Help tuning a Shelby.

[dylpro]

I'm trying to tune my Shelby Cobra Chromeline for drag, but having a lot of trouble with it. I'm sure it's in the transmission where I'm having my difficulties. One I get to 3rd gear I lose all power in the car, and it's incredibly slow. Can anyone give me some pointers on tuning this car? I've tried so many times and just can't seem to get it right!

 

[greedygenius]

I'm trying to tune my Shelby Cobra Chromeline for drag, but having a lot of trouble with it. I'm sure it's in the transmission where I'm having my difficulties. One I get to 3rd gear I lose all power in the car, and it's incredibly slow. Can anyone give me some pointers on tuning this car? I've tried so many times and just can't seem to get it right!

Ill assume your trying to tune it for 1/4 mile but you need to set up the suspension,look at every drag tune that exists, look at the suspension tunes for similar light weight FR cars that are tuned by some of the better tuners,karo,simple matt ect..if you see something most of them use on every rwd car then use it.You should see a few things btw.As far as the trans goes you need to stretch/flip...with most high hp rwh cars your gonna need to start in 2nd so.Reset the trans to default and for example say the stock final is 3.400 and the lowest it can go is 2500. Usually your gonna want to drop that to .300-.600 ABOVE the lowest setting.SO you move the final to 2800 then take the top speed all the way down to left, you set your 6th or last gear to its shortest setting(to right) and then you set 1st and or 2nd to the longest setting and then you drop the final gear all the way down to its lowest setting 2500 dont touch the final after this unless you want to redo it...If at 2500 you cant adjust 1st or 2nd gear because it spins too much off the line then you need to go from a starting flip of 2800 (.300 above low) to say 3000 and then drop it .500. The bigger the number between where you flip the trans and the lowest final gear the more top end it will have and the less power at take off,which is what you want in rwd car that spins alot....now for example if you flipped it from 2800 to 2500 and launched it first and it bogged down really bad then you wasnt to decrease the difference between flip and the lowest final gear.....2700 to 2500 for example...as far as your actual gears go you want the lines to gradually go from long to short for awd cars or other cars that dont spin too bad or you want them usually on rwd cars to have long 1st and 2nd gear then high straight across lines on rwd cars

 

[greedygenius]

all wheel drive rear wheel drive
1 2 3 4 5 6 1 2 3 4 5 6
ii ii ii ii ii iii II IIIIIIII II
ii ii ii ii ii IIIIIIII II II
ii ii ii II IIIIII II II
ii ii IIII
ii II I

this is all messed up pretty good the areas theres supposed to be spaces i had to use smiles because it tried to mash it all togeter when i posted it.But anyways the ii are the gear lines

 

[Mikeybc]

Ingenious

 

[greedygenius]

Ingenious

lol i tried man, I tried to make it so he could see what i ment even if reaidng it didnt make sense but not sure if he will lol

 

[seanneedscar]

Here is my suspension

Suspension:
-20 / +40 [+40 / +40 for ssrx]
2.4 / 2.1
10 / 1
1 / 10
1 / 1

5.5 / 0.0
-1.00 / +1.00

My transmission top of box is 185mph and I launch in 2nd gear

This car has a fudged up 1 to 2. so launch in 2nd

Also. the non chromeline version is faster

how are you setting up your transmission?

 

[dylpro]

