4.11s with 6-speed? Pros/Cons
Thread Starter
Running Guns & Moonshine
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From: CT
4.11s with 6-speed? Pros/Cons
I am going to be scheduling the car to have the axle shaft seals replaced in a few weeks. I figure, what better time to have the gears changed?
I'm thinking - 3.73s will make 6th gear more usable, but really isn't a huge change from 3.42s.
4.11s might be worth it. What 1/4 mile gains have people seen with the 4.11s?
BTW - I don't really care too much about loss of the few mpg involved or top speeds. I'm not one for driving THAT fast to begin with. Besides, with the 6th gear available for pulling I figure it'll still be good to go fast.
I'm thinking - 3.73s will make 6th gear more usable, but really isn't a huge change from 3.42s.
4.11s might be worth it. What 1/4 mile gains have people seen with the 4.11s?
BTW - I don't really care too much about loss of the few mpg involved or top speeds. I'm not one for driving THAT fast to begin with. Besides, with the 6th gear available for pulling I figure it'll still be good to go fast.
Thread Starter
Running Guns & Moonshine
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From: CT
Re: 4.11s with 6-speed? Pros/Cons (Brett C5 SCCA)
Any traction issues with 4.11s? Looking for people to comment that have these gears.
Also - what would you recommend for a stock LS1 with 7psi and bolt-ons? I think the 3.73s would probably match the engine pretty well. But I'm REALLY curious about 4.10s.
My logic being that 3.73s in my Camaro must be about the same as 4.10s with the T56 at the top end, but MUCH cooler down low. ;)
Anyone run into problems with either gearset?
Also - what would you recommend for a stock LS1 with 7psi and bolt-ons? I think the 3.73s would probably match the engine pretty well. But I'm REALLY curious about 4.10s.
My logic being that 3.73s in my Camaro must be about the same as 4.10s with the T56 at the top end, but MUCH cooler down low. ;)
Anyone run into problems with either gearset?
Platinum Supporting Vendor
Joined: Sep 2001
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From: VENTURA Ca
Re: 4.11s with 6-speed? Pros/Cons (Brett C5 SCCA)
I have the 4.10 and think it's great. Definately not too low. It just seems to put the car in the meat of the powerband at every shift. 2100 RPM @ 80 MPH in sixth, it's perfect. Much easier on the cloutch when parking or maneuvering around. I highly recommend it.
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St. Jude Donor '03-'08
Re: 4.11s with 6-speed? Pros/Cons (Brett C5 SCCA)
I am quite sure that 4.11's would make 1st gear obsolete in my Z06.
[Modified by joecooool, 9:59 PM 4/14/2002]
[Modified by joecooool, 9:59 PM 4/14/2002]
Thread Starter
Running Guns & Moonshine
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From: CT
Re: 4.11s with 6-speed? Pros/Cons (joecooool)
Probably true, though Andy seems to be fine with is and is arguably putting down more to the floor than a ZO6.
Good question, Andy. How is 1st gear? On a rating from "screech" to "haze" with about 8 steps of separation in between......how would you rate it on your combo if you were running the stock run-craps? :cheers:
Good question, Andy. How is 1st gear? On a rating from "screech" to "haze" with about 8 steps of separation in between......how would you rate it on your combo if you were running the stock run-craps? :cheers:
Thread Starter
Running Guns & Moonshine
Joined: Aug 2001
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From: CT
Re: 4.11s with 6-speed? Pros/Cons (Brett C5 SCCA)
Anyone have 1/4 mile comparisons on a 6-speed (either one!)
I'm more curious as to any gains in the 1/4 than anything else really. What gains have been seen with 4.10s? How about the 3.73s?
That's the REAL meat of the issue. :spam
I'm more curious as to any gains in the 1/4 than anything else really. What gains have been seen with 4.10s? How about the 3.73s?
That's the REAL meat of the issue. :spam
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From: Clouds Over California
Re: 4.11s with 6-speed? Pros/Cons (joecooool)
I don't see why joecooool, Andy's vette has more power than your Z06 unless you have modded it with H&C, Stroker, or S/C/TT, NoS. No offense dude, just did not see a list of mods and am using Historical Data of 01Z06 dyno runs which show between 330-365 RWHP. I think Andy is putting down over 400 RWHP and he would have more potential for any first gear issues than you would. :cheers:
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Re: 4.11s with 6-speed? Pros/Cons (Shinobi's97)
Anyone have the performance #'s on this change. 3.42 to 3.73 to 3.90 to 4.10 gears. Someone who has made any of these changes please chime in. I would like to know since this is probably my next upgrade as well.
Former Vendor
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From: Houston TX
Re: 4.11s with 6-speed? Pros/Cons (Nitro-C5)
Nitro-C5,
I see under your sig that you have nitrous on your car. It would be really tough to the car to hook with the 4.11. But it would definitely benefit you while on NA
:cheers:
-Tuan
I see under your sig that you have nitrous on your car. It would be really tough to the car to hook with the 4.11. But it would definitely benefit you while on NA
:cheers:
-Tuan
Safety Car
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From: Cumming Ga
Re: 4.11s with 6-speed? Pros/Cons (Tuan Le)
The z06 has 10% more gearing than the normal car, so 3.42 *1.1 = 3.76 for z06 stock. Try 4.11 * 1.1 = would be 4.52 which seems to me would be too much gear, since the z06 is fine with the stock gears anyway.
