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post #1 of 8 (permalink) Old 06-16-02, 06:14 PM Thread Starter
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Diff Ratio's Yet again!!

I want to change the ratio from 2.77 to 3.45 in my XF. Is it as simple as replacing the ratio's or do i need a whole diff.

I remeber hearing from somewhere that you can't change the 2.77 but you can change the 2.92. Is this accurate?

And how much would it cost for the 3.45 gears?

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Matt


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post #2 of 8 (permalink) Old 06-16-02, 06:57 PM
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From the discusison I had with a Diff guy last year, the whole housing will need to change. A 3.45 gear set has a different diameter to the 2.77 set so you cant just bolt the gears on. Thats what they told me anyway...

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post #3 of 8 (permalink) Old 06-16-02, 08:18 PM
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Is 3.45 critical? You can buy a 3.23 staight out of a XE and bolt it straight in.
That's what I did.

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post #4 of 8 (permalink) Old 06-16-02, 08:25 PM
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Heaps of 2nd hand diffs in the Quokka. You can pick them up pretty cheap from there. Got a 2.92 lsd out of an EA, complete with disks, calipers for $100 AU.
Some time ago saw a 3.45 out of an XR6 for $300 AU. Didn't have the money, else it would be under the XF now. Maybe next time. Just got to keep looking when i get some spare $$$$$$.
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post #5 of 8 (permalink) Old 06-16-02, 10:51 PM Thread Starter
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LTDHO : no the 3.45 was just an idea of what to get. How hard would it be to get an XE 3.23 diff with a disc setup and coil springs? Or could i get the gear set and chuck it in mine?

My diff is fairly worn, and i have a feeling it wont see the next couple of months so i'm just weighing up options at the moment.

Did the 3.23 have a good improvement in your car?

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post #6 of 8 (permalink) Old 06-16-02, 11:43 PM
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I believe the 3.23 lsd came out in the GHIA XE. Go wreckers.

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post #7 of 8 (permalink) Old 06-17-02, 12:15 AM
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I thought Ghias has 2.77's??/

You will find 3.23 under 3 speel manual ute and panelvans. I noticed alot from going to a 3.23. Good value.
A 3.45 out of a XR6 or XR8 will fit. you have to use the XF gear cover though. 3.23 will bolt straight up, no probs.
I cleaned mine, painted it gloss black and replaced the oil. Not 'cause I had to but I wanted too.

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post #8 of 8 (permalink) Old 06-17-02, 08:15 AM Thread Starter
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If i was to get a 3.23 out of an XE ute/panelvan, my only concern would be that its a) not disc setup and b) its leaf spring.

Would it be easy to convert it?

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