F-150 14J differential
#1
F-150 14J differential
I am curious why Ford used a 14J 3.00 Gear ratio on a 150 with a factory 460.
It seems to be a bit noisy and I was wondering if I should go with a 3.55 or something.fuel mileage is decent for a 460 but is long legged, yet kick down on passing tends to wind the engine pretty good. Any thoughts?
It seems to be a bit noisy and I was wondering if I should go with a 3.55 or something.fuel mileage is decent for a 460 but is long legged, yet kick down on passing tends to wind the engine pretty good. Any thoughts?
#2
I am curious why Ford used a 14J 3.00 Gear ratio on a 150 with a factory 460.
It seems to be a bit noisy and I was wondering if I should go with a 3.55 or something. Fuel mileage is decent for a 460 but is long legged, yet kick down on passing tends to wind the engine pretty good. Any thoughts?
It seems to be a bit noisy and I was wondering if I should go with a 3.55 or something. Fuel mileage is decent for a 460 but is long legged, yet kick down on passing tends to wind the engine pretty good. Any thoughts?
14J: 14 = Ford 9" Rear Axle / 3.00-1 / 3,600 lbs. Rear Axle Capacity // J = Power Steering.
#3
#4
Ok thanks, good to know... and I will probably just stick to the 3.00 ratio for better fuel economy.
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Usually 60-65 MPH on mostly 2 lane state highways,it could use a little better take off in heavier traffic when pulling onto the highway from country roads.
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#8
If your looking for more torque down low and you don't have one already a towing cam may be a good idea, you'll get more push where you need it without ruining your fuel economy. Before the cam you'll want a free flowing exhaust so you can take advantage of the power
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An E4OD automatic 4-spd overdrive transmission, a stand-alone transmission shift controller and a set of either 3.50 or 3.70:1 rear end gears would give to you the best of both worlds.
Lower gearing for better in town acceleration or pulling a heavy load or, an overdrive gear for cruising the highway to keep the engine RPMs in check.
Final drive equivalent, in overdrive with a 3.50:1 rear end ratio, would equate to having a 2.49:1 ratio ring and pinion in the rear end.
With 3.70 rear end gears and in overdrive, the final drive equivalent would be 2.63:1. --both of which are even higher ratios than what you currently have with the 3.00:1 ratio.
(final drive equivalent is figured by multiplying the high gear/overdrive ratio by the rear end ratio). The E4OD overdrive ratio is .71:1.
E40D Transmission Swap - Custom Classic Trucks Magazine
Lower gearing for better in town acceleration or pulling a heavy load or, an overdrive gear for cruising the highway to keep the engine RPMs in check.
Final drive equivalent, in overdrive with a 3.50:1 rear end ratio, would equate to having a 2.49:1 ratio ring and pinion in the rear end.
With 3.70 rear end gears and in overdrive, the final drive equivalent would be 2.63:1. --both of which are even higher ratios than what you currently have with the 3.00:1 ratio.
(final drive equivalent is figured by multiplying the high gear/overdrive ratio by the rear end ratio). The E4OD overdrive ratio is .71:1.
E40D Transmission Swap - Custom Classic Trucks Magazine
#12
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