quote:

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Originally posted by stangfanatic87:
Thanks guys..I really feel I should get 3.73s...just don't want to regret it plus my friend is adamently telling me to go 4.10s he says he loves them on his car but then again he has a 6 speed terminator..

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quote:

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Originally posted by Mr.10psi:

quote:

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Originally posted by stangfanatic87:
Thanks guys..I really feel I should get 3.73s...just don't want to regret it plus my friend is adamently telling me to go 4.10s he says he loves them on his car but then again he has a 6 speed terminator..

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I have 4.10 in my modular, and 3.55s in my fox only cuz it will be sprayed which that gear will prevent me from running out. Now as for your car, the 3.73 gear at the 1/4 will be inefficient hands down if ran in an n/a form. Set the car up to cross the traps right after peak rpm. 3.73 will not do that. Depending how high or low you shift is gonna determine what gear to run, not to mention the weight of the car, how much power its making, and the tire size along with transmission gearing. More info about what heads, cam, intake, and exhaust systems you will be running and i will figure the correct gear giving i know where its gonna peak and hold. Good luck with your car

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quote:

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Originally posted by 5.0 LsX:
4:10's behind a 6 speed is closer to 3:55's w/ a 5 speed. I would suggest 3:73's if you have any doubt

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quote:

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Originally posted by Mr.10psi:

quote:

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Originally posted by stangfanatic87:
Thanks guys..I really feel I should get 3.73s...just don't want to regret it plus my friend is adamently telling me to go 4.10s he says he loves them on his car but then again he has a 6 speed terminator..

---

I have 4.10 in my modular, and 3.55s in my fox only cuz it will be sprayed which that gear will prevent me from running out. Now as for your car, the 3.73 gear at the 1/4 will be inefficient hands down if ran in an n/a form. Set the car up to cross the traps right after peak rpm. 3.73 will not do that. Depending how high or low you shift is gonna determine what gear to run, not to mention the weight of the car, how much power its making, and the tire size along with transmission gearing. More info about what heads, cam, intake, and exhaust systems you will be running and i will figure the correct gear giving i know where its gonna peak and hold. Good luck with your car

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quote:

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Originally posted by alexv:
So it depends a lot on the engine and transmission you are using, right?
Would 4.10 be too much on a 96 Cobra (with stock T-45) for a DD (it's never going to see the track)?

Sorry for thread hijack but I am curious about this too. I know lots of peoples are happy about their 4.10s but it's never clear what peoples use their car for...

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quote:

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Originally posted by warhorse58gt:

quote:

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Originally posted by Mr.10psi:

quote:

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Originally posted by stangfanatic87:
Thanks guys..I really feel I should get 3.73s...just don't want to regret it plus my friend is adamently telling me to go 4.10s he says he loves them on his car but then again he has a 6 speed terminator..

---

I have 4.10 in my modular, and 3.55s in my fox only cuz it will be sprayed which that gear will prevent me from running out. Now as for your car, the 3.73 gear at the 1/4 will be inefficient hands down if ran in an n/a form. Set the car up to cross the traps right after peak rpm. 3.73 will not do that. Depending how high or low you shift is gonna determine what gear to run, not to mention the weight of the car, how much power its making, and the tire size along with transmission gearing. More info about what heads, cam, intake, and exhaust systems you will be running and i will figure the correct gear giving i know where its gonna peak and hold. Good luck with your car

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You are doing it again. Going out of your way to explain shit in detail. It's lost on 85% of cafords. Now you want to bring in tire heights, and talk about crossing traps. Most people on here haven't even been to the track.

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quote:

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Originally posted by alexv:
So it depends a lot on the engine and transmission you are using, right?
Would 4.10 be too much on a 96 Cobra (with stock T-45) for a DD (it's never going to see the track)?

Sorry for thread hijack but I am curious about this too. I know lots of peoples are happy about their 4.10s but it's never clear what peoples use their car for...

