1988dolphin Posted July 22, 2017 Share Posted July 22, 2017 Morning All I am in the process of making the decision to drop gearing from the stock 4.10 to 4.88. I love my RV but my biggest fear when I drive my 1988 21 foot Dolphin / 22RE / automatic is to stall out on a steep hill. It has happened to me once and I needed a tow truck to get to the top. Truth be told I should not have attempted that hill that night. I should have just pulled over. Yet I did not and a lesson well learned. Since then I have greater respect and understanding of the limitations of the vehicle and have adjusted my driving style accordingly. I added a tachometer and ATF temperature gauge and drive with OD locked out. I am completely happy driving 55 MPH on the flats. I just want to be able to drive with a bit less concern about what may lie around the next corner on the road. Since that time I have made the climb up to Crater Lake, (top of the torque curve in first gear), and countless other 5000 and 6000 foot climbs with 4.10 gears. How much of a difference in real life driving does 4.88 gears make? I have spent hours on line using gear ratios calculators so I think I understand the numbers. What I really need is to hear from folks who have actually made the gearing change to 4.88. Were you happy with the change? Was it worth the effort? Where there unforeseen effects of the gearing change? If you were to do it all over again would you do it again? I welcome your feedback. Quote Link to comment Share on other sites More sharing options...
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