4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

New to Mustang world 4.6L Part 3 (GEARS)

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Old 03-09-2007, 02:13 PM
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04MustangGT
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Default New to Mustang world 4.6L Part 3 (GEARS)

Hi all,

Thank you all for the edjucation in superchargers yesterday

The SC will have to wait. I found out on 2 sites that my gear ratio is 2.49, because it's an automatic. That needs to be changed. I want it @ 3.55 and not 4.10

Does anyone here have advise on what type and what brands and how do I know if it's an 8" or 8.8", etc...?

Please help.

Thanks

ponyrideGT2004.

p.s. My car is an automatic that's why I am going for the 3.55 gears.
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Old 03-09-2007, 02:57 PM
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8banger
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

2.49 gear ratio?Not the rear I hope....never heard of that one...should be 3.+ 3.27 is theusual...but auto ,not sure..Anything less than a 3.73 in the rear(auto or stick)is a waste of money and time....IMO...I've got 4.10's and a S/C and I think it just right..and yes I drive it on the highway..went to lexington awhile back...100 miles 1 way....no prob whatso ever....Yes its a 8.8.....motive gears or the frpp seem to be popular,,(frpp)people saythey are easier to setup...
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Old 03-09-2007, 03:02 PM
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DesertMach
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

My Mach came stock with the 3.55 and I went to 4:10 And totally love them, yes mine is also an automatic. You should have an 8.8 in a 2004 GT
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Old 03-09-2007, 03:09 PM
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Yellow Fever
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

Look at the tags on the rear diff cover.That will give you your gear ratio.What supercharger have you decided on ? Because I'll tell you which one NOT to use !
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Old 03-09-2007, 03:18 PM
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slow99GT
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

You have a 8.8 rear end.. and go with at least 3.73's!!!
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Old 03-09-2007, 03:22 PM
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slow99GT
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

Ohh yeah for got to mention go with Ford racing for the gears.
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Old 03-09-2007, 05:35 PM
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04MustangGT
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

ORIGINAL: 8banger

2.49 gear ratio?Not the rear I hope....never heard of that one...should be 3.+ 3.27 is theusual...but auto ,not sure..Anything less than a 3.73 in the rear(auto or stick)is a waste of money and time....IMO...I've got 4.10's and a S/C and I think it just right..and yes I drive it on the highway..went to lexington awhile back...100 miles 1 way....no prob whatso ever....Yes its a 8.8.....motive gears or the frpp seem to be popular,,(frpp)people saythey are easier to setup...
Sry I forgot to mention that I found out at this information, on the gear ratio, at this web-site (media.ford)

http://media.ford.com/products/press...amp;make_id=92

and here (car.com)

http://research.cars.com/go/crp/rese...p;aff=national
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Old 03-09-2007, 10:59 PM
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04MustangGT
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

ORIGINAL: Yellow Fever

Look at the tags on the rear diff cover.That will give you your gear ratio.What supercharger have you decided on ? Because I'll tell you which one NOT to use !
Thanks : ) My car is ratio is 3.27. I don't know where those 2 web-sites got there information from. Anyway I found it on the cover like u said. I really don't know what supersharger to decide on yet. I have lots of time to decide, but I will definetly keep you all informed.

Have a good weekend all.
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Old 03-09-2007, 11:27 PM
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Jaybird79
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Default RE: New to Mustang world 4.6L Part 3 (GEARS)

Isn't traction a big problem with 4.10s and street tires?
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