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bmac 08-10-2007 12:49 AM

Question on 4:10 Gears
 
I see a lot of discussion on 4:10 vs 3:73 gears. Based on the discussion I have decided to go with the 4:10 Ford Racing gears in my standard 2006 GT. Right now the car is stock (I believe with 3:31 ?), with the gears I am also going to install intake, long tube headers, exhaust, short shifter and programer. Any other recomendations on upgrades I should/need to do to accomodate the new gear ratio? One concern is that I should also upgrade the differential, maybe to Trutrack, I discussed with the mechanic and he doesn't feel that I require the upgrade. Keep in mind that I don't race or take this car to the track, just want to get a little more out of it.

Also, I have seen some discussion on highway driving with 4:10's, and most people feel that it is still a reasonable highway ride. Most say at 75-80mph the RPM's are in the 2500-3000 range. I was wondering if anybody has any experience with top end highway speed (say at 5000 RPM)?

Any feedback would be appreciated, thanks.


Apoptosis 08-10-2007 12:56 AM

RE: Question on 4:10 Gears
 
3.73's are a waste unless you are boosted, and 4.10/4.30 are myfavorites.

You don't need a new differential, the stock one is fine.

Most people claim 19-20 MPG with 4.30's on highway runs, soo 4.10's should be fine.

Other good mods, that aren't a must have:
- Aluminum Drive shaft (15 RWHP)
- Under drive Pulleys (10ish RWHP)
- Charge motion dleete plates (Supposedly 10 RWHP and a better top end)
- O/R H or X pipe (3-5ish RWHP)

bmac 08-10-2007 01:23 AM

RE: Question on 4:10 Gears
 
Thanks for the feedback.

I was talking to a guy from work today and he kind of scared me on the 4:10's. He said in his mustang, which is basically a whole collection of parts from the early to mid 90's vintage that he wishes he didn't put in the 4:10's because all he does is shred rubber and the first gear is basicaly useless . But reading the forums of the 2005+ vintage cars everybody seems to indicate that 4:10's are fine for a regular street car.

Apoptosis 08-10-2007 01:41 AM

RE: Question on 4:10 Gears
 

ORIGINAL: bmac

Thanks for the feedback.

I was talking to a guy from work today and he kind of scared me on the 4:10's. He said in his mustang, which is basically a whole collection of parts from the early to mid 90's vintage that he wishes he didn't put in the 4:10's because all he does is shred rubber and the first gear is basicaly useless . But reading the forums of the 2005+ vintage cars everybody seems to indicate that 4:10's are fine for a regular street car.
The 05+ GT is hardly the same as a vintage stang.

I personally would say 4.30's for a Standard. But that's just me.

mygt500 08-10-2007 02:25 AM

RE: Question on 4:10 Gears
 
4:10's should be fine and many on here have no problems with using them for a DD. Is your car a stick or auto? Does standard mean auto? If not than your stick is a 3:55...regardless go for the 4:10's you wont regret it.

surf808 08-10-2007 02:34 AM

RE: Question on 4:10 Gears
 
I plan on getting some 4.10 gears also. Another thing you might want to look at are some new control arms. That will help get the rear to stick to the ground and remove any wheel hop you may get.

GT500OC 08-10-2007 03:12 AM

RE: Question on 4:10 Gears
 

ORIGINAL: bmac

I see a lot of discussion on 4:10 vs 3:73 gears. Based on the discussion I have decided to go with the 4:10 Ford Racing gears in my standard 2006 GT. Right now the car is stock (I believe with 3:31 ?), with the gears I am also going to install intake, long tube headers, exhaust, short shifter and programer. Any other recomendations on upgrades I should/need to do to accomodate the new gear ratio? One concern is that I should also upgrade the differential, maybe to Trutrack, I discussed with the mechanic and he doesn't feel that I require the upgrade. Keep in mind that I don't race or take this car to the track, just want to get a little more out of it.

Also, I have seen some discussion on highway driving with 4:10's, and most people feel that it is still a reasonable highway ride. Most say at 75-80mph the RPM's are in the 2500-3000 range. I was wondering if anybody has any experience with top end highway speed (say at 5000 RPM)?

Any feedback would be appreciated, thanks.


BMR rear control arms (withrelocation brackets)
BMR Adjustable Pan hard Bar
BMR Upper Control Arm (third link)
One piece drive shaft (aluminum orcarbon fiber $$)
Sub frame connectors (optional)

That will be a good start and eliminate your wheel hop completely and you will launch very-very straight. You should figure about 140-150 MPH with the 4.10's if you have the torque to push thatbox through the air (I have the same shape box myself).

GT500OC

Daniel60 08-10-2007 07:38 AM

RE: Question on 4:10 Gears
 
Can you out run that GT with the 700 horses? Either way that is a Nasty Stang.


(Tried Copying a picture from his pictures but didn't appear) The GT I was referring to was a Ford GT with what 550 horses?

Daniel60 08-10-2007 07:44 AM

RE: Question on 4:10 Gears
 
Personally I love my 4:10s. It was the quickest thing I could do for making performance. Second was my Brenspeed Tune it made the car totally a pulling machine. Believe it or not I do.... I do like the Steeda Pulleys. Finally nothing sounds sweeter than a Stang with some muscle sound, this I'm referring is to the Mac Axle-Backs. Next for me will probably be the drive shaft.. I have to be patient though because my wife isn't patient with my greed for speed. One more thing if you have 3:31s' than going to 3:73s' isn't a bad decision. I've been told that 3:73s' are the best gear forany car. Personally I like the 4:10s but some people rag me saying I'm giving up top end. They are the same people who never go top end either. Good luck.

1BADD05 08-10-2007 07:57 AM

RE: Question on 4:10 Gears
 
I have a manual with the 4.10's and love them, fine on the freeway no problems here at all!


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