i love the 4.3 v-6 but i didnt think they had this much torque and power
Those numbers are reffering to the gear ratio of the rear axle. 3.73 turns of the driveshaft for 1 rotation of the rear axle. The higher the number the tourqier the truck would be. When you make your tires larger, you want to have a higher gear ratio to keep the truck shifting at the same speeds it did before. Imagine bicycle chains front sprocket - the small one has maybe 20 teeth, and the large one has 40, so the smaller sprocket would give you more torque for climbing hills, and the larger gear would give you a higher top speed. Nomasayin;?
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Joined: Nov 2012
Posts: 836
From: under Los Angeles
Those numbers are reffering to the gear ratio of the rear axle. 3.73 turns of the driveshaft for 1 rotation of the rear axle. The higher the number the tourqier the truck would be. When you make your tires larger, you want to have a higher gear ratio to keep the truck shifting at the same speeds it did before. Imagine bicycle chains front sprocket - the small one has maybe 20 teeth, and the large one has 40, so the smaller sprocket would give you more torque for climbing hills, and the larger gear would give you a higher top speed. Nomasayin;?
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Joined: Apr 2012
Posts: 1,279
From: Port huron,Mi
While gear ratio number maybe higher it actualy lowers the gear ratio.The lower the gear ratio the more revolutions of the axel to the driveshaft.
273 gears would be a high gear ratio or in my case 3.08.4.11`s or 456`s would be and extremely low gear ratio.Vehicle using these gear ratios would take off extremely fast but would run out of topend speed rather quick.A truck with a 3.42 or 373 gears would be ideal.Better take off,pulling power less work and strain on the engine and trans better fuel economy.
273 gears would be a high gear ratio or in my case 3.08.4.11`s or 456`s would be and extremely low gear ratio.Vehicle using these gear ratios would take off extremely fast but would run out of topend speed rather quick.A truck with a 3.42 or 373 gears would be ideal.Better take off,pulling power less work and strain on the engine and trans better fuel economy.
Last edited by 1sttimejimmyowner; Mar 6, 2013 at 10:10 AM.
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Joined: Nov 2012
Posts: 836
From: under Los Angeles
I would say NO. In that no engine works at peak efficiency (or any near close) at all speeds. With a 3:08 one could have his foot deeper to pull the load at the speed desired thus using more litres per mile and thus more fuel. A 3:43 would turn more times but with less volumn per rev. The next poster with an opinion will have earned an A in thermo physics and calculus.