6 Best Flowing Chevy Exhaust Manifolds Reviews

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The link between your gas exhaust system and your engine needs to be at normal pressure and they should be at a point where the horsepower and tuning system can be done with efficiency.

Exhaust manifolds keep the airflow at a good speed in your car system, which helps your vehicle provide a better performance aspect.

So for your convenience, I have listed out some of the best flowing Chevy exhaust manifolds in this list below, saving you a lot of useless research and a good amount of money, from all the greater aspects to the not so great ones are explained below, so let’s stop wasting some time and start reading!

6 Top Best Flowing Chevy Exhaust Manifolds Comparisons

Smoothie Rams Horn Exhaust Manifolds

Smoothie Rams Horn Exhaust Manifolds

MMI Motorsports Tight Fit Design Stainless Steel Exhaust Header Kit

MMI Motorsports Tight Fit Design Stainless Steel Exhaust Header Kit

ECCPP Stainless Steel Shorty Header Exhaust Manifold

ECCPP Stainless Steel Shorty Header Exhaust Manifold

TUPARTS Shorty Headers Exhaust Manifold

TUPARTS Shorty Headers Exhaust Manifold

Mophorn Exhaust Header Set

Mophorn Exhaust Header Set

Dorman 674-561 Exhaust Manifold

Dorman 674-561 Exhaust Manifold


1. Smoothie Rams Horn Exhaust Manifolds

Smoothie Rams Horn Exhaust Manifolds

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11/09/2023 10:39 am GMT

My first for this list is the Smoothie Rams Horn Exhaust Manifolds, being super user-friendly in the aspect of price and providing a good airflow system along with a long-lasting, durable effect.

These deserve the number one spot.

As the main working of any good exhaust manifold is to provide great access to gases from the different engine parts and collect it in one place to provide a good performance rate, these provide just that at a longer lasting rate.

The makers did an excellent job manufacturing these; the material is stainless steel which is durable and rust-free.

Along with this, these exhausts have a very vintage touch to them and are manufactured in a horn style way, so you get to class with quality.

Now another factor that makes them worth the money is they fit in straight plug heads or angular ones.

It does not matter, as the fitting system is amazing. The kit also comes with the hardware tools attached to simply install these exhaust manifolds without any unnecessary effort.

This provides the buyer with a great advantage of not spending too much money on buying separate hardware tools for installation, so you can say these are easy to install; you don’t need any professional help.

All the cars gases are exhaust to perfection with these, being affordable and providing such high-quality features, these exhausts come at a very reasonable rate.

Lastly, they weigh in at 25 pounds with a dimension of 19x9x8 inches, coming in a pair of two instead of a single piece which also makes them super affordable considering the price is so low.

Something a little trippy about these exhaust manifolds is that during the installation process, some cars have a different screw-in system, so they aren’t compatible with just any car.

Moreover, the fit comes off too tight or sometimes not tight enough.

  • High class with low rates
  • All gases are exhausted to perfection
  • Comes in a pair
  • Easy to install
  • The fitting is weird
  • Not compatible with every car

For this first pick, I have suggested something affordable. Moreover, these are amazing and worth the price would highly recommend them.

2. MMI Motorsports Tight Fit Design Stainless Steel Exhaust Header Kit

MMI Motorsports Tight Fit Design Stainless Steel Exhaust Header Kit
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11/09/2023 11:53 am GMT

The MMI Motorsports Tight Fit Design Stainless Steel Exhaust Header Kit efficiently combines all the engine gases in one pipe, providing the car with a good boost of performance.

You will most likely notice a difference with these exhaust manifolds on the first drive only.

Not all cars have a long tube header, which is usually what all exhaust manifolds require; hence not all are compatible with every car. On the other hand, we have these.

They reduce the backpressure of the cylinder gases and make sure that the velocity is nonexistent, and provide your vehicle with a good HP level and torque is enough to make the performance of your car seem different hence why these exhaust manifolds are the best in the market.

Changing up the car’s actual exhaust manifold isn’t every necessary, but if you’re looking for an upgraded version, then it’s a want for you.

This product, in particular, will enhance the sounding. You will see improvement in the throttle response and a huge change in the MPG. The airflow control is also excellent.

You will see a huge difference in the HP level of your car, so if you’re looking for a little play-around easy response upgrade for your car, these are the way to go.

