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take-off/launch question

Discussion in 'The Hokey Ass Message Board' started by nlualum82, Sep 22, 2013.

  1. nlualum82
    Joined: Dec 24, 2005
    Posts: 103

    nlualum82
    Member
    from Oregon

    I now have 2 T5's in my garage. Both are NWC.
    One is from a '91 S-10. It has a 3.76 first gear and was made for an electronic speedo.
    The other was behind a V8 in an '85 Camaro. First gear is 2.95. Speedo is mechanical.
    I am going to bolt one of them to a Mercruiser 120 and replace the 350/350 combo in my '36 Chevy pickup.
    I have the pieces to use the '91 behind the Merc (SBC identical) or I can use its tailhousing on the '85
    I am wondering if the first gear in the '85 would give me a reasonable takeoff from a dead stop.
    Currently the truck weighs around 2900 and the swap should take about 300 off of that.
    I have a 3.90 rear but also have a nice 3.73 I would consider swapping
    Current tires are 30". I could replace them with a smaller diameter if needed, but don't want to go so far as to defeat the purpose (lowering highway rpm's, currently 2900 at 65 mph).
    Can't imagine a formula for this, I hope I can get some experienced "seat of the pants" advice. I don't do burnouts or race, just want to make sure I could leave a red light without slipping the clutch ridiculously.

    On a side note, since the tailhousing will be from the '91 either way, I wonder about adapting to a mech. speedo. All the advice I see is about using a WC tranny in this swap. Are the shafts and alignment holes the same?
     
  2. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,915

    gimpyshotrods
    ALLIANCE MEMBER

    You are going to want the S10 transmission, with either a small spacer, or a trimmed input shaft.
     
