The 3.7 pig will go into your Bugeye as long as it has an Austin/MG rear axle. I
don't know about the crown and pinion as I am not familiar with the 1500 Midget.
Some other person from the list will help.
Roger Cotting
60 Bugeyes 2
73 Midget
80TR95 Mitsu 3000Gt
JARplanner@aol.com wrote:
> Techie Question -
>
> I would like to swap my standard 4.22 differential for something with a
> higher gearing. I know the later 3.9 is the most common swap but I am
> interested if the 3.73 differential from the 1500 Midget will go into a rear
> housing from a Sprite MkII. Would the crown & pinion fit directly into the
> older rear housing? Is some machining necessary? Or would it be necessary
> swap the entire rearend and axles?
>
> This rearend will be going into my Bugeye, which will be a daily driver when
> finished. I do a lot of freeway driving (at the legal speed limit of course)
> so I am looking to keep the rpms down as low as possible. The car will have a
> fast road 1380 (110hp & 105 ft/lb torque) so the higher geared rearend should
> not hurt low-end performance too badly. I know some of you will say go to a
> 5-speed to keep the rpms down - that will be a future project, but too
> expensive right now.
>
> So is this a easy or hard swap? Help me out you Techies!
>
> Jim Rogers
> San Juan Capistrano CA
> 59 Bugeye
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