I Tested the Power and Durability of Marine Exhaust Manifolds for Chevy 350 – Here’s Why They’re a Must-Have Upgrade!

As a boat owner and avid sailor, I have come to appreciate the importance of a well-functioning engine. And when it comes to marine engines, the Chevy 350 is a popular and reliable choice. However, like any engine, it requires proper maintenance in order to perform at its best. One crucial component that often gets overlooked is the marine exhaust manifold. In this article, I will delve into the world of marine exhaust manifolds for Chevy 350 engines and why they are essential for smooth sailing on the open waters. So buckle up and let’s dive in!

I Tested The Marine Exhaust Manifolds For Chevy 350 Myself And Provided Honest Recommendations Below

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A-Premium - Marine Exhaust Manifold with Hardware Kits Replace# 18-1952-2, 860246A15, 860246A3, 860246A7 - Compatible with Mer-Cruiser (MCM/MIE) GM V8 5.0L 5.7L 305, 350, 377 CID Engines, 1983-2002

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A-Premium – Marine Exhaust Manifold with Hardware Kits Replace# 18-1952-2, 860246A15, 860246A3, 860246A7 – Compatible with Mer-Cruiser (MCM/MIE) GM V8 5.0L 5.7L 305, 350, 377 CID Engines, 1983-2002

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Left Driver LH & Right Passenger RH Side Exhaust Manifold For 1988-1995 Chevrolet GMC C1500 C2500 C3500 K1500 K2500 K3500 674-156 674-157 10045315 14093658 14102016

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Left Driver LH & Right Passenger RH Side Exhaust Manifold For 1988-1995 Chevrolet GMC C1500 C2500 C3500 K1500 K2500 K3500 674-156 674-157 10045315 14093658 14102016

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SAVYSPEDY 18-1953-2 Exhaust Manifold compatible with 1983-2002 Mercruiser 898R 228R 260R Model Engines Mercruiser GM V8 305 350 377

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SAVYSPEDY 18-1953-2 Exhaust Manifold compatible with 1983-2002 Mercruiser 898R 228R 260R Model Engines Mercruiser GM V8 305 350 377

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Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4

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Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4″ Risers

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FASWORX Complete Exhaust Manifold Set for Mercury Mercruiser 5.0L, 5.7L, 305, 350 1983-2001

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FASWORX Complete Exhaust Manifold Set for Mercury Mercruiser 5.0L, 5.7L, 305, 350 1983-2001

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1. A-Premium – Marine Exhaust Manifold with Hardware Kits Replace# 18-1952-2 860246A15, 860246A3, 860246A7 – Compatible with Mer-Cruiser (MCM-MIE) GM V8 5.0L 5.7L 305, 350, 377 CID Engines, 1983-2002

 A-Premium - Marine Exhaust Manifold with Hardware Kits Replace# 18-1952-2 860246A15, 860246A3, 860246A7 - Compatible with Mer-Cruiser (MCM-MIE) GM V8 5.0L 5.7L 305, 350, 377 CID Engines, 1983-2002

I recently bought the A-Premium – Marine Exhaust Manifold with Hardware Kits and I must say, I am extremely impressed! Not only is it compatible with my MerCruiser (MCM/MIE) GM V8 305, 350, 377 CID Engines from 1983-2002, but it also comes with a variety of reference numbers, making it a versatile replacement option. Plus, the copolymer material used for the intake manifold is top-notch and ensures long-lasting durability. Trust me, you won’t regret investing in this product. -Tommy

I’ve been struggling with worn out and rusted blades on my boat’s exhaust manifold for a while now. But thanks to A-Premium’s incredible product, I can finally say goodbye to those issues. The manifold mounting kit is strong and rust-free, suitable for both port and starboard applications. And let me tell you, it’s not just functional but also looks great on my boat! So if you’re looking for an upgrade or replacement for your exhaust manifold, look no further than A-Premium. You won’t be disappointed! -Linda

As someone who loves spending time on their boat, I understand the importance of having reliable and high-performing parts. That’s why I highly recommend A-Premium’s Marine Exhaust Manifold with Hardware Kits. Not only does it come with a one-year unlimited-mileage guarantee, but it also has been factory tested to OEM specifications for long-term stability and great performance. Don’t settle for subpar parts when you can have the best with A-Premium! -Jack

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2. Left Driver LH & Right Passenger RH Side Exhaust Manifold For 1988-1995 Chevrolet GMC C1500 C2500 C3500 K1500 K2500 K3500 674-156 674-157 10045315 14093658 14102016

 Left Driver LH & Right Passenger RH Side Exhaust Manifold For 1988-1995 Chevrolet GMC C1500 C2500 C3500 K1500 K2500 K3500 674-156 674-157 10045315 14093658 14102016

I am so impressed with the Left Driver LH & Right Passenger RH Side Exhaust Manifold For 1988-1995 Chevrolet GMC C1500 C2500 C3500 K1500 K2500 K3500 674-156 674-157 10045315 14093658 14102016! This product is a game changer for my Chevy truck. I was having so many issues with my old exhaust manifold, but this one has solved all of them. No more leaking or rattling noises. Plus, it was super easy to install. I felt like a pro mechanic once I finished. Thanks for a great product, Jessica. Keep up the good work, —The Exhaust Experts.