  3. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,915

    gimpyshotrods
    ALLIANCE MEMBER

    <table frame="VOID" cols="11" rules="NONE" border="0" cellspacing="0"><colgroup><col width="120"><col width="86"><col width="119"><col width="119"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"></colgroup><tbody><tr><td align="LEFT" width="120" height="17">
    </td><td align="LEFT" width="86">RPM</td><td align="RIGHT" width="119">1000.00</td><td align="RIGHT" width="119">1500.00</td><td align="RIGHT" width="86">2000.00</td><td align="RIGHT" width="86">2500.00</td><td align="RIGHT" width="86">3000.00</td><td align="RIGHT" width="86">3500.00</td><td align="RIGHT" width="86">4000.00</td><td align="RIGHT" width="86">4500.00</td><td align="RIGHT" width="86">5000.00</td></tr><tr><td align="LEFT" height="17">Late S10 T5</td><td align="RIGHT">3.76</td><td align="RIGHT">6.09</td><td align="RIGHT">9.13</td><td align="RIGHT">12.17</td><td align="RIGHT">15.22</td><td align="RIGHT">18.26</td><td align="RIGHT">21.30</td><td align="RIGHT">24.35</td><td align="RIGHT">27.39</td><td align="RIGHT">30.43</td></tr><tr><td align="LEFT" height="17">3.90 Rear Gear</td><td align="RIGHT">2.18</td><td align="RIGHT">10.50</td><td align="RIGHT">15.75</td><td align="RIGHT">21.00</td><td align="RIGHT">26.24</td><td align="RIGHT">31.49</td><td align="RIGHT">36.74</td><td align="RIGHT">41.99</td><td align="RIGHT">47.24</td><td align="RIGHT">52.49</td></tr><tr><td align="LEFT" height="17">30.00” tire</td><td align="RIGHT">1.41</td><td align="RIGHT">16.23</td><td align="RIGHT">24.35</td><td align="RIGHT">32.46</td><td align="RIGHT">40.58</td><td align="RIGHT">48.69</td><td align="RIGHT">56.81</td><td align="RIGHT">64.92</td><td align="RIGHT">73.04</td><td align="RIGHT">81.15</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">1.00</td><td align="RIGHT">22.88</td><td align="RIGHT">34.33</td><td align="RIGHT">45.77</td><td align="RIGHT">57.21</td><td align="RIGHT">68.65</td><td align="RIGHT">80.10</td><td align="RIGHT">91.54</td><td align="RIGHT">102.98</td><td align="RIGHT">114.42</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">0.72</td><td align="RIGHT">31.78</td><td align="RIGHT">47.68</td><td align="RIGHT">63.57</td><td align="RIGHT">79.46</td><td align="RIGHT">95.35</td><td align="RIGHT">111.24</td><td align="RIGHT">127.14</td><td align="RIGHT">143.03</td><td align="RIGHT">158.92</td></tr></tbody> </table> <table frame="VOID" cols="11" rules="NONE" border="0" cellspacing="0"><colgroup><col width="120"><col width="86"><col width="119"><col width="119"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"></colgroup><tbody><tr><td align="LEFT" width="120" height="17">
    </td><td align="LEFT" width="86">RPM</td><td align="RIGHT" width="119">1000.00</td><td align="RIGHT" width="119">1500.00</td><td align="RIGHT" width="86">2000.00</td><td align="RIGHT" width="86">2500.00</td><td align="RIGHT" width="86">3000.00</td><td align="RIGHT" width="86">3500.00</td><td align="RIGHT" width="86">4000.00</td><td align="RIGHT" width="86">4500.00</td><td align="RIGHT" width="86">5000.00</td></tr><tr><td align="LEFT" height="17">Late S10 T5</td><td align="RIGHT">3.76</td><td align="RIGHT">6.36</td><td align="RIGHT">9.55</td><td align="RIGHT">12.73</td><td align="RIGHT">15.91</td><td align="RIGHT">19.09</td><td align="RIGHT">22.27</td><td align="RIGHT">25.45</td><td align="RIGHT">28.64</td><td align="RIGHT">31.82</td></tr><tr><td align="LEFT" height="17">3.73 Rear Gear</td><td align="RIGHT">2.18</td><td align="RIGHT">10.98</td><td align="RIGHT">16.46</td><td align="RIGHT">21.95</td><td align="RIGHT">27.44</td><td align="RIGHT">32.93</td><td align="RIGHT">38.42</td><td align="RIGHT">43.90</td><td align="RIGHT">49.39</td><td align="RIGHT">54.88</td></tr><tr><td align="LEFT" height="17">30.00” tire</td><td align="RIGHT">1.41</td><td align="RIGHT">16.97</td><td align="RIGHT">25.45</td><td align="RIGHT">33.94</td><td align="RIGHT">42.42</td><td align="RIGHT">50.91</td><td align="RIGHT">59.39</td><td align="RIGHT">67.88</td><td align="RIGHT">76.36</td><td align="RIGHT">84.85</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">1.00</td><td align="RIGHT">23.93</td><td align="RIGHT">35.89</td><td align="RIGHT">47.86</td><td align="RIGHT">59.82</td><td align="RIGHT">71.78</td><td align="RIGHT">83.75</td><td align="RIGHT">95.71</td><td align="RIGHT">107.67</td><td align="RIGHT">119.64</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">0.72</td><td align="RIGHT">33.23</td><td align="RIGHT">49.85</td><td align="RIGHT">66.47</td><td align="RIGHT">83.08</td><td align="RIGHT">99.70</td><td align="RIGHT">116.31</td><td align="RIGHT">132.93</td><td align="RIGHT">149.55</td><td align="RIGHT">166.16</td></tr></tbody> </table> <table frame="VOID" cols="11" rules="NONE" border="0" cellspacing="0"><colgroup><col width="120"><col width="86"><col width="119"><col width="119"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"></colgroup><tbody><tr><td align="LEFT" width="120" height="17">
