Gearing help
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Laughing Gas
Joined: Aug 2005
Posts: 831
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From: Port Elgin, On
Gearing help
Hey guys my dad has a 1997 F350 drw, cc, lb 7.3 and the gearing in it is 4.11. He is not happy with the mileage that he is getting and was wondering if going to a higher gear ratio would help any with fuel consuption and be cost effective. Thanks for any input.
James
James
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Joined: May 2009
Posts: 5,470
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From: Pea Ridge, AR
2WD or 4? Just because double the cost. Gears can be had pretty cheap, but figure around $1k if you are having it done per axle.
To be cost effective you would have to make up the difference in MPG's to justify. Obviously if you aren't concerned about anything except mileage you could go extremely high gearing but couldn't pull much and maybe not ever get anywhere lol.
To be cost effective you would have to make up the difference in MPG's to justify. Obviously if you aren't concerned about anything except mileage you could go extremely high gearing but couldn't pull much and maybe not ever get anywhere lol.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
My stock 4X4 gearing of 3.73 gets me as low as 16 city in the winter and as high as 20 on the open road with summer fuel if I keep the RPMs below 2000. The CC DRW is heavier than mine with more road friction, so the mileage would be a bit lower - but keeping those revs below 2000 on the highway make a big difference. There are attachments available for the output of the transmission to alter the gearing ratio as well, but they are expensive. This attachment also changes the steps on the gearing to keep the shifts closer and leave the RPMs in the torque band. This would help with economy while towing.
I'm sorry, I had a link to these long ago, but I'd have to start over with a whole new search.
I'm sorry, I had a link to these long ago, but I'd have to start over with a whole new search.
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