Much to mine surprise, i learned that transmission weight deserve to determine the means we go around working on our car, what we’re able to in reality do, shipping costs, performance, and also more.

You are watching: How much does a transmission weigh

How much does a transmission weigh? most transmissions usually weigh in between 100 and 400 pounds (45 come 181 kg), return the type of auto can cause this number come be much higher.

The key to the transmission is in how it’s designed and functions, i m sorry is likewise related come weight, by transmitting strength from the engine come the wheels.


Without it, you could have the most an effective engine in the world, yet you’d still never ever leave her driveway.

Like any type of vehicular element, no all transmissions are created alike, and neither execute they all weigh the same.

The load of the transmission

While many transmissions are within the 100 and also 400 pound mark, there are, however, some distinct exceptions, though for the basic public and typical vehicles, this is the typical weight selection of a transmission.

Why does transmission weight matter?

You could need to understand the answer if you’re thinking around working underneath your car, on the infection itself, buying components for it, or listing it because that sale. Regardless, it’s a valuable piece of data come understand.

Today, we’re not just going to give you the answer to transmission weight, however we’ll likewise be breaking under the ins and outs of the answer therefore you have the right to be a well-informed driver. Prepared to learn more? Let’s rev it up!

Common transmission Weight

As stated above, depending upon the make and also model of your car, your infection can typically weigh anywhere between 100 and also 400 pounds.

It must be obvious that the size and weight the your transmission will rise as you dimension up your vehicle. This method a smaller sedan will have actually a an ext lightweight one 보다 a minivan.

Look for models such together a front-wheel-drive sedan to have actually transmissions that weigh approximately 100 pounds. A big van or SUV may have actually one in ~ 400 pounds or heavier. When it involves transmission weight, front-wheel drive vehicles and rear-wheel journey ones carry out no present much variation.

The variety of speeds accessible on your transmission

Keep in mind that while you may be able to lift a little transmission by one hand, it’s always wisest to usage a cherry picker or a transmission jack as soon as you’re working with one.

Which Is Lighter: automatically or manual Transmissions?

Later, we’ll talk about the high-level differences between a manual and automatic transmission, but it’s only herbal to wonder which of these two types weighs the most. In general, there is only in between 50 and also 75 pounds the difference in between the load of automatic and manual transmissions, with the hands-on most frequently being lighter. Still, it’s useful to do the comparison, particularly if you’re in the industry for a brand-new one for her car.

In numerous cases, a manual transmission is the lightest bet. This is contrasted to automatically models the possess the same torque capabilities and gear ratios. That heavier dimension helps to explain why automatically models have poorer fuel economy and also drive train loss.

Why do automatic models sweet more? The prize lies in their makeup. Automatically transmissions room enclosed in a cast iron case, while many manual models depend on an aluminum one.

This distinction alone accounts for a weight selection of between 20 and also 30 pounds.

There are likewise the hardware distinctions to account for. In general, one automatic transmission includes an ext parts 보다 a hands-on one. This requires both the mechanism itself, as well as its housing, to it is in on the larger and also heavier side.

Does this median an automatic transmission is heavier and also therefore makes your automobile slower? not at all.

The weight distinction is not significant enough to affect performance. This means you have to opt for the model that girlfriend prefer.

Some lean toward a manual transmission because that the hand-operated driver control and the means it enables them come live the end their childhood dreams of owning a specific vehicle, such as my own an individual favorite, the Lamborghini Countach. Others like the smooth ride and also easy operation of an automatically model.

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By Brian Snelson from Hockley, Essex, England – Lamborghini Countach, CC through 2.0, https://commons.wikimedia.org/w/index.php?curid=18326442

What Is the Heaviest transmission Model?

To date, among the heaviest well-known models of transmission is the Allison 4500 uncovered in the tool Tactical car Replacement (MTVR). This seven-speed infection is design to stand up to up come 1200 foot-pounds of entry torque, also in a auto with as much as 60,000 pounds of gun weight.

The Allison 4500 is mainly used in purpose-designed armed forces vehicles, despite it has gotten some commercial use in the firefighting sphere.

Using infection Data Wisely

It’s beneficial to recognize the load of your transmission, specifically if you’re planning to take it in for a replacement.

In part cases, you may also need to delivery it off for repairs or have actually a instead of unit shipped to you. Knowing the weight can aid you calculate her shipping expenses ahead that time.

If you’re unsure the the specific weight of her transmission, take it it come your neighborhood mechanic who can safely sweet it for you. This is recommended end trying come disassemble and measure the yourself, which have the right to pose a slew of threats to her physical safety.

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Not every transmissions room of the very same weight, design, size, or even function.

Car transmission 101

Now that we’ve sorted out assorted transmission weights, let’s take a fast review the what this item of tools does.

What go a infection do?

In short, a transmission absorbs the rotational power that your engine generates, then delivers it to your vehicle’s wheels. That basic function is to regulate the level the speed and also torque accessible to your drive wheels.

What types of transmissions are there?

There space two varieties of transmissions: manual and also automatic. hand-operated transmissions require the driver/operator to change or adjust gears as they drive, while automatic transmissions carry out the shifting of gears itself as speed and also task requirements adjust during driving.

Now let’s check out the highlights the each.

Manual Transmission

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Manual transmissions require the user/driver come change/shift with the assorted gears by hand, “up” to high or “down” come low, or also reverse.

A hands-on transmission features a gearbox that adjusts speed and also torque for various driving conditions. It functions according come a principle known as equipment ratio.