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quote:

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Originally posted by stangfanatic87:

quote:

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Originally posted by Mr.10psi:

quote:

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Originally posted by stangfanatic87:
Thanks guys..I really feel I should get 3.73s...just don't want to regret it plus my friend is adamently telling me to go 4.10s he says he loves them on his car but then again he has a 6 speed terminator..

---

I have 4.10 in my modular, and 3.55s in my fox only cuz it will be sprayed which that gear will prevent me from running out. Now as for your car, the 3.73 gear at the 1/4 will be inefficient hands down if ran in an n/a form. Set the car up to cross the traps right after peak rpm. 3.73 will not do that. Depending how high or low you shift is gonna determine what gear to run, not to mention the weight of the car, how much power its making, and the tire size along with transmission gearing. More info about what heads, cam, intake, and exhaust systems you will be running and i will figure the correct gear giving i know where its gonna peak and hold. Good luck with your car

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306 forged pistons
World product jr windsor heads 180
E303
GT40 upper n lower
Mac cold air
T5
JBA shorties o/r H 2chamber flows
70mm 19lb inj.

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3.73 is definitely not enough, i came up with 3.90s bro, i tried to make the 4.10 work but considering your heads cam shorties and intake i have a 90 percent chance of knowing where its gonna peak and im assuming your running a 26" slick and its just to close to make a true decision without seeing the dynograph. I could nail it if i had the graph but its all good. The 4.10 will work if you have a a higher shift such as around 5800-6000rpm.

[ 2013-07-03, 10:47 PM: Message edited by: Mr.10psi ]
 

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Posted by warhorse58gt (Member # 7702) on :
 
With the stock 5 speed. I would run 3:73's on a 26" tire, and 4:10's on a 28" From your few specs, I don't see you shifting any where north of 6300rpm tops. I run 4:10's with a c4, nos, and 28"s. I cross the traps @ 7200rpms..
 

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Posted by Mr.10psi (Member # 11062) on :
 

quote:

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Originally posted by warhorse58gt:
With the stock 5 speed. I would run 3:73's on a 26" tire, and 4:10's on a 28" From your few specs, I don't see you shifting any where north of 6300rpm tops. I run 4:10's with a c4, nos, and 28"s. I cross the traps @ 7200rpms..

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quote:

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Originally posted by Mr.10psi:

quote:

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Originally posted by warhorse58gt:
With the stock 5 speed. I would run 3:73's on a 26" tire, and 4:10's on a 28" From your few specs, I don't see you shifting any where north of 6300rpm tops. I run 4:10's with a c4, nos, and 28"s. I cross the traps @ 7200rpms..

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warhorse, so whats gonna happen when he goes out to the 1/4 mile and he has rpm left on the table which could be used up by going up to a higher gear such as 3.90? Having left over rpm is not ideal at all.Not trying to start shit with you, just want to see your views and hear what you got to say.

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You do see his specs right? I highly doubt it will make any real difference. What is 300rpms? To a car with his specs. Hell Going from 3:73 to 4:10's netted 500-600rpm for me. I doubt He is going to notice 300rpm. Not to mention 99% of all 3:90's I have seen/heard whine. So again 300rpm + the whine isn't worth the 3:90's. Hell He should go 4:10's with a 28" tire. If that doesn't nett him enough rpm's he can drop to a 27" tire.
 

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Posted by alexv (Member # 13018) on :
 

quote:

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Originally posted by Mr.10psi:
Most people just install gear depending on what their buddy told them and what they think is ideal without giving hard evidence of what is really correct, when i set up what gears i choose its not becuz my friends tell me he really likes his 4.10s lol, this is not attack at anyone in this post or anybody else whatsoever. Ill give you any example, you take a zo6 transmission that has a 1st gear ratio of 2.66 vs a tr3650 which has a 3.38 and use the same tire, same shift points, same hp, same weight, same car, etc, only difference being the gear ratios in the tranny and what is gonna happen is the car will finish in 4th different than each other becuz of the different tranny gearing, and that is why im so anal about knowing every spec i ask for. You have to take all the variables into consideration otherwise it will not work at all. Too many times i have seen people install gears and go to the 1/4 mile and go slower becuz of the improper gear selection which cause them to shift into 5th which results in a loss of et big time. Same goes for being undergeared, the vortech zo6 that ive been fucking with has the stock 3.42 gears, and were crossing the traps in 4th at an extremely low rpm when it should be crossing at peak rpm or just a little after, that is why im having 3.90s installed in it. I need more info from your car, then i will tell you exactly, i dont want to half as my decision for lack of needed info. peace

