How Much Does A 350 Engine Weigh? Complete Guide

If you are looking for a 350 engine to replace your old one but are not sure whether it has the same power and weight ratio, what should you do?

How Much Does A 350 Engine Weigh Complete Guide

Is it possible to know how much a 350 engine weighs? Here’s what you need to know!

How Much Does A 350 Engine Weigh?

There will be differences in weight between the engine lines and upgraded versions. With an average car engine weighing around 2000 pounds, the Chevy 350 engine weighs between 400 and almost 4000 pounds.

The following is a list of the weights of each type.

How Much Does A 350 Engine Weigh?

LM1, L65, LT-9

In terms of weight, how much does the Chevy 350 engine weigh? Heavy engines like the LM1, L65, and LT-9 weigh between 3500 and 3660 pounds.

Following the LM1, the L65 weighs 3501 lbs, and the LT-9 weighs 3500 lbs, which is mostly used in big trucks with a maximum weight of 8,500 lbs.

In combination with a Q-jet engine, the LM1 combustion engine produces 155-175 horsepower.

Depending on the car type and model year, the voltage output may vary.

There were four kinds of ignition mechanisms in the LM1, including electrical or mechanical, and input or traditional carburetors. There was no alteration or modification to these elements during their existence.

In comparison to the L48 motor, the L65 is equipped with Rochester carburetors.

A 250 horsepower maximum output was available on the Chevy when it debuted. There was a slight reduction in its efficiency to 145 horsepower, but the car’s torque was still around 255 pounds-feet.

In addition to the LT-9 tractor variant, the engine was installed in lorries, vans, and transport wagons of the K20 and K30 series.

There is 160 HP of power available at 3,800 RPM, and 250 lb-ft of torque available at 2,800 RPM from this permanent magnet motor.


Between 1970 and 1974, the L46 engine was used primarily in Chevrolets.

Here is an answer to the question: How much does a 350 Chevy engine weigh?. It was widely used in sports cars and was available in a variety of configurations.

The L46 is derived from the small motor type. Identification was aided by the forging code 186, 4-bolt electrics, 2.02-inch input, and 1.6-inch carburetor, and a volumetric efficiency of 11.0:1.

Fuel efficiency was an important aspect of the L46’s motor since it had a powerful motor. In addition to 350 horsepower, it delivers 300 pounds-feet of torque.

A vehicle of this kind can meet all-terrain requirements due to its strength. In spite of the fact that it was retired after two separate years, many motorists still prefer gasoline engines with this type of engine.


What is the weight of a small block Chevy engine? It weighs 550 pounds, making it a lighter engine.

A TPI ignition system was used instead of a cross-fire ignition system for the first time on a Chevrolet 350 V8 engine. Chevrolet used the L98 as its standard motor.

Spark ignition systems such as TPI earned a reputation for being among the most sophisticated in the development of average V8 engines.

Various detectors were needed to monitor gasoline via consecutive valve covers, and the ECM and processors processed the information.

The L98 witnessed a continuous improvement in its performance compared to earlier Chevy 350 V8 engines, whose speed dropped over time. The output went from 230hp to 240hp and then 245hp.

LS9, LT-1

With a weight of 531 lbs and 465 lbs, respectively, the LS9 and LT-1 are probably the lightest 350 Chevy engines.

At full load, the LS9 produced 275 lb-ft of torque and 165 horsepower.

An intake manifold, a water pump, forged cast iron cylinders, and a parched fuel pump made this a remarkable technical achievement.

It was soon deemed the regular motor in the C6 Corvette due to the advancements in engine technology.

Despite its high rotation speed, people found it polite at low speeds and exceptionally modifiable.

According to its effectiveness, LT-1 was a warrior among its peers. Chevy preferred this motor because of its 350 horsepower. There’s no doubt that this ability was a dominant force in the past.

One of the most powerful engines of its era was the Chevrolet 350 LT-1. It had 370 horsepower and could propel you across any terrain with ease. The first models were created in 1970.

Chevrolet Engine Weight Chart

The engine weight chart was found on the internet on our travels, and we thought you might be interested. It should come in handy when figuring out if you have to replace springs after an engine swap, among other things

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History and replacement parts of the Chevy 350 engine


Small lot motors were introduced as 256 metric tons engines with 350 diesel engines. As a result, it evolved into cars like the Chevy Sports car that have 350 cubic inch engines.

Several conventional and extra trucks were used to operate it all.

The Chevrolet 350 diesel engine was made available as a gasoline version in the 1980s. Other motor vehicles with powerful engines still utilized four-barrel engines.

Chevrolet 350 engines are equipped with emissions equipment that follows automobile technology, followed by injector fuel tanks.

Replacement Part

There are a lot of engines to reconstruct, but the 350 is among the smoothest.

In addition to custom pistons, piston pins, and discharge systems, the engine is typically tuned to improve efficiency with a profusion of displacement parts.