    </td><td align="LEFT" width="86">RPM</td><td align="RIGHT" width="119">1000.00</td><td align="RIGHT" width="119">1500.00</td><td align="RIGHT" width="86">2000.00</td><td align="RIGHT" width="86">2500.00</td><td align="RIGHT" width="86">3000.00</td><td align="RIGHT" width="86">3500.00</td><td align="RIGHT" width="86">4000.00</td><td align="RIGHT" width="86">4500.00</td><td align="RIGHT" width="86">5000.00</td></tr><tr><td align="LEFT" height="17">Camaro T5 2.95</td><td align="RIGHT">2.95</td><td align="RIGHT">7.76</td><td align="RIGHT">11.64</td><td align="RIGHT">15.51</td><td align="RIGHT">19.39</td><td align="RIGHT">23.27</td><td align="RIGHT">27.15</td><td align="RIGHT">31.03</td><td align="RIGHT">34.91</td><td align="RIGHT">38.79</td></tr><tr><td align="LEFT" height="17">3.90 Rear Gear</td><td align="RIGHT">1.94</td><td align="RIGHT">11.80</td><td align="RIGHT">17.69</td><td align="RIGHT">23.59</td><td align="RIGHT">29.49</td><td align="RIGHT">35.39</td><td align="RIGHT">41.29</td><td align="RIGHT">47.18</td><td align="RIGHT">53.08</td><td align="RIGHT">58.98</td></tr><tr><td align="LEFT" height="17">30.00” tire</td><td align="RIGHT">1.34</td><td align="RIGHT">17.08</td><td align="RIGHT">25.62</td><td align="RIGHT">34.16</td><td align="RIGHT">42.70</td><td align="RIGHT">51.23</td><td align="RIGHT">59.77</td><td align="RIGHT">68.31</td><td align="RIGHT">76.85</td><td align="RIGHT">85.39</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">1.00</td><td align="RIGHT">22.88</td><td align="RIGHT">34.33</td><td align="RIGHT">45.77</td><td align="RIGHT">57.21</td><td align="RIGHT">68.65</td><td align="RIGHT">80.10</td><td align="RIGHT">91.54</td><td align="RIGHT">102.98</td><td align="RIGHT">114.42</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">0.73</td><td align="RIGHT">31.35</td><td align="RIGHT">47.02</td><td align="RIGHT">62.70</td><td align="RIGHT">78.37</td><td align="RIGHT">94.05</td><td align="RIGHT">109.72</td><td align="RIGHT">125.40</td><td align="RIGHT">141.07</td><td align="RIGHT">156.74</td></tr></tbody> </table>
    <table frame="VOID" cols="11" rules="NONE" border="0" cellspacing="0"><colgroup><col width="120"><col width="86"><col width="119"><col width="119"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"><col width="86"></colgroup><tbody><tr><td align="LEFT" width="120" height="17">
    </td><td align="LEFT" width="86">RPM</td><td align="RIGHT" width="119">1000.00</td><td align="RIGHT" width="119">1500.00</td><td align="RIGHT" width="86">2000.00</td><td align="RIGHT" width="86">2500.00</td><td align="RIGHT" width="86">3000.00</td><td align="RIGHT" width="86">3500.00</td><td align="RIGHT" width="86">4000.00</td><td align="RIGHT" width="86">4500.00</td><td align="RIGHT" width="86">5000.00</td></tr><tr><td align="LEFT" height="17">Camaro T5 2.95</td><td align="RIGHT">2.95</td><td align="RIGHT">8.11</td><td align="RIGHT">12.17</td><td align="RIGHT">16.22</td><td align="RIGHT">20.28</td><td align="RIGHT">24.33</td><td align="RIGHT">28.39</td><td align="RIGHT">32.44</td><td align="RIGHT">36.50</td><td align="RIGHT">40.56</td></tr><tr><td align="LEFT" height="17">3.73 Rear Gear</td><td align="RIGHT">1.94</td><td align="RIGHT">12.33</td><td align="RIGHT">18.50</td><td align="RIGHT">24.67</td><td align="RIGHT">30.83</td><td align="RIGHT">37.00</td><td align="RIGHT">43.17</td><td align="RIGHT">49.34</td><td align="RIGHT">55.50</td><td align="RIGHT">61.67</td></tr><tr><td align="LEFT" height="17">30.00” tire</td><td align="RIGHT">1.34</td><td align="RIGHT">17.86</td><td align="RIGHT">26.78</td><td align="RIGHT">35.71</td><td align="RIGHT">44.64</td><td align="RIGHT">53.57</td><td align="RIGHT">62.50</td><td align="RIGHT">71.43</td><td align="RIGHT">80.35</td><td align="RIGHT">89.28</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">1.00</td><td align="RIGHT">23.93</td><td align="RIGHT">35.89</td><td align="RIGHT">47.86</td><td align="RIGHT">59.82</td><td align="RIGHT">71.78</td><td align="RIGHT">83.75</td><td align="RIGHT">95.71</td><td align="RIGHT">107.67</td><td align="RIGHT">119.64</td></tr><tr><td align="LEFT" height="17">
    </td><td align="RIGHT">0.73</td><td align="RIGHT">32.78</td><td align="RIGHT">49.17</td><td align="RIGHT">65.56</td><td align="RIGHT">81.94</td><td align="RIGHT">98.33</td><td align="RIGHT">114.72</td><td align="RIGHT">131.11</td><td align="RIGHT">147.50</td><td align="RIGHT">163.89</td></tr></tbody> </table>
     
  4. nlualum82
    Joined: Dec 24, 2005
    Posts: 103

    nlualum82
    Member
    from Oregon

    Wow! Thanks Gimpy!
    That looks like a lot of work! Do you have a site online for calculating this?
    I already have the spacer for the S-10. Got it a couple months ago from a company I found online.
    Got a good deal on the other recently, came along with something else I bought.
    The S-10 goes on and I'll hang on to the other for insurance.
     

  5. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,915

    gimpyshotrods
    ALLIANCE MEMBER

    No site. Just cranked it out. Matching drivtrain components is what I do. Always happy to be of service!
     

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