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<p>The original final drive ratio for the BN1 was 4.125:1. This was using the spiral bevel rear end. BN2 through BJ8 used the hypoid rear axle and the standard final drive ratio through the BJ7 was 4.11:1. </p>
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<p>There were several different ratios available for the spiral bevel set, but I'm not sure what they were. The hypoid set was available in 3.909:1 for early non-overdrive and late (BJ8) overdrive cars and in 3.54:1 for late non-overdrive cars. </p>
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<p>The 2660 has plenty of power to pull a higher ratio on the highway and since I am using a hypoid final drive in my car I have opted for the 3.54:1 ratio as supplied by Mike Lempert. It is very pleasant in town or on the road.</p>
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<p>Bill Lawrence</p>
<p>BN1 #554</p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Healeys <healeys-bounces@autox.team.net> on behalf of Chris Scholz <drscholz@visioncenterpc.com><br>
<b>Sent:</b> Monday, February 20, 2017 3:18:16 PM<br>
<b>To:</b> Jonathan Einhorn<br>
<b>Cc:</b> healey list<br>
<b>Subject:</b> Re: [Healeys] Rear axle ratios</font>
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<div>I switched my 4.11 to 3.54 and was very pleased. <br>
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Sent from my iPhone
<div>Chris Scholz OD</div>
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On Feb 20, 2017, at 8:36 AM, Jonathan Einhorn <<a href="mailto:einhornlawoffice@gmail.com">einhornlawoffice@gmail.com</a>> wrote:<br>
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<div dir="ltr">I'm restoring a 100-4 and have several rear axle ratios: what is the best one for street driving? What was standard? Yes, it's got OD.
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<div>thanks</div>
<div>jon<br clear="all">
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-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">Jonathan J. Einhorn, Esq.<br>
Attorney & Counselor at Law<br>
129 Whitney Avenue<br>
New Haven, CT. 06510<br>
tel: 203-777-3777<br>
<a href="mailto:einhornlawoffice@gmail.com" target="_blank">einhornlawoffice@gmail.com</a><br>
fax: 203-782-1721<br>
cell: 203-623-7373</div>
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