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quote:

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Originally posted by alexv:

quote:

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Originally posted by Mr.10psi:
Most people just install gear depending on what their buddy told them and what they think is ideal without giving hard evidence of what is really correct, when i set up what gears i choose its not becuz my friends tell me he really likes his 4.10s lol, this is not attack at anyone in this post or anybody else whatsoever. Ill give you any example, you take a zo6 transmission that has a 1st gear ratio of 2.66 vs a tr3650 which has a 3.38 and use the same tire, same shift points, same hp, same weight, same car, etc, only difference being the gear ratios in the tranny and what is gonna happen is the car will finish in 4th different than each other becuz of the different tranny gearing, and that is why im so anal about knowing every spec i ask for. You have to take all the variables into consideration otherwise it will not work at all. Too many times i have seen people install gears and go to the 1/4 mile and go slower becuz of the improper gear selection which cause them to shift into 5th which results in a loss of et big time. Same goes for being undergeared, the vortech zo6 that ive been fucking with has the stock 3.42 gears, and were crossing the traps in 4th at an extremely low rpm when it should be crossing at peak rpm or just a little after, that is why im having 3.90s installed in it. I need more info from your car, then i will tell you exactly, i dont want to half as my decision for lack of needed info. peace

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96 Cobra mostly stock other than FR shorty headers, CAI, bama tune. 285/40/17 front and 315/35/17 rear.
Complete GR-40 Griggs racing kit. Includes tubular K-member, tubular front control arms, front adjustable coil-over kit, caster-camber plates, front Koni double adjustable struts,rear torque arm, chassis stiffener, panhard bar, tubular rear control arms, rear Koni adjustable shocks, kevlar clutch, aluminum flywheel.
Not interested in 1/4 mile at all, just want a better acceleration without sacrificing driveability.

---

quote:

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Originally posted by warhorse58gt:

quote:

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Originally posted by Mr.10psi:

quote:

---

Originally posted by warhorse58gt:
With the stock 5 speed. I would run 3:73's on a 26" tire, and 4:10's on a 28" From your few specs, I don't see you shifting any where north of 6300rpm tops. I run 4:10's with a c4, nos, and 28"s. I cross the traps @ 7200rpms..

---

warhorse, so whats gonna happen when he goes out to the 1/4 mile and he has rpm left on the table which could be used up by going up to a higher gear such as 3.90? Having left over rpm is not ideal at all.Not trying to start shit with you, just want to see your views and hear what you got to say.

---

You do see his specs right? I highly doubt it will make any real difference. What is 300rpms? To a car with his specs. Hell Going from 3:73 to 4:10's netted 500-600rpm for me. I doubt He is going to notice 300rpm. Not to mention 99% of all 3:90's I have seen/heard whine. So again 300rpm + the whine isn't worth the 3:90's. Hell He should go 4:10's with a 28" tire. If that doesn't nett him enough rpm's he can drop to a 27" tire.

---

quote:

---

Originally posted by warhorse58gt:

quote:

---

Originally posted by Mr.10psi:

quote:

---

Originally posted by warhorse58gt:
With the stock 5 speed. I would run 3:73's on a 26" tire, and 4:10's on a 28" From your few specs, I don't see you shifting any where north of 6300rpm tops. I run 4:10's with a c4, nos, and 28"s. I cross the traps @ 7200rpms..

---

warhorse, so whats gonna happen when he goes out to the 1/4 mile and he has rpm left on the table which could be used up by going up to a higher gear such as 3.90? Having left over rpm is not ideal at all.Not trying to start shit with you, just want to see your views and hear what you got to say.

