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<div dir="ltr" data-setdir="false">Dave,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Stock Tigers came with a Salisbury rearend. Salisbury is the British subsidiary of Dana/Spicer Corp. These British units came in Sunbeam Tigers, Jag XKEs, AC Cobras and TVR Griffiths, and used 7/16" ring gear bolts and a 10 spline (coarse) pinion gear. The factory offered other LAT ratios of 3.07, 3.31, 3.54 and 3.73 for those units.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">The American version of the Dana 44 rearend uses 3/8" ring gear bolts and a 26 spline (fine) pinion gear. Most Tiger owners in the USA, who have upgrade to a positraction unit (limited-slip) and changed their rearend ratio to something other than the factory 2.88, have installed the American version with the 3/8" ring gear bolts and switch over to the fine spline input flange.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">If<i> y</i>ou changed back to 2.88s, you would have to find an original Salisbury posi unit (rare) or drill out an American unit for the 7/16" ting gear bolts and get a 10 spline input flange.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">In the 1980s Dana made Dane 44 2.72 rearend gears for Jeep Wagoneers, Cherokees, Grand Cherokees and C3 Corvettes. The 2.72 gears have 3/6" ring gear bolts and a fine spline pinion, and will bolt into any Tiger rearend that has the American differential.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Since I sold you the posi unit in your car (2009), this is what I recommend. <span><span style="color: rgb(0, 0, 0); font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 16px;">The 2.72 gears will bolt right up to your posi unit and you can use your existing fine spline pinion gear flange. </span></span>Changing from 3.07s to 2.72s will give you a ~14% drop in rpms in 4th gear, ~300 rpms. However, your 1st gear will be taller, too, so do NOT run 2.72 gears with a close ratio transmission or you'll burn up your clutch in no time. 2.88 gears are bad enough with a close ratio in 1st gear, so 2.72s will be worse.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">My other recommendation is to<span><span style="color: rgb(0, 0, 0); font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 16px;"> convert to a wide ratio transmission and </span></span>install a 2.90 1st gear (from Dan William's Toploaders). This gives you a fabulous hole shot, while not impacting your 4th gear highway cruising. I have helped a bunch of Tiger owners convert to this setup and they all love it. It is the best of both worlds, short of a 5 speed, but at a fraction of the cost.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Gary</div><div><br></div>
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On Sunday, November 17, 2019, 06:37:42 AM MST, Dave Munroe via Tigers <tigers@autox.team.net> wrote:
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<div><div id="ydpe274bfd2yiv4118088068"><div><div id="ydpe274bfd2yiv4118088068response_container_BBPPID" style="outline:none;"> <div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;"> So Clyde;</div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;"><br clear="none"></div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;">Are you saying my stock rear end ( '65 Mark 1A - B382000450) which came to me with a 3:07 set of gears could be easily changed back to a set of stock 2:88 gears ( or even lower!) ?</div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;"><br clear="none"></div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;">Do you know what the lowest possible gear set might be?</div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;"><br clear="none"></div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;">Love to drop my cruising speed rpm to something more comfortable.</div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;"><br clear="none"></div><div id="ydpe274bfd2yiv4118088068BB10_response_div_BBPPID" style="width:100%;">Dave</div> <div id="ydpe274bfd2yiv4118088068response_div_spacer_BBPPID" style="width:100%;"> <br clear="none" style="display:initial;"></div> <div id="ydpe274bfd2yiv4118088068blackberry_signature_BBPPID"> <div id="ydpe274bfd2yiv4118088068_signaturePlaceholder_BBPPID">Sent from my BlackBerry — the most secure mobile device — via the Bell Network</div> </div></div><div class="ydpe274bfd2yiv4118088068yqt5342999702" id="ydpe274bfd2yiv4118088068yqt89490"><div id="ydpe274bfd2yiv4118088068_original_msg_header_BBPPID"> <table width="100%" style="background-color: white; display: table; outline: none;"><tbody><tr><td colspan="2" rowspan="1" style="background-color:rgb(255, 255, 255);"> <div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(181, 196, 223);padding:3pt 0in 0in;font-family:Tahoma,;"> <div id="ydpe274bfd2yiv4118088068from"><b>From:</b> tigers@autox.team.net</div><div id="ydpe274bfd2yiv4118088068sent"><b>Sent:</b> November 17, 2019 9:25 AM</div><div id="ydpe274bfd2yiv4118088068to"><b>To:</b> tigers@autox.team.net</div><div id="ydpe274bfd2yiv4118088068reply_to"><b>Reply to:</b> clydemclaughlin@verizon.net</div><div id="ydpe274bfd2yiv4118088068subject"><b>Subject:</b> [Tigers] axle spline</div></div></td></tr></tbody></table> <br clear="none"> </div><div style="outline:none;">
<div style="color: black; font-style: normal; font-weight: normal; font-stretch: normal; font-size: 10pt; line-height: normal; font-family: arial;">You don't need to worry about spline count on axle unless you rpl the tiger axles with something else, I changed to Ford axles. Thats another story..The other spline to note is the pinion if you change the ring and pinion. The early Dana 44 pinions have a course spline, all new replacement gears have a finer spline, more surface area and are stronger, it will require a companion flange to connect the drive shaft. These are readily available</div>
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