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  1. S

    ratio swap ? on a I/O

    I have a 79 vip 17 ft with a 4 cyl 2.5 iron duke<br />I believe the ratio on the outdrive is 1.55.<br />My ? is the outdrive is toast I found a donor boat it is a 81 with the larger 4 cyl 470 series <br />170 horse vs. mine @ 140 it has a 1.85 with a 21 p<br />prop CAN I USE THIS ?
  2. S

    Ratio swap on OUTDRIVE ?

    I have a 79 vip 17 ft with a 4 cyl 2.5 iron duke<br />I believe the ratio on the outdrive is 1.55.<br />My ? is the outdrive is toast I found a donor boat it is a 81 with the larger 4 cyl 470 series <br />170 horse vs. mine @ 140 it has a 1.85 with a 21 p<br />prop CAN I USE THIS ?
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