SileNceR

Ok, so I managed to break the differential in my EA-II Fairmont; rather expectedly considering I dumped it from neutral to drive at 4500rpm....

Good news is tho, plenty of mates that are mechanics, getting a new (single spinner) diff built to 3.45 ratio (I think the one in there was 3.08, may have been 2.77 tho) at cost of about $150, plus around $50-100 for labour... and maybe a slab or two cos i'm a nice guy and all (besides the fact i'm saving a fortune over if I had it done at a workshop)

Old diff is out and apparrantly spider gears or something r borked... but anyway... what i'm writing to ask is, what speedo gear should I be purchasing; I assume the EA uses a speedo gear since although I figured the speedo would be read from the front wheels (would make sense, these can't lose traction), it reads high during virtual non-moving wheelspin...

uses 215/65r14 tyres, I think 205/65/r14 are stock... i think i'm looking for black speedo gear but i'm not sure...

some verification if possible... thanks in advance,
Clinton

NZ

Your diff would have been 3.08 or 3.23 depending on engine type.

3.23 if its MPI
3.08 if its CFI

A 3.45 will be a good boost over what ever you have anyway. Will it still be single spinner?

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SileNceR

CFI so 3.08..

yeah will still be a single spinner I think..

depends what the guy who's doing it can get for it

SileNceR

he was going to do 3.77 but we figured 100km/h cruising might be a little too un-economical for that :)

Rollin

i think the speedo gear for the 3.45 is grey but im not sure.

go to a ford spare parts place, they can help you, its only a couple of bucks for the gear IIRC.

speedo reads from the tailshaft speed, it is in the gearbox on the drivers side.

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qwikcorty

yeah 3.45 gear is grey

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SileNceR

with 215's?