---

You do see his specs right? I highly doubt it will make any real difference. What is 300rpms? To a car with his specs. Hell Going from 3:73 to 4:10's netted 500-600rpm for me. I doubt He is going to notice 300rpm. Not to mention 99% of all 3:90's I have seen/heard whine. So again 300rpm + the whine isn't worth the 3:90's. Hell He should go 4:10's with a 28" tire. If that doesn't nett him enough rpm's he can drop to a 27" tire.

---

quote:

---

Originally posted by alexv:

quote:

---

Originally posted by Mr.10psi:
Most people just install gear depending on what their buddy told them and what they think is ideal without giving hard evidence of what is really correct, when i set up what gears i choose its not becuz my friends tell me he really likes his 4.10s lol, this is not attack at anyone in this post or anybody else whatsoever. Ill give you any example, you take a zo6 transmission that has a 1st gear ratio of 2.66 vs a tr3650 which has a 3.38 and use the same tire, same shift points, same hp, same weight, same car, etc, only difference being the gear ratios in the tranny and what is gonna happen is the car will finish in 4th different than each other becuz of the different tranny gearing, and that is why im so anal about knowing every spec i ask for. You have to take all the variables into consideration otherwise it will not work at all. Too many times i have seen people install gears and go to the 1/4 mile and go slower becuz of the improper gear selection which cause them to shift into 5th which results in a loss of et big time. Same goes for being undergeared, the vortech zo6 that ive been fucking with has the stock 3.42 gears, and were crossing the traps in 4th at an extremely low rpm when it should be crossing at peak rpm or just a little after, that is why im having 3.90s installed in it. I need more info from your car, then i will tell you exactly, i dont want to half as my decision for lack of needed info. peace

---

96 Cobra mostly stock other than FR shorty headers, CAI, bama tune. 285/40/17 front and 315/35/17 rear.
Complete GR-40 Griggs racing kit. Includes tubular K-member, tubular front control arms, front adjustable coil-over kit, caster-camber plates, front Koni double adjustable struts,rear torque arm, chassis stiffener, panhard bar, tubular rear control arms, rear Koni adjustable shocks, kevlar clutch, aluminum flywheel.
Not interested in 1/4 mile at all, just want a better acceleration without sacrificing driveability.

---

quote:

---

Originally posted by stangfanatic87:

quote:

---

Originally posted by warhorse58gt:

quote:

---

Originally posted by Mr.10psi:

quote:

---

Originally posted by warhorse58gt:
With the stock 5 speed. I would run 3:73's on a 26" tire, and 4:10's on a 28" From your few specs, I don't see you shifting any where north of 6300rpm tops. I run 4:10's with a c4, nos, and 28"s. I cross the traps @ 7200rpms..

---

warhorse, so whats gonna happen when he goes out to the 1/4 mile and he has rpm left on the table which could be used up by going up to a higher gear such as 3.90? Having left over rpm is not ideal at all.Not trying to start shit with you, just want to see your views and hear what you got to say.

---

You do see his specs right? I highly doubt it will make any real difference. What is 300rpms? To a car with his specs. Hell Going from 3:73 to 4:10's netted 500-600rpm for me. I doubt He is going to notice 300rpm. Not to mention 99% of all 3:90's I have seen/heard whine. So again 300rpm + the whine isn't worth the 3:90's. Hell He should go 4:10's with a 28" tire. If that doesn't nett him enough rpm's he can drop to a 27" tire.

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First off thanks for all of ur guys' input..
My street tire is a 275 40 18
If and when I do go to the track I will run a 27x10
Warhorse ur the third i heard that 3.90s whine so I won't do those..thanks

Both mrpsi and warhorse are very knowledgeable as I can see. Between both ur honest opinion please...

