gear ratio.
hey all, I'm looking at purchasing a new tow vechicle. I believe I'm going diesel, but wondering what people think a good gear ratio would be for towing 9,000lbs. I see most 3/4 ford have 3:55. I was ...
Forum Discussion
You don't have much choice with Ford and no choice with GM diesels. So with Ford if you are wanting to size your truck for a large, over 16000 lb, rv get an F350 dually and it will have 3.73 gears. All Duramax pickups have 3.73 gears. If you want a Ford SRW your choice is 3.31 or 3.55. Often the 3.55 equipped truck will have the 20" tires which are not available on the 3.31 equipped trucks. With the larger tires and lower speed ratio the end result is that your engine rpm is fairly close one to other anyway. Even so the 3.31 gears on the Ford provide a little better mpg than what you will get with 3.55 gears. Not pertaining specifically to your question but if you are buying a Ford srw diesel to tow a fiver avoid the f250, it has very little payload.