Ill assume your trying to tune it for 1/4 mile but you need to set up the suspension,look at every drag tune that exists, look at the suspension tunes for similar light weight FR cars that are tuned by some of the better tuners,karo,simple matt ect..if you see something most of them use on every rwd car then use it.You should see a few things btw.As far as the trans goes you need to stretch/flip...with most high hp rwh cars your gonna need to start in 2nd so.Reset the trans to default and for example say the stock final is 3.400 and the lowest it can go is 2500. Usually your gonna want to drop that to .300-.600 ABOVE the lowest setting.SO you move the final to 2800 then take the top speed all the way down to left, you set your 6th or last gear to its shortest setting(to right) and then you set 1st and or 2nd to the longest setting and then you drop the final gear all the way down to its lowest setting 2500 dont touch the final after this unless you want to redo it...If at 2500 you cant adjust 1st or 2nd gear because it spins too much off the line then you need to go from a starting flip of 2800 (.300 above low) to say 3000 and then drop it .500. The bigger the number between where you flip the trans and the lowest final gear the more top end it will have and the less power at take off,which is what you want in rwd car that spins alot....now for example if you flipped it from 2800 to 2500 and launched it first and it bogged down really bad then you wasnt to decrease the difference between flip and the lowest final gear.....2700 to 2500 for example...as far as your actual gears go you want the lines to gradually go from long to short for awd cars or other cars that dont spin too bad or you want them usually on rwd cars to have long 1st and 2nd gear then high straight across lines on rwd cars

Yes 1/4 mile sorry, I forgot to mention that. But I believe I understand what you're saying. I don't on the other hand understand the smilies?

I'm not new to drag racing, but I'm certainly no expert. I've always had an interest in it in GT5. My best tunes on my SVT Mustang and Ford GT I believe were just lucky, haha. But thank you.

Here is my suspension

Suspension:
-20 / +40 [+40 / +40 for ssrx]
2.4 / 2.1
10 / 1
1 / 10
1 / 1

5.5 / 0.0
-1.00 / +1.00

My transmission top of box is 185mph and I launch in 2nd gear

This car has a fudged up 1 to 2. so launch in 2nd

Also. the non chromeline version is faster

how are you setting up your transmission?
[quote/]

I don't even know my trans right now. I'm going to reset it and try what greedygenius said to do. And I know the non chromeline may be faster, but the only reason I'm using my chromeline is because back in my noob days I fully tuned most of my chromelines. Now I wish they were just stock. So I don't have a use for the cobra other than drag racing now, so even if it's a bit slower than some cobras, I just want it to beat some, I know I'll lose to some though. It's inevitable really. But thanks for the suspension setup, I'll give it a try.

 

[greedygenius]

Yes 1/4 mile sorry, I forgot to mention that. But I believe I understand what you're saying. I don't on the other hand understand the smilies?

I'm not new to drag racing, but I'm certainly no expert. I've always had an interest in it in GT5. My best tunes on my SVT Mustang and Ford GT I believe were just lucky, haha. But thank you.

Here is my suspension

Suspension:
-20 / +40
15.4 / 2.1 idk what the min and max is for springs on cobra but front should be high rear low
10 / 1
1 / 10
1 / 1

5.5 / 0.0
-1.00 / +1.00

My transmission top of box is 185mph and I launch in 2nd gear

This car has a fudged up 1 to 2. so launch in 2nd

Also. the non chromeline version is faster

how are you setting up your transmission?
[quote/]

I don't even know my trans right now. I'm going to reset it and try what greedygenius said to do. And I know the non chromeline may be faster, but the only reason I'm using my chromeline is because back in my noob days I fully tuned most of my chromelines. Now I wish they were just stock. So I don't have a use for the cobra other than drag racing now, so even if it's a bit slower than some cobras, I just want it to beat some, I know I'll lose to some though. It's inevitable really. But thanks for the suspension setup, I'll give it a try.

The smileys was no what i ment to do i had to use them as "spaces" because it smushed all the stuff i typed in teh reply box together when i went to post it....ill post below this one what the gear lines should look like if i can. The I's are the gear lines them self the x's will be spacers or whatever so it doesnt smush it together.This VVVVV is about as good as your gonna get you can see th1st 2 gears in red the last 3 are the I's going straight up and down

xxxxx1xxx2xx3x4xx5x
xxxxx /xxx/xxIxxIxxIx
xxxxx/xxx/xx IxxIxxIx
xxxx /xxx/xxxIxxIxxIx
xxx /xxx/
xxx/xxx/
xx/ xx/

 

[seanneedscar]

15.4 / 2.1 idk what the min and max is for springs on cobra but front should be high rear low

I like how, in the same sentence you say

"i dont know what this should be"

"but it should be this"

my Cobra runs the same time as KaroSVTR's. so trust me, leave my suspension how it was, if you want a fast Cobra.

