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Old 09-01-2021, 10:23 PM   #1
kayer32
 
Drives: White 2014 1SS 1LE
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4.11 gear vs stock

So Iíve decided to just do an aggressive NA street strip car. Currently have cam, ported throttle body, ported and rod mod intake, roto fab cold air, and E85 with 850 cc injectors and adm fpcm. So Iím thinking about doing a more aggressive cam and head work. My question though is would it be worth it to go to the 4.11 gear on these cars. I know it doesnít make as big of a difference on these vs regular SS. I have asked in a couple FB groups but not much info. Hopefully some her has already made the swap and can give some insight. What kind of difference in quarter mile times and how is it on road course?
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Old 09-02-2021, 10:53 PM   #2
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I went with a 4.10 tru-trac set up from GPI. And they are worth helps so much with getting the big girl moving. And 6th gear on the hwy I dropped 500 rpm with almost no cam surge getting 22mpg
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Old 09-05-2021, 11:29 PM   #3
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Originally Posted by IWANTA(ss) View Post
I went with a 4.10 tru-trac set up from GPI. And they are worth helps so much with getting the big girl moving. And 6th gear on the hwy I dropped 500 rpm with almost no cam surge getting 22mpg
Yeah I have that setup in my GPI cart right now. Was wanting some real life feedback from 1LE specific cars. Iíll probably do the gears and diff prior to changing the cam and heads.
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Old 09-15-2021, 09:02 AM   #4
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Isn't the standard gear a 3.90? I wouldn't expect much bang for the buck there.

EDIT: Just checked the specs, 3.91
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Old 09-26-2021, 04:44 PM   #5
demonspeed
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I’m going to 4.10 and a Truetrac over the winter. The stock diff is worn out, but I’m not going to keep the stock gears since I’m going in there anyway. While going to 4.10 from a 3.91 won’t be as drastic as someone going from 3.45, it still has an affect.
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Old 09-26-2021, 06:42 PM   #6
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Originally Posted by demonspeed View Post
Iím going to 4.10 and a Truetrac over the winter. The stock diff is worn out, but Iím not going to keep the stock gears since Iím going in there anyway. While going to 4.10 from a 3.91 wonít be as drastic as someone going from 3.45, it still has an affect.
The 3.91 in our cars is only there to make up for the fact that our transmission is geared much longer than a regular SS so the gear spacing can be tighter. 1LEs are slightly slower in the quarter than a regular SS because of the gearing.

And someone has to say it: You have the wrong car for a street/strip setup. You have the right car for an Auto-X/Track-day setup.
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Old 09-27-2021, 06:37 PM   #7
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Originally Posted by Billy10mm View Post
The 3.91 in our cars is only there to make up for the fact that our transmission is geared much longer than a regular SS so the gear spacing can be tighter. 1LEs are slightly slower in the quarter than a regular SS because of the gearing.

And someone has to say it: You have the wrong car for a street/strip setup. You have the right car for an Auto-X/Track-day setup.
And? I track my car and could use the lower (numerically higher) gearing coming out of certain turns. Gear swaps arenít just for drag racers, and if you think so, then you donít actually race your car.
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Old 09-28-2021, 01:32 PM   #8
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Originally Posted by demonspeed View Post
And? I track my car and could use the lower (numerically higher) gearing coming out of certain turns. Gear swaps arenít just for drag racers, and if you think so, then you donít actually race your car.
Nice try, but no, you aren't building a track car.

Quote:
So Iíve decided to just do an aggressive NA street strip car.
The problem with the internet is, it remembers.
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  • G2s: Rock throwing is like like a tramp stamp; although problematic, it's a sign of good things to come.
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Old 09-28-2021, 02:33 PM   #9
demonspeed
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Originally Posted by Billy10mm View Post
Nice try, but no, you aren't building a track car.



The problem with the internet is, it remembers.
Imagine the time youíve spent going through my postsÖ oh wait, you didnít go through mine - youíre quoting the OPÖ

I donít need to share with everyone because quite frankly I donít think anyone cares.. I enjoy drag racing, so I still do that as well, but itís no longer the focus. Still love a good street race, too. But here are pictures from various track days before I bent a rod and put a hole in #7 (I even race my dailyÖ). You should try it some time - itís what these cars are made for, right?
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Last edited by demonspeed; 09-28-2021 at 09:42 PM.
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