic that may be why you think a 2.0 is barely acceptable, I can't get less than a 2.6 without DR's, but this is my FIRST manual car.
You need more practice. If the engine is stock/bolt on's, hold the engine at 4000 RPM, and ROLL out of the clutch agressively to launch the car...tip into the throttle as necessary until the clutch is fully engaged, and THEN at that same instant, get the throttle on the floor. Turn all the electronic nonsense off...if it's got more mods than that, like a cam or more, then the RPM to launch at will change...experiment.

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I've only been to the track once-- before my suspension mods and got a 2.2 60' on all-season tires and 4.10 gears on the first try. Did you ease into the throttle or were you spinning your tires?... Anyway, gears made a night and day difference in the get up and go factor for me--still my favorite mod, to date!
I have a stock suspension/stock gear in my car, and it's been 1.75 to 60' on the Nitto's.

To be honest, in launching a car that's capable of spinning the tires...more gear makes it easier to control...my car has been 1.75's, but not without me being completely focused on it and saying "wow I got it right" as the car leaves the line...with a 4.10 gear it'd be a lot easier to deal with the fast clutch roll. In a car where traction is not an issue, like a full slick car that leaves the line at full throttle easily, more gear will get it out of the hole faster, and may introduce a traction problem requiring more driver attention.

Don't buy gears expecting it to make the car a total animal off the line though. While more gear makes it easier to control the launch (once you know how to launch the car), it also makes it easier to blow the tires off and get nowhere.
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Old 03-22-2012, 08:48 PM   #16
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The car may "FEEL" faster with gears but there is no way its going to drop ETs the way a converter or LT headers will. Other than blowing the launch gears could also make the car slower by forcing another gear shift on the big end. Like if you can go through the traps at the top of 3rd or 4th gear you wouldnt want a gear that forced a shift to 4th or 5th gear.
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Old 03-22-2012, 08:56 PM   #17
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The car may "FEEL" faster with gears but there is no way its going to drop ETs the way a converter or LT headers will. Other than blowing the launch gears could also make the car slower by forcing another gear shift on the big end. Like if you can go through the traps at the top of 3rd or 4th gear you wouldnt want a gear that forced a shift to 4th or 5th gear.
A bolt on's LS3 car has to shift 4th RIGHT before the traps with stock gears...and would still be in 4th through the traps with a pretty significant gear change. Literally I saw the traps coming and thought "no I can hold on to third" and I hit the rev limiter and got really pissed...so I hit 4th on the next pass. Even going to a 4.11 in an LS3 car though, it'd be good for 10's without grabbing another gear.

I'm not sure how the gear ratio's are in an L99 car though.
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