 

[KTalloutdrags]

I like how, in the same sentence you say

"i dont know what this should be"

"but it should be this"

my Cobra runs the same time as KaroSVTR's. so trust me, leave my suspension how it was, if you want a fast Cobra.

whats the time on it?

 

[greedygenius]

I like how, in the same sentence you say

"i dont know what this should be"

"but it should be this"

my Cobra runs the same time as KaroSVTR's. so trust me, leave my suspension how it was, if you want a fast Cobra.

I like how you totally misquote me,I didnt say i dont know what the settings should be. I said I dont know what the lowest setting is or what the highest is numerically.I gave him the settings that is used on 90% of the FR cars as a starting point Min front ride max rear....higher spring on front then back.I gave him my opinion just like you have him yours let him decide what works for him and what he wants to use.He might not like either at all and use totally different setup and be fine.Its not like im trying to sabotage his car or tune lol...hop off man damn believe it or not your opinion is not the end all be all im not saying your wrong or im right but either way no need to act like a dick when im trying to help the guy thats asking for help just like you are.

 

[seanneedscar]

whats the time on it?

I like how you totally misquote me,I didnt say i dont know what the settings should be. I said I dont know what the lowest setting is or what the highest is numerically.I gave him the settings that is used on 90% of the FR cars as a starting point Min front ride max rear....higher spring on front then back.I gave him my opinion just like you have him yours let him decide what works for him and what he wants to use.He might not like either at all and use totally different setup and be fine.Its not like im trying to sabotage his car or tune lol...hop off man damn believe it or not your opinion is not the end all be all im not saying your wrong or im right but either way no need to act like a dick when im trying to help the guy thats asking for help just like you are.

You can give him all the help you want. But don't critique my tune that I give someone else, if you yourself do not know what works best for that *particular* car. You will find people will get quite upset at that 👍

And for the record actually very few FR cars benefit from max front spring rate and minimal rear. Thats more MR setup

 

[greedygenius]

You can give him all the help you want. But don't critique my tune that I give someone else, if you yourself do not know what works best for that *particular* car. You will find people will get quite upset at that 👍

And for the record actually very few FR cars benefit from max front spring rate and minimal rear. Thats more MR setup

Like i said i gave him my opinion just like you did,if you dont like my opinion thats fine but thats not gonna keep me from giving it to him or anyone else

 

[KTalloutdrags]

You can give him all the help you want. But don't critique my tune that I give someone else, if you yourself do not know what works best for that *particular* car. You will find people will get quite upset at that 👍

And for the record actually very few FR cars benefit from max front spring rate and minimal rear. Thats more MR setup

nice time, i may have to take a shot at it today. im at .46x so ill see what i can do.

 

[dylpro]

Yes 1/4 mile sorry, I forgot to mention that. But I believe I understand what you're saying. I don't on the other hand understand the smilies?

I'm not new to drag racing, but I'm certainly no expert. I've always had an interest in it in GT5. My best tunes on my SVT Mustang and Ford GT I believe were just lucky, haha. But thank you.




The smileys was no what i ment to do i had to use them as "spaces" because it smushed all the stuff i typed in teh reply box together when i went to post it....ill post below this one what the gear lines should look like if i can. The I's are the gear lines them self the x's will be spacers or whatever so it doesnt smush it together.This VVVVV is about as good as your gonna get you can see th1st 2 gears in red the last 3 are the I's going straight up and down

xxxxx1xxx2xx3x4xx5x
xxxxx /xxx/xxIxxIxxIx
xxxxx/xxx/xx IxxIxxIx
xxxx /xxx/xxxIxxIxxIx
xxx /xxx/
xxx/xxx/
xx/ xx/

This is a general question for drag tuning. Should springs be generally harder or softer? And harder in the front and softer in the rear?