Thread Starter
Running Guns & Moonshine
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From: CT
Re: 4.11s with 6-speed? Pros/Cons (Timz06)
So the question stands.....who has done 1/4 runs on stock 3.42s and then with the 3.73s or 4.11s with not much else having been touched?
I know SOMEONE has timeslips. There are enough guys on here that have done the gear swaps. :chevy
I know SOMEONE has timeslips. There are enough guys on here that have done the gear swaps. :chevy
Le Mans Master
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From: Clouds Over California
Re: 4.11s with 6-speed? Pros/Cons (Andy@AandACorvette)
What I want to seek, is what the top speed is in 6th gear. Will the 4:10's allow the car to use 6th gear for top speed, currently C5's (Z06 included) do not have enough power or gearing to use 6th gear at top speed. Top Speed has been measured by redlining in 5th. I think the coupe went 172-178mph and the Z06's 165-168 mph (drag and lower gearing). Now we know that if you have at least 650 Hp like LPE's coupe, than you can do 225 mph in 6th. But lets say you have a car putting down over 400 RWHP using 4:10 GR, does that allow you to use 6th for top gear run out????? Just curious, I have taken my car up to 150 easy redlining to 4th, but road gets to bumpy to shift into 5th and run it out. Besides that most tracks don't allow you to get over 150 mph! So I am just wondering how many shifts its going to take to get to 150mph.
Melting Slicks
Joined: Mar 2001
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From: League City TX
Re: 4.11s with 6-speed? Pros/Cons (Shinobi's97)
I made a spreadsheet that shows Max speed in each gear and RPM at a given speed for the A4, MN6 and M12. It also has an M12 vs. MN6 comparo.
Enter your tire height, gear of choice and expected red-line.
A 3.73 gear with an MN6, basically gives you similar gearing to a stock Z06. The 1-2 is still a little shorter in the Z06.
My only concern with the 4.11 in an MN6 would be shifting to 5th at the Drag Strip.
Shoot me an email:
erictornwall@attbi.com
Enter your tire height, gear of choice and expected red-line.
A 3.73 gear with an MN6, basically gives you similar gearing to a stock Z06. The 1-2 is still a little shorter in the Z06.
My only concern with the 4.11 in an MN6 would be shifting to 5th at the Drag Strip.
Shoot me an email:
erictornwall@attbi.com
Drifting
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From: Chapin SC
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Re: 4.11s with 6-speed? Pros/Cons (Closer_2001)
This month's Hot Rod Magazine cautions going beyond 3:73 in a C5 because of strength issues. They say going from 3:42 to the 3:73 is worth 3/10 in the 1/4 mile.
Former Vendor
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From: Houston TX
Re: 4.11s with 6-speed? Pros/Cons (JerryL)
They say going from 3:42 to the 3:73 is worth 3/10 in the 1/4 mile.
:cheers:
-Tuan
Thread Starter
Running Guns & Moonshine
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From: CT
Re: 4.11s with 6-speed? Pros/Cons (JerryL)
.3 in the 1/4? So 12.95 to 12.65? Those are some interesting numbers. I'll have to pick up this month's copy.
174 redlined in 5th? Ok, so I have to ask now. How accurate are our speedometers? I ask because I bumped to 191 while redlined in 5th gear. Granted, I had a downhill advantage from 155 to about 185.......but still.....if everyone else is running in the 170s....what's up with my car? My ONLY mods at the time were the Borlas, Vortex rammer, and a BIG gut check before I decided to hold wot. This was 6000-6100 rpm in 5th on stock dimension tires and obviously stock 3.42 gearing.
Durability issues with anything greater than 3.73s. I can see that, yes. But we don't have a solid axle rear end, ours is stationary. I would think that would account for something? And when they wrote that in the article, did they just write it or did they back it up and say "in testing, we broke our first set of 4.11s after only 50 passes and 6 month" or anything quantitative?
174 redlined in 5th? Ok, so I have to ask now. How accurate are our speedometers? I ask because I bumped to 191 while redlined in 5th gear. Granted, I had a downhill advantage from 155 to about 185.......but still.....if everyone else is running in the 170s....what's up with my car? My ONLY mods at the time were the Borlas, Vortex rammer, and a BIG gut check before I decided to hold wot. This was 6000-6100 rpm in 5th on stock dimension tires and obviously stock 3.42 gearing.
Durability issues with anything greater than 3.73s. I can see that, yes. But we don't have a solid axle rear end, ours is stationary. I would think that would account for something? And when they wrote that in the article, did they just write it or did they back it up and say "in testing, we broke our first set of 4.11s after only 50 passes and 6 month" or anything quantitative?
Le Mans Master
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From: Austin Texas
Re: 4.11s with 6-speed? Pros/Cons (Brett C5 SCCA)
If the car red lines with 3.42 rear gears in 5th (0.75) at 175 then
the car red lines with 4.11 rear gears in 6th (0.50) at 218 (down from 265).
6th is still too high for a 400 HP engine to rev out even with 4.11 rear gears.
the car red lines with 4.11 rear gears in 6th (0.50) at 218 (down from 265).
6th is still too high for a 400 HP engine to rev out even with 4.11 rear gears.
Melting Slicks
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Re: 4.11s with 6-speed? Pros/Cons (JerryL)
This month's Hot Rod Magazine cautions going beyond 3:73 in a C5 because of strength issues. They say going from 3:42 to the 3:73 is worth 3/10 in the 1/4 mile.
JC