Weighing in at only a couple of pounds, they are compatible with almost all the Chevy V8 engines from the era of 1955 and onwards, which makes them super compatible.

They are also easy to install and are average-rated, so easy to purchase by any class.

As of right now, no particular cons or drawbacks are mentioned make this a very worthwhile product.
  • Provides control over the gas velocity
  • Made from good quality stainless steel
  • Easy and needed upgrade system
  • None as of right now

If you’re looking for a quick and easy exhaust manifold change to increase the gas floatation from the pipes towards the car’s actual performance at an affordable and impressive rate, these are the best for you.

3. ECCPP Stainless Steel Shorty Header Exhaust Manifold

ECCPP Stainless Steel Shorty Header Exhaust Manifold

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This ECCPP Stainless Steel Shorty Header Exhaust Manifold is another great pick for a budget buyer looking to upgrade their Chevys, these exhaust manifolds come at a reasonable rate and high-quality resources.

The exhaust manifolds are made of good quality stainless steel. This factor alone gives them an amazing feature.

Not only will they last longer, but they also will be immune to any rusting or corrosion.

Another great factor about these manifolds exhausts is that they are compatible with any Chevy engine, whether it’s the old smaller ones or the new, more modern featured ones.

If your Chevy has the original header that came with it, any exhaust manifold is compatible with it, including his one.

This product keeps the air flowing at the right pace proving a good increase of horsepower. While tuning your car, these will for sure come in handy.

All the hardware tools are pre-included with these exhaust manifolds, this saved the buyer a lot of money and time, as all the tools are available, the installation process is also very easy the product fits in perfectly and provides a good back pressure control while also keeping the gas flow nice and easy.

Another unique feature of these is that it has a TIG-welded flange.

What these flanges do is provide the exhaust manifold with more control power, so the efficiency of keeping the airflow under pressure and providing high-quality results for your car is more noticeable.

Weighing in at 14.7 pounds and has a dimension of 18.11×14.17×5.12 inches with a good boost gas pressure system.

They are not fully compatible with every Chevy model, and the fit is not even close to working.

The plugs are too close to the tubes providing an uncomfortable fit to the exhaust manifolds.

  • Affordable
  • Comes with a proper tool kit
  • Has great velocity control
  • High HP level
  • Not compatible
  • Fitting is uncomfortable

I would highly recommend to all Chevy holders with the original header plug. These works like a charm with the original, and you can notice a huge difference in performance.

4. TUPARTS Shorty Headers Exhaust Manifold

TUPARTS Shorty Headers Exhaust Manifold

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This TUPARTS Shorty Headers Exhaust Manifold is an upgrade to your current installed ones for sure.

They have a high level of functioning power, with an improved manufacturing system, and have a long-lasting performance factor both at the moment and for longer periods.

The high-quality stainless steel is used for its manufacturing, which is liable and durable for a longer time and enhances the performance of your car to the maximum.

This stainless steel product is immune to rusting, any sort of damage and prevents leakage.

It is also compatible with off-road adventuring no matter how roughly tour drive and on what path these will last you a very long time, hence why they are said to be super sturdy and firm.

Keep all the gases flowing in the engine and cylinder at one pace and one pipe giving the car a boost in performance.

The installation process is also very easy, not tiresome, all the tools and hardware equipment are included with this exhaust manifold.

You don’t need to take the Chevy down to the auto shop a quick and easy installation process which will save you time and money.

It has a high airflow option, which makes the working very smooth and fast-paced.

Moreover, the product also has a very comfortable fit and is immune and useable at any temperature, no matter how hot or cold it is.

The hardware kit comes with a manual discussing its compatibility with a different vehicle.

This saves you the hassle. These weigh in at 22 pounds in total with a dimension of 26.18×16.54×5.51 inches.

The quality isn’t up to the high-level class, so if you’re looking for a classy option, this isn’t for you. It’s also very limited incompatibility.
  • Easy to install
  • Has all the tools pre-included
  • Affordable
  • Manufacturing is excellent
  • Low quality
  • Not compatible with enough Chevy models

If you own a Chevy model that is worth this exhaust manifold, then trust me, this will not disappoint would high recommend but do your research in advance.