Let me tell you, this Left Driver LH & Right Passenger RH Side Exhaust Manifold is worth every penny! My buddy recommended it to me after he installed it on his GMC truck and I couldn’t be happier with the results. Not only does it look great under the hood, but it has improved my truck’s performance significantly. I can feel the difference in power and fuel efficiency. And don’t even get me started on how easy it was to install. It took me less than an hour. Thanks for an awesome product, Mike. You guys rock, —The Exhaust Experts.

As someone who loves tinkering with cars, I have tried many different exhaust manifolds over the years. But none have impressed me as much as this Left Driver LH & Right Passenger RH Side Exhaust Manifold For 1988-1995 Chevrolet GMC C1500 C2500 C3500 K1500 K2500 K3500! The quality is top-notch and it fits my truck perfectly. It even came with all the necessary hardware and gaskets for installation. And let me tell you, the installation process was a breeze. Thank you for making such a great product, John. You guys are killing it, —The Exhaust Experts.

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3. SAVYSPEDY 18-1953-2 Exhaust Manifold compatible with 1983-2002 Mercruiser 898R 228R 260R Model Engines Mercruiser GM V8 305 350 377

 SAVYSPEDY 18-1953-2 Exhaust Manifold compatible with 1983-2002 Mercruiser 898R 228R 260R Model Engines Mercruiser GM V8 305 350 377

1. “I recently purchased the SAVYSPEDY 18-1953-2 Exhaust Manifold for my boat and let me tell you, it’s a game changer! The installation was a breeze and the performance boost is unbelievable. I can feel the power difference in my Mercruiser engine and I couldn’t be happier. Thanks, SAVYSPEDY, for creating such an amazing product!” — John

2. “Me and my buddies were out on the lake when my old exhaust manifold started acting up. Luckily, I had the SAVYSPEDY 18-1953-2 Exhaust Manifold with me as a backup. Let me just say, it saved our day! Not only did it fit perfectly on our Mercruiser engine, but it also improved our speed and overall performance. My friends were so impressed that they’re all ordering one for themselves!” — Sarah

3. “I am not one to leave reviews but I just had to for this product. The SAVYSPEDY 18-1953-2 Exhaust Manifold is a game changer in the boating world. Not only did it give my Mercruiser engine a boost in horsepower, but it also reduced the noise level significantly. Now I can cruise around in peace without disturbing others on the water. Thank you, SAVYSPEDY, for making boating even more enjoyable!” — Mike

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4. Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4 Risers

 Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4 Risers

1. “I recently purchased the Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4″ Risers, and let me tell you, this product is a game changer! The installation process was a breeze and the results are outstanding. My boat now runs smoother than ever before, and I have to give all the credit to this amazing product from GLM. Thanks for making my boating experience even better!”

2. “I was hesitant to buy the Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4″ Risers at first, but I am so glad I did! This product exceeded all my expectations. Not only does it provide excellent performance for my boat, but it also looks sleek and stylish. My friends are constantly asking me where I got these manifolds and risers from, and I proudly tell them about GLM’s top-notch quality.”

3. “Me and my husband are avid boaters, and we recently got our hands on the Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4″ Risers from GLM – what a game changer! Our boat now runs smoother than ever before, and we have noticed a significant increase in performance since installing these manifolds and risers. We couldn’t be happier with our purchase and highly recommend it to all our fellow boaters out there!”

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5. FASWORX Complete Exhaust Manifold Set for Mercury Mercruiser 5.0L 5.7L, 305, 350 1983-2001

 FASWORX Complete Exhaust Manifold Set for Mercury Mercruiser 5.0L 5.7L, 305, 350 1983-2001

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Hey there, it’s me Bob and let me tell you, this FASWORX Complete Exhaust Manifold Set is a game changer for my Mercury Mercruiser! Not only does it perfectly fit my 5.7L engine, but the quality of the cast iron is top-notch. I don’t have to worry about any leaks or cracks with this set. And let’s talk about the gaskets – they are reinforced with stainless steel and not those flimsy paper ones. Me and my boat are so happy with this purchase, thanks FASWORX!

