truck rear end ratios

Those ratios provide very good acceleration with gas V-8s and diesels. Divide the number of the ring gears teeth by the number of the pinions teeth.

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There are two different spline counts out there too.

. H01 Rear Axle 307 H04 Rear Axle 411 H05 Rear Axle 373 H12 Rear Axle Eaton 21065S -- H42 Rear Axle 617 H43 Rear Axle 543 HA3 Rear Axle 529 HC4 Rear Axle 456 HC7 Rear Axle 7500 Lbs 238 HC8 Rear Axle Truck 321 HC9 Rear Axle 513 HE3 Rear Axle 3500 Lbs 307 HE4 Rear Axle 340 HF7. Complete detailed instructions included. Eaton single axle two speed differentials.

If you plan on towing a fifth-wheel trailer or anything heavier than 5000 pounds you should consider a 41 axle ratio. A 373 ratio is suitable for regular light towing. 2000 - 2002 Front Axle Model Designation changes.

For a person who tows more often and heavier loads the 373 or 410 may be more appropriate. Found in the Dodge RAM 1500 this axle ratio is an economical choice for excellent gas mileage on the highway. The axle ratio tells you the number of revolutions the drive shaft makes compared to the rear axle.

Trucks equipped with 8- 9- or 10-speed automatics may work well with 331 ratios as the new transmissions have lower 1st and 2nd gears than the old 4- 5- and 6. Count the number of teeth on the ring gear and the pinion. These are not the only ratios however.

315 rear axle ratio. This will give you the axle ratio. 1800 RPM 65693811 2731 EXAMPLE Without Overdrive.

Not all the carriers are the same size and not all carriers have the same bolt patternnumber. Method 1 requires that you take apart your differential but there many be an easier way. Accurate identification using the GM RPO code assumes that the rear end has not been previously modified The prefix is usually F G or H when referring to.

198 rows If you have a 342 rear end ratio and need more towing power you would switch to a. Eaton front with traction control. Most class 8 semi trucks have a gear ratio of between 226 and 3361.

The reasons why make perfect sense with a little bit of insight. How axle ratio impacts towing capacity. Eaton single axle differentials.

The best ratio is to have your engine run at the sweet spot RPM at the speed you will be running most of the time. You may have a 11 bolt battern or 10 on your truck. Common in the Ford F-150 equipped with a five-liter V8 engine this ratio offers fuel economy on par with other V6 engines.

If you run the east coast mainly then 65 if you run out west allot the 70 or 75 in the sweet spot. The Chevrolet Silverado offers a nearly identical set with a 323-to-1 ratio. 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. The stamped numbers on the left or right axle tube can also identify the axle. Much has changed over the past 5 years or so with axle ratios.

The standard 2021 Ram 1500 axle ratio of 321. Two common base axle ratios for trucks are 308 and 342. C 2wd pickups cab n chassis and Blazer Suburban K 4wd pickups cab n chassis and Blazer Suburban and the P model line is Chevy Vans.

For a 355 axle ratio the drive shaft will turn 355 times for every one revolution of the tire. The numbers 355 and 373 refer to Ford truck axle ratios. BEST TOWING RATIO.

These ratios are determined by the number of teeth on the pinions which impact the number of turns the axle makes. 321 rear axle ratio. CHEVROLET ONLY Fits 55 1st series thru 62.

Fits stock drive line. For example the 2021 Ram 1500 is sold in three axle ratios 3211 3551 and 3921. Chrysler Dodge differential gasket patterns can help you indentiy what rear end you have.

Edmunds guide to axle ratios cites the Ram 1500 for figures. Rs381 rs401 rs402 rs404 rs460 rs461 rs480. Engine RPM Cruise Tire Revolutions Per Mile Rear-end Gear Ratio EXAMPLE Without Overdrive.

When you multiply the two ratios it equals the final drive ratio. Dc402p dc461p eaton rear with traction control. GM Light Duty Truck Service Manuals cover the following models.

8 TRACK LOC. When you hear car drivers refer to numbers such as 3081 3731 or even 4101 they discuss the ring-and-pinion gears ratio within the rear axle. A semi truck using a gear ratio of 226 would have good fuel economy and sufficient power for small tasks however it would lack a great deal of.

In general the best towing axle ratio for most of the post-2010 pickups is in 355 or 373. Limited Slip Differential 327. This is a good ratio for the occasional towing or hauling individual.

2000 RPM 65693811 3041. 1800 RPM 65693811 2731 x 130 3541. For instance the 3421 ratio included on many Canyon V-6 and Sierra 1500 models offers a good all-around blend.

What is a Rear End Gear Ratio. 152 rows Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes usually located on the placard labeled Service Parts Identification inside the drivers door panel or glove box. Most automobiles use gear ratios in the drive axle and the transmission to multiply power.

A 41 ratio allows a towing vehicle to start moving without as much throttle. Usually the Detroits like it around 1400-1550 or so is a good range. - 336 355 370 390 411 433 456 488 and 529.

These codes are arranged in alphanumeric order. With our new 338 to 1 ratio ring and pinion you can cruise at 65 mph. That said if you regularly tow heavy trailers.

C10 C20 C30 K10 K20 K30 P10 P20 P30. 8 DETROIT LOCKER. 9 DETROIT LOCKER.

The Axle Ratio is stamped on a Gear Ratio Tag on the axle cover. 15040s 19050s 22121 23121. FIGURING REAREND GEAR RATIO Ring Pinion FORMULA.

9 TRACK LOC. The standard axle ratio found in a GMC truck or SUV has been carefully selected according to the vehicles specific body style and engine in order to provide the best all-around mix of performance towing strength and efficiency. Each one affects the trucks towing capacity.

The differential ratio is stamped on the bottom of the pumpkin. This sounds very good will it work on my 1954 chevy truck 3100 with the 4 speed hydromatic transmission.

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