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Gearbox & rear diff
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<blockquote data-quote="fabianyee" data-source="post: 334922" data-attributes="member: 6"><p>E30 320i is using the manual Getrag 240 gearbox while the 325i uses the Getrag 260. In terms of gearing, there's only slight difference for 3rd gear. </p><p></p><p>As for rear diff, 3.73 would be the optimal ratio for balance of pick-up and cruising speed. I've used the 3.73 on my M42 before, cruising speed at 3000rpm is about 120kph on the speedometer.</p></blockquote><p></p>
[QUOTE="fabianyee, post: 334922, member: 6"] E30 320i is using the manual Getrag 240 gearbox while the 325i uses the Getrag 260. In terms of gearing, there's only slight difference for 3rd gear. As for rear diff, 3.73 would be the optimal ratio for balance of pick-up and cruising speed. I've used the 3.73 on my M42 before, cruising speed at 3000rpm is about 120kph on the speedometer. [/QUOTE]
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