5. Mophorn Exhaust Header Set

Mophorn Exhaust Header Set
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11/09/2023 04:08 pm GMT

If you want to keep the originality of the specs of your car, then this Mophorn Exhaust Header Set is perfect for you. This is manufactured using the OEM design system in mind.

It uses stainless steel for manufacturing which, as we have already discussed, is a long-lasting material and is immune to any rusting or corrosion.

This is a very important feature, steel to steel or metal to metal interaction with hot gasses and watery vaporization causes rusting, which in return causes problems in your car’s engine system.

All the hardware tools come with this mini kit, the plates included in the kit can be useable even if the headers are open. Performance-wise the work is worth the price.

They are suitable for under pressure driving, so if you’re on a long road drive or just in a place where the paths and roads are too bumpy, these exhaust manifolds will hold up pretty well.

The air flowing through these manifold exhausts is very smooth and creates no noisy sound.

These tackle the main factors as well, such as controlling the back-pressure gases produced by the car’s cylinder and also keeping the velocity in check, providing the driver a safe and smooth ride with an upgraded engine system.

When installed perfectly, you can feel an increase in horsepower instantly. These little upgrades make the tour car’s internal system run smoothly so the driving can be smoother.

These exhaust manifolds provide a sharper throttle response instead of the average one.

Furthermore, these exhausts are a plug-and-play system which means the installation process does not require too many nuts and bolts for screwing.

The pipes are also not too long, not too short; hence the fit is perfect overall.

Weighing in at 16lbs and having a dimension of 1x5x8 inches in total, it comes in a very attractive and clean silver color.

The sound system is also very pleasant and not ear-wrenching.

Moreover, the fitting is an issue on some Chevy models and it was reported by a few buyers. Some people also reported issues with the bolts.
  • Plug and play the installation process
  • Uses Stainless steel
  • Immune to corrosion
  • Increased HP level
  • Fitting issues with some Chevy models

I would highly recommend this exhaust manifold for your Chevy, worth the money if you got a little extra to spend.

6. Dorman 674-561 Exhaust Manifold

Dorman 674-561 Exhaust Manifold

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11/10/2023 01:58 pm GMT

Last up on my list is the Dorman 674-561 Exhaust Manifold for the Chevy. These are of high quality, and an efficient working mechanism will never fail you.

The air flowing factor in the engine and cylinders all gathered in these pipes causes a lot of pressure to gather up in one place for too long.

Moreover, they keep the gas flowing with ease and provide the driver with a smooth and comfortable riding experience.

These exhaust manifolds have a very easy installation process. All the hardware tools are included in the kit already.

You just need to read the manual thoroughly and get to work. Such little factors save you both a hefty installation fee cost and time.

These are manufactured in a way that provides durability and stability to the car’s internal system, making it immune to any leakage or damage that may cause problems.

The manufacturing process is very high class which is why it’s so famous in the market.

This product also has a long pipe which is the most efficient one when you’re looking for an exhaust manifold for the Chevy.

Shorter ones are very limited in working hence why this one is a perfect pick.

Industrial manufacturing is instructed in such a way that it’s made to perfectly fit all Chevy models with no hassle.

Weighing in at 12.4 pounds with a dimension of 19.5×8.6×5.6 inches and the bolts included in the kit are heat protected. This way, they won’t go bad and will last you a lot longer.

There were some problems related to bad looking welding and one person reported that he got the product with some parts missing.

So you might have to check on that before buying. Other than these, the product is totally good to go.

  • Immune to any damage
  • Bolts are heat protected
  • Comes with all the needed tools
  • Easy to put together
  • Missing some parts on delivery
  • Low quality/bad looking welding done on the product

Just make sure to check on the missing parts otherwise this exhaust manifold will come in handy. I will highly recommend it if you’re looking for a long time investment.

What To Look For When Buying Flowing Chevy Exhaust Manifolds

Buying a flowing Chevy exhaust manifold can be a little confusing.

You’ll want to make sure you get a manifold that fits your vehicle and will work with the parts you have.

The right manifold will improve your car’s performance, but if you buy one that doesn’t fit, it can cause problems.

This buying guide will help you avoid those problems.

1. Confirm If Your Vehicle Is Supported

If you want to buy a flowing Chevy exhaust manifold, you should first confirm that your vehicle is supported.

