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Old 09-03-2012, 08:15 PM   #1
zare6
 
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changing gears 4.10 how much difference

I recently started 1/8 mile dragging with a 2011 ss ls3 manual, I was running high 8's at 83 to 84mph. How much better will my time be with the gear swap. Btw the car is stock except muffler delete and will be running nitto 555r's on a stock wheel
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Old 09-03-2012, 10:31 PM   #2
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anybody try 4.10's?
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Old 09-03-2012, 11:08 PM   #3
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i have 4.10's love them. never use them at the track. and dont use 4.10's at the track. get the 4.11's
basically your new rev limiter speeds will be 45,55,75,105
sooo much better to drive. feels right. much better luck launching, although takes a while to get it to stick. 30% more torque is alot!!!
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Old 09-04-2012, 05:52 AM   #4
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Originally Posted by Parag View Post
i have 4.10's love them. never use them at the track. and dont use 4.10's at the track. get the 4.11's
basically your new rev limiter speeds will be 45,55,75,105
sooo much better to drive. feels right. much better luck launching, although takes a while to get it to stick. 30% more torque is alot!!!
whats the difference between 4.11 and 4.10"s other than the obvious .01 ratio difference, i want to know how much time i will gain with the swap thanks
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Old 09-04-2012, 11:21 AM   #5
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41/10 teeth on gears for 4:10, 37/9 teeth for 4.11s. The 4.11 is a physically stronger gearset
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Old 09-04-2012, 02:43 PM   #6
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41/10 teeth on gears for 4:10, 37/9 teeth for 4.11s. The 4.11 is a physically stronger gearset

Hi doesnt seem to be much choice it seems the 4.10 is the most common ratio out of the two, i was hoping to find someone who has the same car and did the swap and let me know if it lowered his time much
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Old 09-04-2012, 08:48 PM   #7
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the richmond 4.10's are prone to breakage. they made a new version of it and called it a 4.11. the 4.11 is made with the stronger OEM metal.
as for the times, it will help, but only if you know how to drive. if you are a straight beginner, it will be much more difficult to launch. the stock 3.43's launches beautifully with the stock power every time.
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Old 09-05-2012, 07:42 AM   #8
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I find the stock 3.43s are terrible for launching, reason is they are to easy to bog or burn, there is that sweet spot they like, but its hard to overcome if you miss it! I feel a 3.90-4.11s would make launching easier, letting you launch at a lower RPM and having the engine do more work and getting into the band faster.
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Old 09-05-2012, 07:58 AM   #9
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Adding more aggressive gearing will give your car a better feel (feels fasters, pulls better), but track times don't always agree with the feeling. You can use the torque multiplication theory for more aggressive gearing, but it just doesn't equate going down the track.


Do they help? In many cases, yes.
Do they hurt? In some cases, yes.

It's all about getting the power down (hooking up), and how many times you need to shift going down the track.

I've seen several guys who put 4:10s in their 5th Gen Camaro, later remove them for less aggressive gearing because they were actually hurting their 1/4 mile times.
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Old 09-05-2012, 08:24 AM   #10
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Originally Posted by Bad70supreme View Post
I find the stock 3.43s are terrible for launching, reason is they are to easy to bog or burn, there is that sweet spot they like, but its hard to overcome if you miss it! I feel a 3.90-4.11s would make launching easier, letting you launch at a lower RPM and having the engine do more work and getting into the band faster.
I agree with u totally, the 3.43 are a terrible launch ratio for this car, i was beat by cars with 290 hp, they beat out of the hole every time. They all had cars with 4.11 or lower
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Old 09-05-2012, 04:09 PM   #11
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for me, not a drag person, just drift and track. I could just go for it every time with the stock gears. I would rarely slip. had very consistent launches. with my 4.10's it took me some time to learn the sweet spot. it loved to slip. maybe i am just now learning to launch. i dont know if i could launch a stock car correctly anymore. all i know is that i love my gears, i can launch like a dream. if i want i can spin through third all the way through the fourth gear shift. entering drifts is nothing but holding throttle.
for straight up drag i feel it would be too much gear if i added any more power. I feel i have to ride the lower rpm to keep from spinning, while 3.91's I could put the same power to the ground using higher rpm. that extra shift in the 1/4 mile from 3.91 to 4.11 is a big difference also. The big recommendation i have seen on here all depends on the power level you have. more power the less aggressive gearing you want. I know people that have 4.33's and can launch as if they had twice the power. tires also matter, if you are running drag radials or stickier, you can run a step higher gear ratio. the common on here for the big boys is 3.91 for manuals, and 3.73 for autos. I just cannot explain how much more fun the higher gear ratios are though. it takes the car from a street car to a race car. If you are after that timeslip, not just fun, you need to really understand how you drive, and then talk to someone like ted jannetty. he can tell you what you want, but only after you know what you have.
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Old 09-06-2012, 04:37 PM   #12
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best way is if ur gonna run a 1/8 i say the 4.11 would be nice . u want to go across the line around 6000 rpm or so . so how much power u have will play a row in what gear u are going to go with. i know im at 461 atm to the wheels and i havent had this car at the 1/4 but im gonna say im gonna be shifting at the line . which is no good. so i either need more power to get in 4th a bit before the line or use 3.91 gears or 4.11 . its not all about the feel . unless ur just daily driving and dont care about the times.
thats what i think anyway.
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Old 09-06-2012, 04:39 PM   #13
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u want to be in ur peak hp range when going across the line or close as possible. so 5700 to 6200 rpm just guess every car is diff.
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Old 09-06-2012, 05:41 PM   #14
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i race 1/8 and with the 3.43 i barely get into 3rd before the end,, I am running stock except for exhaust, 435 engine hp, i was hoping someone did the same gear swap and could tell me how much they gained.
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