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quote:

---

Originally posted by Mr.10psi:

quote:

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Originally posted by stangfanatic87:

quote:

---

Originally posted by warhorse58gt:

quote:

---

Originally posted by Mr.10psi:

quote:

---

Originally posted by warhorse58gt:
With the stock 5 speed. I would run 3:73's on a 26" tire, and 4:10's on a 28" From your few specs, I don't see you shifting any where north of 6300rpm tops. I run 4:10's with a c4, nos, and 28"s. I cross the traps @ 7200rpms..

---

warhorse, so whats gonna happen when he goes out to the 1/4 mile and he has rpm left on the table which could be used up by going up to a higher gear such as 3.90? Having left over rpm is not ideal at all.Not trying to start shit with you, just want to see your views and hear what you got to say.

---

You do see his specs right? I highly doubt it will make any real difference. What is 300rpms? To a car with his specs. Hell Going from 3:73 to 4:10's netted 500-600rpm for me. I doubt He is going to notice 300rpm. Not to mention 99% of all 3:90's I have seen/heard whine. So again 300rpm + the whine isn't worth the 3:90's. Hell He should go 4:10's with a 28" tire. If that doesn't nett him enough rpm's he can drop to a 27" tire.

---

First off thanks for all of ur guys' input..
My street tire is a 275 40 18
If and when I do go to the track I will run a 27x10
Warhorse ur the third i heard that 3.90s whine so I won't do those..thanks

Both mrpsi and warhorse are very knowledgeable as I can see. Between both ur honest opinion please...

---

if you skip the 3.90 do as what i recommend and what warhose suggested. Just tailor the correct matchign tire to maximize et. One of the biggest rookie mistakes i see people due is not put a set of low gears becuz traction will be lost but that is not the way you should go aboout it, i hear this all the time, go with this gear "becuz you wont have traction with 4.10 or 4.30 blah blah blah", if you dont have traction you dont fix the problem by detuning the gear or blaming it on the gear, what you do is get a better tire or work on the suspension. Or ill see some morons go straight from a 26" slick to a 28" slick to cure their tractoins problems, but they end up not going as fast becuz now their turning 28" vs 26" slick. When i say get a better tire i mean same diameter but just a overal better tire. Before some one says a 28" slick is better needs to not even begin to argue considering that their are guys that have low 9sec car on a 26et drag slick, sure they have badass suspension but that is the right way to do it. I will give you realworld experience on this, i was at sac raceway pit crewing for a buddys notchback 331 stroker, the guy was having traction issues, he was spinning halfway through 1st gear and was running 12.4 on 275/40/17 drag radials, so everyone and their mother told him to throw on a 28 slick and he will go way faster,sure ull go faster but not faster than a 26", and i just about laughed my ass off,i let him throw on his 28 slicks and he ended up going 12.15 and everything was all hip hip hooray, so i happened to lend him a set of 26" et drags from someone else and threw them on the car and said now go run your car, funny thing is he clicked of a 11.95 and everyone else then shut the hell up and couldnt believe it, you should of seen their faces priceless. In my opinion 28" should only be on 9sec cars and lower, high hp cars, or the new 5.0 considering their 1to1 being 5th which you dont want to shift into, which is why all the fast guys are running 28 cuz they have no other option,and want to ride out 4th gear, just the way the car was fucked from the factory.

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[ 2013-07-04, 01:59 AM: Message edited by: Mr.10psi ]
 

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Posted by KCmustangboy (Member # 1927) on :
 
I have had 4.10s in half of my mustangs.... The other half I just drove around wishing I had 4.10s.
 

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Posted by Mach916 (Member # 8264) on :
 
373s... otherwise at road course events you will run out of gear.. plus it will drive much better with less gear..
 

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Posted by Luke87GT (Member # 21) on :
 
For years I was a "don't fear the gear" sort of guy.

These days I prefer a street friendly 3.55 or 3.73
 

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Posted by alexv (Member # 13018) on :
 
I wish gears were easy to install, that way I could try out a few to see which one feels the best
 

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Posted by Southbay07S197 (Member # 13053) on :
 
6 speed 4:10 would be great. 5 speed 3:55 or 3:73...I have a 5speed and 3:55 is fun for freeway runs 3:73 for dig races
 

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