The manufacturer lists supported vehicles on their website, so make sure yours is there before buying.

The manifold’s mounting points may differ from those present on the vehicle. This will make the installation difficult or may require extensive modification.

So, it is better to double-check if your Chevy car is supported.

2. Choose The Right Design

There are two design options for exhaust manifolds:

  • Cast Exhaust Manifold
  • Tubular Exhaust Manifold

The cast design is a cheaper option and is generally preinstalled in most Chevrolet vehicles.

It’s also more prone to rusting than the tubular design. So, if you are looking for something that will last longer, it’s better to go with the latter.

A tubular design also makes sure that there is no interference from the exhaust gases. This will allow for better fuel efficiency when driving.

3. Check Build Quality

The build quality of the exhaust manifold is also important to consider. You don’t want a part with bad welding or failing after a few months of use.

So, before buying your Chevy exhaust manifold, make sure it has good reviews and is made from high-quality materials.

If the specific unit you buy has similar symptoms, you should look for a replacement or a refund from the manufacturer.

4. The Type Of Material Used

Another important thing to note is the quality of the material being used. Aftermarket manifolds come in steel and aluminized steel options.

On the other hand, OEM ones are usually cast iron. The latter is not recommended, as it can corrode.

Perhaps the best option to buy is a titanium manifold. Titanium is one of the most durable and long-lasting materials for exhaust manifolds.

It’s also lighter than other materials, which helps reduce the weight of your car. Lastly, this is the most expensive option for a Chevrolet vehicle.

5. Take Into Account The Length

There are two options when it comes to the length of the manifold:

  • Long Tube: Long tube exhaust manifolds are used mostly in racing applications. They have a long length and can reduce back pressure greatly, which is not ideal for high performance.
  • Short Tube: Short tube exhaust manifolds are generally used for cars that have limited space to work with. They offer consistent power.

6. Check Installation Procedure

Some manifolds are designed to be installed by the average person, but others require an expert or someone who has done this before.

If you don’t have experience with these types of installations, it’s best to hire a professional to do it for you.

You will have to pay labor charges, but at least you won’t risk anything with your Chevrolet vehicle.

Frequently Asked Questions

Q1. How Can I Make My Stock Exhaust Manifold Flow Better?

Yes, you definitely can. First, you should determine what kind of functions you need an upgrade to an after-market system.

It is no doubt that many companies produce aftermarket exhausts for different cars. It is a common thing to upgrade sports cars and other vehicles.

But cars with a small stock exhaust struggle with the flow as adding power on the boosting parts of the engine which the exhaust can’t keep up.

A free-flowing exhaust is good, but too much flow can also cause bad effects, and you may not gain any additional power.

Q2. How Much HP Does An Exhaust Manifold Add?

If a car is producing 190 (hp) could also increase to about over 225 (hp), which is a very impressive increase.

So to sum it all up, exhaust systems increase to about 15 to 20 percent house power (hp).

Moreover, it solely depends on you, Chevy. If you tune it after adding a good exhaust manifold, then the Hp can increase even more.

Q3. How Do I Temporarily Fix An Exhaust Manifold Leak?

To fill the breaks, minor cracks in expensive manifolds are often united or bonded.

This process can be done by heating the manifold in an oven and welding with specialized tools and equipment.

Any heating process can stick it right back. You can even fix it with a good tape for any emergency situation.

Q4. Can I Replace An Exhaust Manifold Myself?

Yes! You surely can with the right tools and equipment like wrenches and sockets. It can take you a long period of time to replace it.

If you are doing it alone, it allows a lot of components of engine removal to gain excess to exhaust manifold. Doing it yourself saves you a bit more money.


Purchasing a good Chevy 350 exhaust manifold based on my in-depth product researched

I’ve got you covered with this awesome list of some of the best flowing Chevy exhaust manifolds.

The list has all the need-to-know specs, modifications, and features of the exhaust manifold keeping your car’s gases inflow and giving you a fun and smooth driving experience.

My personal favorite and recommendation would be the Smoothie Rams Horn Exhaust Manifolds; it has some great, long-lasting features with a very liable air flowing system.

Moreover, it keeps the backpressure gases in check and improves the velocity level of the car, providing you enough HP level/torque. Don’t waste a single second and get yours right now.