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Discussion Starter #1
Hello everyone,

I have an 05 GT 5spd that is 100% stock, and I really want gears. The car is an everyday driver and will rarely be at the track. So what is the right size?
 

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deffienetly 4:10s in over drive (5th) youll still be able to crusie and it will leave some room for future performance mods but if your planning on getting real fast the gears will be toom much but it sounds like youll be right on the money with 4:10s
 

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Hello everyone,

I have an 05 GT 5spd that is 100% stock, and I really want gears. The car is an everyday driver and will rarely be at the track. So what is the right size?
Tell me what size tires you're running and I can tell you the rpm difference you'll be looking at.
 

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Hello everyone,

I have an 05 GT 5spd that is 100% stock, and I really want gears. The car is an everyday driver and will rarely be at the track. So what is the right size?

I vote 4.10s too! :bigthumbsup
 

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Discussion Starter #7
"Tell me what size tires you're running and I can tell you the rpm difference you'll be looking at"


17" All season tires, Ford oval center cap.
 

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Discussion Starter #9
Thanks for all the help. I'm going with the 4.10s!!
 

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I'd recommend 4.10s unless you plan to add forced induction down the road.
What do you recomend if you do plan on forced induction?
 

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I would recomend 3:73's.
What about an off size like 3.90? I plan to turbo mine eventually, but that's not for another year or so or until I have funds to buy a second block to build up. So I would like to make a nice twisty track car and I'm not sure which gears to get for road racing.
 

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A good portion of the FI guys go with 3.73s or 3.90s. Seems 4.10s can be a little much on the street. But.. There still are quite a few who run 4.10s.
Yep, like me. But with the 325/45/17--those are 28 tall so the 4.10's are really 3.90's.
 

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4.10 no question.
 

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I run a 28" tire too (295-45-18). Just takes a little of the edge off and does help lower the cruising rpms.
I'm myself is thinking of going to a 4.30 from 4.10 to leave alittle harder at the track. My thought is to go to a 28" tire on the street,to take the edge off the rpm's. At the track I run 26" D.R.s. How do like driving on the 28"s ? What brand of tire are you running? I currently have BFG kdws2 radials and love um. But they don't have a 295/45/18 .
 

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I'm myself is thinking of going to a 4.30 from 4.10 to leave alittle harder at the track. My thought is to go to a 28" tire on the street,to take the edge off the rpm's. At the track I run 26" D.R.s. How do like driving on the 28"s ? What brand of tire are you running? I currently have BFG kdws2 radials and love um. But they don't have a 295/45/18 .
I'm running Nitto 555s. Even with the 28" tire I was still bumping a 6600 rev limiter frequently with 4.30s. :so
 
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