Who here is running 4.10's with an AOD?

[MY 85 GT]

I was told i should run 4.10's who here is running them with an AOD....what are you taching at 3000 rpms...how does the car drive..any help would be great thanks......

 

[ryan218]

i have 3.73's and a aod right at 65mph im at 2,000 rpm. with 4.10's i think around 2,300-2,500 at 65 ?

 

[MY 85 GT]

i have 3.73's and a aod right at 65mph im at 2,000 rpm. with 4.10's i think around 2,300-2,500 at 65 ?

HUH????...My 93 GT vert has 3.27's and at 65 in OD im at 2000 rpms.....I drive it on the parkway everyday so im sure im at 2000 at 65..lol....i would think you would be more with 3.73's no?

 

[ryan218]

HUH????...My 93 GT vert has 3.27's and at 65 in OD im at 2000 rpms.....I drive it on the parkway everyday so im sure im at 2000 at 65..lol....i would think you would be more with 3.73's no?

OD in yours work? in OD im at 2,000 out of OD im closer to 3,000. and before you ask yes they are 3.73's, i put them in myself. maybe the aod from 89 to the 93 had a different geared OD?

 

[MY 85 GT]

OD in yours work? in OD im at 2,000 out of OD im closer to 3,000. and before you ask yes they are 3.73's, i put them in myself.

Yea my OD works fine...Im telling you im at 2000 rpms at 65 mph....unless some changed my gears...my door tag says 3.27's......if im in D at 40 mph im a little over 2000 rpms....

 

[foxmustangman]

I've got 4.10s and an AOD.

2nd gear @ 3K is 35
3rd gear @ 3K is about 55 mph
4th gear @ 2K is also 55
4th gear @ 3K is like 75 or 80

 

[Adams91LX]

My super slow 2.73's keep me a cool 90mph at 2,000

But it takes 15 minutes to get there :/

1st gear 0-60 ftl

 

[mustangking101]

ive got 4.10s

i have 4.10s on my 94 vert gt
i love the power and acceleration of it.
i dont think i would want to go any higher though just bcasue on the highway around 80 ish the rpms are kinda high and it wants to slow down a lot but there tight other than that

 

[85_SS_302_Coupe]

Ryan i'd check your speedo gear...you should be more like 2200-2300 with 3.73s unless your rear tires are really tall. I also wouldn't run anything less than 4.10s with an automatic.

 

[white 89 GT]

I have 3.73`s with 3500+ stall and no lockup and 60mph is like 2600 rpm.
And if I had 4.10`s I would never get to the 1320 mark below 7000 rpm I also have a 26" tire (275x50x15 mt dr`s) I need 27 or 28".
If your going to go 4.10`s first think about what tire size you will have and converter stall and lockup or no lockup.

 

[SFC_R0CK]

I run 4.10's with 245/50/16 tires at 2400-2500 rpms at about 65-70 mph in my 89 vert.

 

[25thmustang]

Ryan did you calibrate it after the gear swap? That would read faster than your actually going at a certain RPM?