Hi Ed,
most LRX cars series 4 and 5 seem to have the 4.22 ratio. I guess it was
for stop light racing !!
The over drive standard set up is with a 4.22 and you will notice the
big difference in engine revs when you engage OD.
You can also fit the 3.89 to an OD car which reduces revs still further.
(around 8%)
Have fun with the OD
Jeff
In message <000701c0fc80$d537ef00$f5c32fd8@oemcomputer>, Ed Esslinger
<edstiger@snowhill.com> writes
> I'm Confused -- My work shop manual (WSM-145 page 23) indicates that the
>standard 1725 Alpine has a 3.89 rear end, with overdrive it's 4.22.
> On page 15 Road speed /Engine speed there is an indication that all
>North American cars had 4.22 rear ends, when you compare the overdrive
>speeds to standard. I hope this is true as I have installed an overdrive. Is
>there any way to tell by serial numbers?-- Ed
>
>Cool Cat Eddie ,1 S3 GT,3 S4's, 2 S5's, 2 MK1 Tigers
>Deep South Rep TE/AE
--
Jeff Howarth
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