Several websites provide illustrations, as well as instructions for basic maintenance, alterations, and motor repairs.

What are the heaviest Chevy 350 engines?

According to reports, the LM1 is one of the heaviest engines in the 350 series. Approximately 3660 pounds of weight and 155 to 175 horsepower are delivered. Q-jet engines produce a higher horsepower output.

With its electric ignition, automatic starting valves, and input carburetors, the LM1 was one of the first 350 engines to feature them.

Similarly to the 350, the L65 is a heavy engine. The Rochester carburetor makes it comparable to the L48 motor. There are 3501 pounds in it.

What are the heaviest Chevy 350 engines

Chevrolet launched this engine, which produced 250 horsepower at its peak. The torque rating was later lowered to 255 lb-ft, and the efficiency was reduced to 145 hp.

350 tractors were available in the LT-9 tractor variant. Each K30 and K20 lorry, transport wagon, and van was equipped with it. It produces 160 horsepower and 250 pounds-feet of torque. A 3500-pound weight is attached to it.

A heavy 350 engine, the L46 is another option. There is a little over 3500 pounds of weight on it. 1970 was a popular year for this 350 engine.

It was primarily used in sports cars and was a gas engine. A powerful 350 horsepower and 300 pound-feet of torque were delivered by the L46’s motor.

Which Are the Lightest Chevy 350 Engines?

A lightweight 350 engine, the LS9 is probably one of the most popular. This engine produces 165 horsepower and 275 pounds-feet of torque. It weighs approximately 530 pounds.

A cast iron cylinder head, titanium welded frames, a fuel pump, a water pump, and a water intake manifold are all part of the engine. LS9 engines are among the most powerful and were used in the C6 Corvette regularly.

Which Are the Lightest Chevy 350 Engines

weighing 550 pounds, the L98 is another lightweight engine. Rather than using a cross-fire ignition, this 350 V8 engine uses TPI (Tuned Port Injection). Most Chevys had this motor as standard equipment.

In contrast to other V8 engines, the L98’s performance has increased over time. 230 horsepower was delivered initially, then 240 horsepower, and now 245 horsepower.

As a warrior engine, the LT-1 was regarded as one of the best. Most Chevys were equipped with this motor that produced 350 horsepower. At its peak, it could deliver over 370 horsepower despite weighing just 465 pounds.

Why Was the Chevy 350 So Popular?

Why Was the Chevy 350 So Popular

Simple Design

Chevrolet 350s were popular because they were easy to work with and had a simple design. Furthermore, it was a highly reliable car. There were not many parts or fluids that could go wrong on the Chevy 350 because it had a regular engine.

Cheap Parts

Fortunately, Chevy 350 parts were inexpensive because the engineering was simple. Since they were easy to repair, they were popular with many new car owners after the war. Due to its V8 engine, it was capable of withstanding harsh conditions.


Despite its reliability and ease of maintenance, the 350 was incredibly reliable. Compared to previous models, the 350 was more fuel efficient due to its aluminum engine block. As a result of the camshaft having two valves per cylinder, the engine’s emissions were reduced as well.


With decent power and an affordable price, the 350 was a good buy. The vehicle was not as powerful as the more expensive ones, but buyers still purchased it.

Long-Lasting Engine

There was a long-lasting engine in the Chevy 350. Several different vehicles were able to use it due to its durability. Modern cars have been modified to use this engine, which fits into smaller frames.

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Frequently Asked Questions

What is the maximum horsepower a 350 block can handle?

The small block motor 350 can generate over 450 horsepower with an original single-cylinder engine with alternative crankshafts, gears, valves, and fasteners.
As a comparison, some Chevy big blocks can produce up to 800 horsepower with similar replacement parts.

What Are The Best Chevy 350 Engines?

One of the most powerful engines of its time was the lightweight 350 LT-1.
With 370 horsepower in its first model, it still holds the record despite pollution issues, so you might be able to take on whatever adventure you wish.
Aside from that, its output power was reduced from 370 horsepower to 145 horsepower to comply with environmental protection regulations. Because of this, it’s ranked as one of the most environmentally friendly engines.
Nevertheless, there are always going to be some engine-related problems, such as Chevy knock sensor bypass.
Therefore, regular maintenance and getting to know the engine are key.

Which Is Better Between A 305 Engine And A 350 Engine?

I would recommend the 350 most of the time. In spite of the 350’s superior power, the 305’s lower capacity, intakes, and actuators cause it to consume more fuel. 
There are more outlets, controls, and outflows as a result. In other words, even if 305s have a higher fuel economy, their shortcomings are not compensated for by the higher fuel economy.


Depending on the engine type and modifications, the Chevy 350 weight will vary.

There is a range of weight from 400 to over 4000 pounds on the 350 engine, with an average weight of 20 pounds.

There will be a variety of specifications for different types.

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