 

[seanneedscar]

This is a general question for drag tuning. Should springs be generally harder or softer? And harder in the front and softer in the rear?

There is no general answer for that. Every car is different

The Cobra likes fully soft front and rear. The GTR likes fully hard front and rear

Every time you tune a car, do this:

Awd: Max/Max
FR: Min/Max
MR: Max/Min
FF: Min/Max

start off with these settings and then fine tune them through trial and error with SSRX.

 

[dylpro]

There is no general answer for that. Every car is different

The Cobra likes fully soft front and rear. The GTR likes fully hard front and rear

Every time you tune a car, do this:

Awd: Max/Max
FR: Min/Max
MR: Max/Min
FF: Min/Max

start off with these settings and then fine tune them through trial and error with SSRX.

Thanks. That's helpful.

Okay, my Cobra WAY better now. I know everyones saying launch in second but I'm personally getting the best results in 3rd. It's still not the best, not near your time sean, but it's far better than what my old tune was getting.

Thanks everyone! This is the first time I've had a pleasant experience in the drag tuning section of these forums. Glad to see the people here have become more friendly and helpful than a few months ago.

 

[Slash]

lol i tried man, I tried to make it so he could see what i ment even if reaidng it didnt make sense but not sure if he will lol

For a min I was like WTF is that then I was like DAYUM.

At dyl, I've found front end heavy RWD cars under 860hp like soft front/high rear spring rates.

 

[greedygenius]

For a min I was like WTF is that then I was like DAYUM.

At dyl, I've found front end heavy RWD cars under 860hp like soft front/high rear spring rates.

lol yeah after some extensive research ive found the best way to do it,

.................1....2...3...4..5....6
................/...../..../.../.../..../<
.............../...../..../.../.../..../<^6th should be the at shortest setting (bar all the way to the right before
............../...../..../.../.../..../<and after you flip the trans)
............./...../..../
............/...../
.........../...../
..........^......
.........1st or whatever gear you are using to launch should in most cases be as long(slide bar all the way to the left)If possible some cases you cant because it will make your top speed/6th gear too long or too short

 

[Slash]

There is no general answer for that. Every car is different

The Cobra likes fully soft front and rear. The GTR likes fully hard front and rear

Every time you tune a car, do this:

Awd: Max/Max
FR: Min/Max
MR: Max/Min
FF: Min/Max

start off with these settings and then fine tune them through trial and error with SSRX.

I've hit 9.4s with a hard rear Cobra

 

[greedygenius]

I've hit 9.4s with a hard rear Cobra

yeah ive done it with hard front soft rear also....thats why i dont understand sean acting like what i Told him is wrong.Theres multiple ways on most cars to run the same times,why everyone thinks theres a certain perfect tune for everycar is beyond me..

 

[Master__Shake_]

Each car has many setups that work differently. He might have a different tranny that likes a harder rear-end for launch, while you have one that favors a soft one. Each time I rework a transmission I adjust spring rates and toe ratios to figure out if I've got the right setup.

 

[Slash]

yeah ive done it with hard front soft rear also....thats why i dont understand sean acting like what i Told him is wrong.Theres multiple ways on most cars to run the same times,why everyone thinks theres a certain perfect tune for everycar is beyond me..

I did it unbroken too. I start with a mild suspension tune, then a tranny and see what it likes.

Each car has many setups that work differently. He might have a different tranny that likes a harder rear-end for launch, while you have one that favors a soft one. Each time I rework a transmission I adjust spring rates and toe ratios to figure out if I've got the right setup.

Yup like I said, I alternate.

 

[greedygenius]

I did it unbroken too. I start with a mild suspension tune, then a tranny and see what it likes.



Yup like I said, I alternate.

same here i pretty much use 3 totally different tunes for each car,depending on indy/ssrx...if i feel like running manual or auto,slower/faster....also usually keep a tune for the e-cheat on rwd incase someone decides they are slick lol.

 

[Slash]

I tune, if its good I copy it to another sheet to tweak it and see if I can get it better. If not, I have something to fall back on.