3.45 diff into an EA - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

FoMoCo4eva · 06-01-2002, 02:22

ok I have a EA Fairmont Ghia, 3.9mpfi, 3 speed auto (i know it sucks)...i haven't put pics up yet but u couldn't even tell its an EA.

Anyway...to me the take off is near pathetic, so i have heard people talking about a 3.45 diff, i know that they do but would get make that much of a difference??

am i right ihn saying that atthe moment it has a 2.92?

how much would one set me back to get put in?

EDXR8 · 06-01-2002, 04:10

My EA 3 speed auto has a 3.08 ratio LSD in it. With the 3 speed auto, the 3.45's may be a bit steep. Maybe go for 3.23 ratio instead.

LTDHO · 06-01-2002, 05:40

IMO I'd go straight to 3.45, my LTD has 3.27 and I'm not happy with it. I'd go 3.45 with a 3 speed or 3.7 with a 4 speed auto.

Futura97 · 06-01-2002, 05:47

Quote:

am i right ihn saying that atthe moment it has a 2.92?

I think that EA 3spds had a 2.77 in it, and the 4 spd auto/5 spd man had the 2.92 in it.

If you want to know for sure, have a look under the rear. Theres a tag hanging of the diff with the ratio on it.

Cheers
Mayy

FoMoCo4eva · 06-01-2002, 07:24

yeah thanks guys...anyone know a ball park price for one?

Martin · 06-01-2002, 08:01

You do realise the RPM at highway speeds will be 3500Rpm or so?

Better off doing a manual conversion.... (Or both :bs3: )

gravelrash · 06-01-2002, 13:52

your highway speed is 1 to 1 gear will be about 2900 - 3000 rpm. not much different to what it would be doing with 3.23 gears. has to be in third running 1 to 1.

ChuBBz · 06-01-2002, 20:25

i bought my 3.45 LSD for $1000 (reconditioned)... ive had problems with it Seizing up completely just a few months after getting it fitted. So im sayin... if your gonna buy a diff... BUY IT NEW.. or at least make sure the second-hand warranty is a loonnngggg one.

ChuBBz (never buying reco'd Sh#t again)

FoMoCo4eva · 06-01-2002, 20:36

Quote:

Originally posted by Martin
You do realise the RPM at highway speeds will be 3500Rpm or so?

Better off doing a manual conversion.... (Or both :bs3: )

yeah but im at uni and this is my first car...i dont have too much cash to spend on stuff.....yet

i got the car because it looked awesome (to me), i never wanted an auto but hey soemtimes you have to make sacrifices...

heres a pic from the dealer.....

FoMoCo4eva · 06-01-2002, 20:39

Quote:

Originally posted by Martin
You do realise the RPM at highway speeds will be 3500Rpm or so?

Better off doing a manual conversion.... (Or both :bs3: )

at the moment at 100k's it sits at approxmatly 2000....130k's its at 3000