Differential gear ratio 294 427. The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires.
Rearend Gear Ratio Delima Ford F150 Forum Community Of Ford Truck Fans
1963-1967 Ford Econoline 6250 WMS to WMS 1967-1968 Ford Ranchero 6125 WMS to WMS Ford 750-Inch Rear Axle Ford 75-Inch Rear Axle Specifications.
. 2000 RPM 65693811 3041. Axle Ratio RPM X Tire Size Speed MPH X 336 Example 488. FIGURING REAREND GEAR RATIO Ring Pinion FORMULA.
Much has changed over the past 5 years or so with axle ratios. The gear ratio most interesting to 4x4 truck owners is the ratio between the driveshaft and axles - the differential gear ratio or axle gear ratio. In this video I discuss some of the reasons to change your axle gears as well as a formula to calculate the best gear ratio based on your tire size.
Applications running gears with ratios lower than 51 is nothing outlandish for these types of F-250s. Especially with the 10 speed trans. First locate your current gear ratio and tire diameter and then find your approximate RPM at 65 MPH then reference your new tire diameter with your desired RPM to find the new gear ratio needed.
T C FORD TOP LOADER 4 SPEED WIDE RATIO 2ND GEAR 31 TOOTH showing. My guess is the truck likely has a 3251 rear gear ratio. A ratio of 456 means that as the axle turns one whole circle the driveshaft turns 456 circles.
This means that for every 41 turns of the driveshaft the rear axle will be turned one time and you will have a torque advantage of 41x. The plate layouts vary depending on the. For example if your Ford car or truck has a ring gear with 38 teeth and the pinion gear has 10 teeth the gear ratio is 381 3810.
Rear end gear ratios have a significant impact on how your car performs. So if you install a bigger more powerful engine you probably. A more powerful engine can use a higher rear end to give relaxed cruising and a higher top speed.
Early 1928 non-threaded pinion and ring set format for Service Replacement use with the early production drive shaft that was threaded for the pinion bearing lock nuts. In fact the Ford F-150 which is considered the best-selling truck of all time offers trucks with a 3151 ratio at the lowest end of the spectrum. If you constantly have a.
Engine RPM Cruise Tire Revolutions Per Mile Rear-end Gear Ratio. A 373 offeres higher RPM which equals torque but an empty truck bed on a flat highway doesnt need such a low gear. A 4301 gear ratio is very effective and popular in this division.
1800 RPM 65693811 2731. In medium-duty trucks gear ratios range from as low as 2691 to as high as 7171 depending on the. EXAMPLE With Overdrive 30.
The most popular rear-end ratio in trucks today is the 355 which sort of averages towing power and fuel economy. But you should consider a 331. For a person who tows more often and heavier loads the 373 or 410 may be more appropriate.
A-4209-AR Service Replacement gears were 3781 ratio. That first gear is commonly called granny gear because the truck wouldnt be. 320 340 350 400 axle ratios.
The higher the number the lower the ratio becomes. Rear-Axle Ratio Spec Guidelines. For a 355 axle ratio the drive shaft will turn 355 times for every one revolution of the tire.
It is controlled by the number of teeth on the ring vs. 1800 RPM 65693811 2731 x 130 3541. If you are going to be taking your truck on long trips or using it as your daily driver for hauling groceries this is a good place to start.
For off-road only applications where top speed and comfort are of no concern its open season. FORD FINAL DRIVE RATIOS. A smaller engine will need a lower rear end to give adequate acceleration.
The axle ratio tells you the number of revolutions the drive shaft makes compared to the rear axle. The certification plate can be located on the lock face of the left door edge. The numbers 355 and 373 refer to Ford truck axle ratios.
But it will also use more fuel in all situations because the engines rpm will be higher. Measuring the precise gear ratio involves the counting and subsequent dividing of the number of ring gear teeth by the number of pinion gear teeth. The most common code for this is 17 The next step would be to look at the tag on the rear end to see if the ratio matches the code on the door tag --if the tag is still attached to one of the 10 studs that holds the 3rd member to the rear end housing.
Thats how lower geared axles work but 355s and 373s are pretty close in spec if you notice any difference at all it will be a slightly higher cruising RPM. For example Ford says the 2018 F-350 Super. Low gears give fast acceleration high gears give better cruising.
This is a good ratio for the occasional towing or hauling individual. The gears wont be as wide with 373s as with 355s meaning the transmission will shift through gears quicker under normal driving conditions and wide open throttle shift points will be at a slightly lower speed. The 315 wont be a problem.
Ford cars and trucks from 1968 on have an axle code on the Certification Plate information on this plate can be used to determine if you vehicle is factory equipped with a limited slip positraction rear end - differential. Find your transmission and rear gear multiplier below. The ratio is 410 to 1.
Lets compare that to say an early 1960s Ford truck transmission with fourth gear at a 11 ratio third at 1691 second at 3091 and first at a very short 6321. Ford 725-Inch Rear Axle Ford 725-Inch Rear Axle Specifications. 15 rows A-4209 Production gears were 3701 ratio.
In this video I break down in great detail the speed at which your car will be going for every 500 engine RPM with each typical rear gear ratio for each gear. A high numerical gear ratio is called a low gear or low rear end and vice versa. In this case every 10 turns of the rear wheels your drive shaft will turn 41 times and the engine has to turn 41 times in high gear.
Stock Rear End And Gear Ratio S Ford F150 Forum Community Of Ford Truck Fans
Gear Ratio Tire Size Question Ford F150 Forum Community Of Ford Truck Fans
Gear Ratio Chart Ford F150 Forum Community Of Ford Truck Fans
2021 Ford F 150 Axle Ratio The Fast Lane Truck
0 Comments