In a an easy transmission mechanism, there space three key components: the input, intermediate shaft, and output.

The intake connects to the intermediate shaft to save it rotating in ~ a constant speed. Meanwhile, the intermediate tower connects come the output equipment set, the gears the which turn at varying speeds depending on the equipment ratio.

When you adjust the gears, you affect these ratios, which influence the speed and torque the the vehicle. These ratios work-related in a converse manner, meaning that together you boost torque, you lower speed and vice versa.

For instance, a three-speed mechanism will have the adhering to ratios:

1st Gear: Low-speed output, high wheel torque2nd Gear: Medium-speed output, center wheel torque3rd Gear: High-speed output, low wheel torque

When you’re going up a steep incline, you need more torque. In this case, your gearbox will mitigate the rate at her transmission, generating higher torque in ~ the very same power input.

Gear and also Shaft Connections

Note the the output gears aren’t resolved with the output shaft. Rather, over there is a slight clearance present. One gear affixes at a time, offering the output tower the rate of that associated gear.

The gears affix come the obelisk via a hub attached in between them. A sleeve lies on peak of the hub. As the sleeve moves, it offer to connect each appropriate gear with the shaft.

The complication? The hub and gear operate at various speeds under typical operation. This makes the sleeve-gear link impossible to achieve.

A synchronizer ring, paired through what’s well-known as a friction cone, can assist to align the equipment speed with the sleeve because that a smooth connection.

When you desire to change the gear, you’ll need to disengage the clutch, i m sorry discontinues power and causes a short-term drop in speed. This defines why anyone through a manual transmission is offered to a bumpy ride!

Automatic Transmission

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Automatic transmissions take it almost all of the job-related out of shifting. They select gears because that the driver, based upon conditions and what requirements to be excellent at a given moment.

Most high-performing automobiles come equipped through an automatically transmission.

Compared come the equipment pair that controls an automatically transmission, an automatic one centers ~ above a planetary equipment set, or epicycloidal. Manufacturers developed automatic transmissions come take treatment of the start-stop power discontinuation that occurs in hands-on models.

Brazilian engineers arisen the first automatic transmission in the at an early stage 1930s, offering the prototype to general Motors. In turn, GM debuted the “Hydra-Matic” infection in that is 1940 Oldsmobile.

The main components of a planetary gear set include:

Ring gearSun gearPlanet gearCarrier

Each collection features two inputs and one output. By giving different speeds come the ring and also sun gears, girlfriend can accomplish varying speeds at the output. Locking one component makes the others change pace, moving various gear ratios.

In direct drive, the input and also output shafts turn at the exact same speed. In overdrive, the output obelisk turns faster than the input shaft.

Planetary equipment Control

In a simple automatic transmission, there are two planetary sets. One of the entry of one set attaches seamlessly to the output of the other. In various other words, they kind one cohesive component.

A transmission hydraulic device works in conjunction v a clutch fill (set that metal and also friction discs), oil pump, and valve body to control the planetary equipment sets.

The earth gears connect to one an additional via a common carrier. This enables them to spin ~ above shafts recognized as pinions, attached to the carrier. Together they’re in a constant mesh, you can readjust gears without engaging or disengaging any type of of them, unlike through a hands-on transmission.

How go the transmission understand which components of the planetary equipment system come assign together the entry gear, output equipment or as stationary?

Brake pads and also clutches take treatment of this task. Brake pads can tighten to do a ring or sun equipment stationary or loosen to enable it come spin. The hydraulic mechanism controls i m sorry of the 2 actions that performs.

When the metal discs in the clutch load press together as result of mechanical, hydraulic, and also electrical design, the clutch engages. In turn, this can reason a planetary gear to end up being an intake gear.

Or, it can stop it and turn that stationary instead. The planetary gear link determines exactly how the corresponding materials move, which equates to equipment ratio. The planetary arrangement controls exactly how much strength the transmission sends out to the remainder of your car’s drivetrain.

Even under load and without a clutch, an automatic transmission permits drivers to transition between gears v ease, helping them remove the awkward managing that’s become the trademark of some manual versions.

Main contents to Know

An evaluation of infection weight need to take right into account the various materials that consist of a transmission. Though these will certainly vary depending upon whether you have a hands-on or automatic model, here are the primary pieces come know:

Input shaftCountershaftOutput shaftPressure plateDiscFlywheelClutchShift forkPlanetary gearsTorque converterOil pumpValve bodyComputer controlsGaskets and also seals

Keep in mind that these materials are those the come traditional on hands-on or automatic transmission models. Over there are various other models, including semi-automatic and dual-clutch transmissions, that have a unique set of gear.

There is additionally an emerging model well-known as a Tiptronic transmission, additionally called a Sportmatic or Steptronic transmission. These are essentially automatic models that have the right to be controlled either manually or via computer. Again, these may have unique components and also controls the aren’t included in manual or automatic models.

Transmissions to Tools: Advice You deserve to Trust

It isn’t basic being handy around the house. In addition to the obligation to deal with a leaky faucet, repair a damaged shelf, or take it a look under the hood come the need for a top-notch toolset.

Without a preserve arsenal that supplies, even the finest household handyman could be calculation helpless. Yet, with so numerous on the market, it can be difficult to discern which strength tools and equipment room the best.

Today you to be wondering, “How lot does a transmission weigh?” Tomorrow, you might need come inquire on i m sorry DeWalt cordless impact wrench is the ideal fit for her job.

That’s whereby we hope to come in.

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