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Old 03-08-2004, 23:28   #1 (permalink)
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EA diff?

gday,

im just wondering wat the final drive ratio is in a stock EA falcon S MPFI?
cant seem to find the info anywhere else,
and why is it that VL commodores get a 3.9 final drive ratio? why ddint falcons get anything like that? is that because of gearing ratios and different power or wat?

cheers, alex
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Old 03-08-2004, 23:35   #2 (permalink)
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Re: EA diff?

series 1 auto mpfi and cfi got 2.77, manual cfi or mpfi got 2.92
series 2 auto cfi got 3.08, mpfi got 3.23 and manuals cfi or mpfi got 2.92

LSD was optional but standard on Ghia.
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Old 03-08-2004, 23:37   #3 (permalink)
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Re: EA diff?

cheers mate, but why is it lower on the manual MPI?
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Old 03-08-2004, 23:39   #4 (permalink)
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Re: EA diff?

because the manuals have a shorter first gear than the auto's
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Old 03-08-2004, 23:39   #5 (permalink)
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Re: EA diff?

In practice they seem to vary wildly. 3.23 is rare, most of the serII mpfi manuals I see have 3.08 or 2.92.
I've seen cfi manuals with 2.77, 2.92. and 3.08.
Our serI auto CFI got a 3.08 diff.


I think it was all optioning really, most of these cars they never changed the oil let alone the diff You will have to crawl under it and look.

Alex
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Old 03-08-2004, 23:44   #6 (permalink)
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Re: EA diff?

this is for series II EA's

5 speed manual gear ratios
1st 3.50
2nd 2.14
3rd 1.39
4th 1.00
5th 0.78
Reverse 3.39

4 speed Auto gear ratios
1st 2.39
2nd 1.45
3rd 1.00
4th 0.69
Reverse 2.09
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Old 03-08-2004, 23:52   #7 (permalink)
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Re: EA diff?

Quote:
Originally Posted by mongrelEB
In practice they seem to vary wildly. 3.23 is rare, most of the serII mpfi manuals I see have 3.08 or 2.92.
I've seen cfi manuals with 2.77, 2.92. and 3.08.
Our serI auto CFI got a 3.08 diff.


I think it was all optioning really, most of these cars they never changed the oil let alone the diff You will have to crawl under it and look.

Alex
i was just going by the ford brocshure and spec sheets for the EA

ive seen a fair few 3.23 diffs in wreckers but mostly under Ghias have also seen EB Fairmonts with 3.08 but never seen a series 1 EA with anything but a 2.77 or 2.92.
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Old 03-08-2004, 23:58   #8 (permalink)
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Re: EA diff?

My manual EA S had a 2.92
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Old 03-09-2004, 00:48   #9 (permalink)
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Re: EA diff?

The manual 3.2 EAs had 3.23 diffs.
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Old 03-09-2004, 00:53   #10 (permalink)
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Re: EA diff?

Quote:
Originally Posted by large_trout
The manual 3.2 EAs had 3.23 diffs.
now thats something i didnt know. a guy at work has a manual 3.2 EA ill' ask him to check his one.
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