4.10's = Too much gear for autos?

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oldskooler79

New Member

Jan 7, 2004

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Cary, NC

Nov 9, 2004

#1

• Nov 9, 2004

• #1

I figure the time will come REALLY QUICK to start discussing gear ratios for the 05's. I know Fox AOD owners where thrilled to slap on 4.10's and AODE owners with their 4.10, 4.30, 4.56 N/A cars. Gears alone dramatically changed the output on such cars.

Fortunately...the 05' GTs are equipped with a 5-speed ATX. The current Hot Rod magazine states the drop from 1st to 2nd is only 1000 rpm. 2nd to 3rd only 1500 rpm. Clearly keeping the power in it's band. But- if this car is running out of 3rd at the end of the track, it kinda makes me wonder. Since gears and exhaust usually being the first mods we make... how limited will we be?

Any thoughts

 

95snoozer

Active Member

Dec 14, 2002

2,572

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48

RCR

Nov 15, 2004

#2

• Nov 15, 2004

• #2

no not at all.

I would say perfect all around gear

better get you some dfrag radials!!!

drag radials 4.10s and a stall I oculd see you going 13.0-13.2 on a descent track

 

R

Rumble

New Member

Nov 15, 2004

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Ontario, Canada

Nov 15, 2004

#3

• Nov 15, 2004

• #3

That's a lot of gearing, do you plan to drive this car mostly around town, how often will you be racing?

 

95snoozer

Active Member

Dec 14, 2002

2,572

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RCR

Nov 16, 2004

#4

• Nov 16, 2004

• #4

Rumble said:

That's a lot of gearing, do you plan to drive this car mostly around town, how often will you be racing?

Click to expand...

that is NOT alot of gearing with a 5speed auto

 

2005RedGT

New Member

Nov 7, 2004

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Nov 19, 2004

#5

• Nov 19, 2004

• #5

I just got back from the shop where I had 4.10 installed on my 2005 GT / Auto. It made a huge performance gain as well as off the line performance.

 

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AmazonRT05gt

New Member

Nov 18, 2004

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Nov 19, 2004

#6

• Nov 19, 2004

• #6

We should have our car Monday. As soon as I get it back to the shop 4.10's and the new converter goes in. I think the 4.10's will be a perfect combo with the auto and the close ratio it has.

Rick

 

C

Carlos

Founding Member

Dec 23, 1999

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Miami,FL

Nov 19, 2004

#7

• Nov 19, 2004

• #7

AmazonRT05gt said:

We should have our car Monday. As soon as I get it back to the shop 4.10's and the new converter goes in. I think the 4.10's will be a perfect combo with the auto and the close ratio it has.

Rick

Click to expand...

Should be a major improvement in feel and #s.

Carlos

 

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blackonblack05

New Member

Oct 27, 2004

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Indiana

Nov 20, 2004

#8

• Nov 20, 2004

• #8

for those of you that did put 4.10's in your 05' how many RPM's are you cruising at lets say 65mph or so??

 

2005RedGT

New Member

Nov 7, 2004

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Nov 21, 2004

#9

• Nov 21, 2004

• #9

2100 RPM at 65MPH in O/D

 

D

Darkhorse845

Banned

Nov 17, 2004

101

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Las Vegas,Nevada

Nov 21, 2004

#10

• Nov 21, 2004

• #10

4.10's Rule

 

351CJ

New Member

Dec 11, 2002

1,732

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Nov 21, 2004

#11

• Nov 21, 2004

• #11

Automatic
Stock 3.31 gears - OD
65 MPH - 1,900 RPM
75 MPH - 2,200 RPM
85 MPH - 2,500 PRM

3.73 gears - OD
65 MPH - 2,130 RPM
75 MPH - 2,460 RPM
85 MPH - 2,790 PRM

4.10 gears - OD
65 MPH - 2,340 RPM
75 MPH - 2,700 RPM
85 MPH - 3,060 PRM

Manual
Stock 3.55 gears - OD
65 MPH - 1,770 RPM
75 MPH - 2,040 RPM
85 MPH - 2,310 PRM

4.10 gears - OD
65 MPH - 2,050 RPM
75 MPH - 2,360 RPM
85 MPH - 2,670 PRM

IMHO, 4.10s are perfect for a manual tannie GT, but are too much for an auto.

If you do a lot of highway driving and have an automatic, I'd go with 3.73s.

 

D

Darkhorse845

Banned

Nov 17, 2004

101

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Las Vegas,Nevada

Nov 24, 2004

#12

• Nov 24, 2004

• #12

95snoozer said:

that is NOT alot of gearing with a 5speed auto

Click to expand...

Ditto!