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I tried a bunch of arrangements when I raced my TR3. I agree that
you want something close to a standard 3.7 final drive. My favorite
setup was close ratio 4 speed, A-type overdrive and 4.55 rear. The
0.82 overdrive gives 3.73 in 4th overdrive. Your overdrive ratio is
similar. - Larry Young<br>
<br>
<div class="moz-cite-prefix">On 3/24/2025 10:49 PM, Dave Riddle via
Fot wrote:<br>
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<p class="MsoNormal"><span style="font-size:11.0pt">While we
will be running the Toyota 5 speed in the TR4 at Lime Rock
that gear box and engine are slated to go back in the
BajaTR3 afterwards. The motor that is being built for the
TR4 is being mated to a 4-speed TR4 box that has been
order. Trying to determine what gear ratios to run in it.
Will have both a 3.71 and 4.11 final drive and the motor
turning over at 6k with about 175 hp at the rear wheels.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Currently
the Toyota boxes we have are running…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">1<sup>st</sup>
3.950 3.830<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">2<sup>nd</sup>
2.140 2.060<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">3<sup>rd</sup>
1.38 1.430<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">4<sup>th</sup>
1.00 1.00<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">5<sup>th</sup>
0.810 0.840<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Anyone care
to share the hot setup for a 4-speed TR4 box?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="http://www.microworks.net/"
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<p class="MsoNormal"><b>Dave Riddle<o:p></o:p></b></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Business IT
Consulting<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Office:
480.610.8234<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Cell:
602.692.5276<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">eMail: <a
href="mailto:dave@microworks.net" moz-do-not-send="true">
<span style="color:blue">dave@microworks.net</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Website: <a
href="http://www.microworks.net/" moz-do-not-send="true">
<span style="color:blue">http://www.microworks.net</span></a><o:p></o:p></span></p>
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