This is topic gear ratio in my cobra in forum Tech Talk at Northern California Ford Owners  .


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Posted by the50ho (Member # 73) on :
 
well, I'm basically at the point where I believe 4.10's are the right choice.

I'll be putting these in my 98 cobra. It's basically exauhst and a couple small bolt ons....nitrous, and going to be blown within 6 months. Unfortunatley..I can not really afford to go crazy N/A (even though that's what I'd rather do)...

Keep the nitrous and blower in mind when dropping suggestions.

I've heard anything from 3.73 (no thanks) to 4.56's...
 

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Posted by the50ho (Member # 73) on :
 
also, what gear correction will I be using for each ratio? thanks!
 

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Posted by racercosmo (Member # 1864) on :
 
I would go with 4.10s if this is a daily driver mainly. The Abbott speedo corrector is what I use.
 

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Posted by st5150 (Member # 51) on :
 
My opinion goes like this....


NA: 4.56's
Nitrous: 4.30's
Blower: 4.10's
 

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Posted by ON N2O (Member # 2067) on :
 

quote:

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Originally posted by st5150:
My opinion goes like this....


NA: 4.56's
Nitrous: 4.30's
Blower: 4.10's

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what about twin turbos???
 

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Posted by the50ho (Member # 73) on :
 

quote:

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Originally posted by ON N2O:

quote:

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Originally posted by st5150:
My opinion goes like this....


NA: 4.56's
Nitrous: 4.30's
Blower: 4.10's

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what about twin turbos???

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You and I think ALOT alike If I could find a kit with a carb # on, it would be on the car in no time .

So, yeah, if you see one, PLEASE PLEASE PLEASE let me know! wooooooooooooooooshhhhhh
 

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Posted by stangin' (Member # 514) on :
 
if you will STAY N/A go with 4.56s. i currently have them on my cobra. it's not as bad as you think with these 4V motors. i still get 20-21mpg. i had 4.10s, but after a year or so it felt like it wasn't enough gear. if you want to compromise, 4.30s should be good.

with 4.10s my best was a 13.4 @104.5xx with a 1.999 60ft. i haven't had the chance to test out the 4.56s yet.
 

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Posted by the50ho (Member # 73) on :
 

quote:

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Originally posted by stangin':
if you will STAY N/A go with 4.56s. i currently have them on my cobra. it's not as bad as you think with these 4V motors. i still get 20-21mpg. i had 4.10s, but after a year or so it felt like it wasn't enough gear. if you want to compromise, 4.30s should be good.

with 4.10s my best was a 13.4 @104.5xx with a 1.999 60ft. i haven't had the chance to test out the 4.56s yet.

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quote:

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Originally posted by the50ho:

quote:

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Originally posted by ON N2O:

quote:

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Originally posted by st5150:
My opinion goes like this....


NA: 4.56's
Nitrous: 4.30's
Blower: 4.10's

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what about twin turbos???

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You and I think ALOT alike If I could find a kit with a carb # on, it would be on the car in no time .

So, yeah, if you see one, PLEASE PLEASE PLEASE let me know! wooooooooooooooooshhhhhh

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well i got my TDC kit, and it doesnt have a carb # but oh well....

Carb kits were made by incon. Pwr4all3 has one for sale. brand new he was saying and all coated.... check it out and do it.

then we can be twin turbo brothers
 

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Posted by ON N2O (Member # 2067) on :
 
oh wait you got a 98.... twin turbo kit for your cobra thank me later
 

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Posted by J's DDLY SNK (Member # 2016) on :
 
I say go with the 4.10's if a blower is around the corner.

I went with 4.30's because I plan on keeping it N/A for a while.

Good Luck
 

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Posted by Rev Happy (Member # 661) on :
 
What are your plans for the car? Meaning do you plan on racing it at the track a lot, or just mainly pimping it on the street? On the street you will have absolutely no traction with 4.10s + and a blower unless you're on E.T. streets... Just something to think about if you're not going to take it to the track a lot...

I run 4.30s in my N/A Cobra and have basically all the bolt-ons except headers... On the street, its fine as I usually just cruise in 5th... On the highway, the gears keep me from speeding as I like having the tach around/under 3000rpm...(80mph) Plus my car is pretty low in the front so not speeding keeps the car from getting jumpy on the bumps in the road... If I was putting a blower on my car now, I would definetly step down from 4.30s since I wouldn't be going to the track all the time... I would probably put in 3.73s or 3.90s...

later,

-Mike

[ October 13, 2003, 07:58 PM: Message edited by: Rev Happy ]
 

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Posted by 97 slobra (Member # 3494) on :
 
so what gear ratio would u recomend to get the best performane 3:73, 4:10, or 4:30 runnin with a 100 shot
 

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Posted by st5150 (Member # 51) on :
 

quote:

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Originally posted by 97 slobra:
so what gear ratio would u recomend to get the best performane 3:73, 4:10, or 4:30 runnin with a 100 shot

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