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post #1 of 16 (permalink) Old 12-04-02, 03:52 AM Thread Starter
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Questions About E-Series Diff Ratios

Hey guys, just wondering if anyone can help me out.

Im looking to find out what diff-ratios different EA-ED models had, and if the diffs are fairly interchangeable within the EA-ED models.

Thanks Any info would be appreciated.
Scott.

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post #2 of 16 (permalink) Old 12-04-02, 04:11 AM
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According to the owners manual, 292, 308 and 323 depending on model (fairmont, s pak etc) and transmission type.

ratio located on metal tag on housing
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post #3 of 16 (permalink) Old 12-04-02, 04:14 AM
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mine has a 3.27.

Signatures are for poofs !!

1993 EBII Fairmont Ghia 5.0L Wagon,
Lowered, Tinted, 17" Speedy Ravens & 2.5" Sports Exhaust.
( 1 of 26 built )

AND

1985 Telstar TX5 Turbo, stock as a rock.
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post #4 of 16 (permalink) Old 12-04-02, 08:00 AM
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Dont forget the 2.77 which is what I have in my EA Fairmont Ghia. Im looking to change to a 3.08 as a 3.23 might be a wee bit short for me. Im only guessing though. Anybody got input on that one?
EvilEA, I think they all fit.
Kev.
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post #5 of 16 (permalink) Old 12-04-02, 02:20 PM
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There are only small differences to the diffs ranging from the EA-ED series.
Besides the gear ratios, the tail shaft connection varies a little, however, these are easily interchanged.
The lower control arm on the EB/D uses a bigger bush then the EA. This is can also be fixed by either adding shims, or replacing the bush.

Once you get into the EF/L, you begin to have differences like where the handbrake cable runs. There are also differences in the rear discs, and control arms.

My Ghia came out with the 2.77 LSD, and I am now on my 3rd 3.23 LSD.

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post #6 of 16 (permalink) Old 12-04-02, 05:48 PM
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Bass Crazy, do you remember driving the car after the first 3.23 install. How did it feel compared to the 2.77? Whats your first gear ratio? Mine is 3.5[EA box]. If I get 60 kmh in first with a 2.77, Ill get 51 kmh with a 3.23. Second: 100 kmh[2.77] or 85 kmh[3.23]. Third: 150 kmh[2.77] or 128 kmh[3.23]. A 3.23 will give me 85.7% of the speed I used to get. Its a nice feeling doing 100 mph in third with two gears to go. Obviously not much chop for the 400 metres though. I suppose it depends on how much torque is available.
Cant make my mind up,
Kev.
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post #7 of 16 (permalink) Old 12-04-02, 06:35 PM
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also the xr's had a 3.45

EL driver...
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post #8 of 16 (permalink) Old 12-04-02, 06:56 PM
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So why am I the only one with a 3.27 ? Its stamped "high performance"... so is this an XR diff ?
When I rang a few diff places about getting a reco, no-one had heard of a 3.27..... but ive seen the ratio on the gears inside.

Signatures are for poofs !!

1993 EBII Fairmont Ghia 5.0L Wagon,
Lowered, Tinted, 17" Speedy Ravens & 2.5" Sports Exhaust.
( 1 of 26 built )

AND

1985 Telstar TX5 Turbo, stock as a rock.
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post #9 of 16 (permalink) Old 12-04-02, 07:59 PM
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according to fordinfo 3.27 came on ebII's. they may be on earlier models as well as they dont list every diff for each model. but it definately exists there under ebII manuals.
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post #10 of 16 (permalink) Old 12-04-02, 08:02 PM
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Quote:
Originally posted by eb_5litre
So why am I the only one with a 3.27 ? Its stamped "high performance"... so is this an XR diff ?
When I rang a few diff places about getting a reco, no-one had heard of a 3.27..... but ive seen the ratio on the gears inside.
XR's up to ED were fitted with 3.27 gears. Many people get confused by diff tags.
variations are: "High Performance" this means 28 spline axles fitted, and 4pin hemisphere.
"High performance Limited slip","High performance LSD" or "High performance SRD" means 28spline axles, 4 pin LSD hemisphere.
Any diff not carrying a "High Performance" tag will only have 25 spline axles and a 2 pin hemisphere, and yes you can get a LSD in this configuration.

If you're not driving a manual you're really just steering.
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