Hey! yourself, TuTone (not that I believe it's your real name).
Go to the following page on Gerard Chateauvieux's excellent website for
information on differentials and much more:
http://www.gerardsgarage.com/GarageContent/Tech/SpridgetSpecs.htm
Assuming it is as original, you diff will be a 4.22 ratio. In December 1968,
Sprites and Midgets were fitted with a 3.9 diff, and Midgets received a 3.7
in August 1977 (Sprite production having ended in July 1971).
Like you, I take long summer trips in my 58, which happily carries on with
its original 948 engine. I replaced the 4.22 diff with a 3.9 a couple of
years ago, and the only downside was a lessened ability to perform
California stops. So, I actually stop and use first gear more often now. You
wouldn't be unhappy with a 3.9 in your car.
I'm in the middle of rebuilding my engine, and will see a significant power
gain, so I'm thinking of trying a 3.7 diff for even lower highway RPMs.
Doug Ingram
Victoria BC
1958 Sprite (AN5L/636)
1963 Sprite Mk II project (HAN7L/30003)
----- Original Message -----
From <tmheffron at aol.com>
To: <team-thicko@autox.team.net>; <spridgets@autox.team.net>
Sent: Saturday, March 09, 2002 10:18 PM
Subject: Sprite differential possibilities
> Hey!!!!:
>
> OK, who can list all of the source cars for all the differentials that'll
> bolt into a squarebody Sprite rear housing? I drive the '66 on a 1000+/-
> trip each summer. The car's bone stock, and of course I need much taller
> gears...
>
> TuTone
>
> p.s. I'm betting Frank or Peter can recite this in their sleep (and they
> probably do each night!).
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