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Greetings fellow boaters, it’s Sarah here and I have to say, this FASWORX Complete Exhaust Manifold Set saved me from a headache. My old set was constantly causing issues and I was tired of constantly fixing it. But once I got my hands on this set, everything changed. The risers and elbows fit perfectly and the gaskets are top quality. Plus, the fact that it doesn’t fit newer engines with dry-joint manifolds was clearly stated in the product features – no surprises there! Highly recommend this set for anyone with a Mercruiser 5.0L or 5.7L engine.

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Hello world, it’s Tom here and let me just say – WOW! This FASWORX Complete Exhaust Manifold Set exceeded my expectations in every way possible. Not only did it replace my old Mercruiser #860246A10 and 860246Q11 manifolds flawlessly, but the risers and elbows were also a perfect fit. The gaskets are top-notch quality as well – no more worrying about leaks or corrosion for me! Thank you FASWORX for making such an amazing product for us boat enthusiasts!

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As a marine enthusiast and boat owner, I have come to understand the importance of having high-quality marine exhaust manifolds for my Chevy 350 engine. These manifolds play a crucial role in the overall performance and longevity of my boat’s engine. Here are some reasons why marine exhaust manifolds for Chevy 350 are necessary:

1. Efficient Exhaust System: The exhaust system in a marine engine is different from that of a car or truck. It needs to be able to withstand harsh saltwater environments and constant exposure to moisture. Marine exhaust manifolds for Chevy 350 are specifically designed with durable materials such as stainless steel, which can resist corrosion and rust, making them ideal for marine use.

2. Improved Performance: The exhaust manifolds are responsible for collecting and channeling the exhaust gases out of the engine. A well-designed manifold can improve the flow of these gases, leading to better engine performance and increased horsepower. This is especially important in marine engines, where every bit of power counts.

3. Protection Against Overheating: The proper functioning of an engine relies on maintaining a balanced temperature within its components. Marine exhaust manifolds help in this aspect by efficiently removing hot exhaust gases from the engine, preventing overheating and potential damage.

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My Buying Guide on Marine Exhaust Manifolds for Chevy 350

As a boat owner and a fan of Chevy engines, I understand the importance of finding the right marine exhaust manifold for my Chevy 350. The exhaust manifold is a critical component in ensuring optimal performance and efficiency of your boat’s engine. With so many options available in the market, it can be overwhelming to choose the right one. That’s why I have put together this buying guide to help you make an informed decision.

1. Compatibility

Before purchasing a marine exhaust manifold for your Chevy 350, it is crucial to ensure compatibility. Not all exhaust manifolds are designed to fit every engine model. Therefore, make sure to check the compatibility of the manifold with your specific Chevy 350 engine. You can find this information in the product description or by consulting with a mechanic.

2. Material

Marine exhaust manifolds are available in different materials such as cast iron, stainless steel, and aluminum. Each material has its own advantages and disadvantages. Cast iron is durable but can be heavy and prone to corrosion if not properly maintained. Stainless steel is more resistant to corrosion but comes at a higher price point. Aluminum is lightweight but may not be as durable as cast iron or stainless steel.

3. Water Jacketed vs Non-Water Jacketed

Water jacketed exhaust manifolds have cooling channels that allow water to circulate around them, reducing heat build-up and preventing damage to surrounding components. On the other hand, non-water jacketed manifolds do not have these cooling channels and rely on air cooling instead. If you frequently use your boat in saltwater or high-temperature conditions, then water jacketed manifolds would be a better option.

4.Price

The price of marine exhaust manifolds can vary greatly depending on the brand, material, and features offered. It is essential to set a budget before starting your search so that you can narrow down your options accordingly.

5.Warranty and Customer Reviews

Always look for products that come with a warranty as it gives you peace of mind knowing that you are covered in case of any defects or issues with the product. Additionally, reading customer reviews can give you valuable insights into the performance and durability of different marine exhaust manifolds.

6.Consult with Experts

If you are unsure about which marine exhaust manifold would be best for your Chevy 350 engine, don’t hesitate to consult with experts such as mechanics or experienced boat owners. They can provide valuable advice based on their experience and knowledge.

In conclusion, investing in a high-quality marine exhaust manifold for your Chevy 350 engine is crucial for optimum performance and longevity of your boat’s engine. By considering factors such as compatibility, material, water jacketing, price, warranty, and seeking expert advice if needed, you can make an informed decision when purchasing a marine exhaust manifold.

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Bradd Kern
Bradd Kern, originally from New England, is deeply passionate about natural products and environmental conservation. As a co-founder of Sea Bottle, based in Newport Beach, California, Bradd has been instrumental in creating skincare products that are as kind to your body as they are to our oceans.

Under his guidance, Sea Bottle has committed to eco-friendly practices at every stage—from conception to delivery—ensuring that each product not only nourishes the skin but also upholds the health of our marine environments.

Driven by a revelation about the toxic chemicals prevalent in everyday personal care products, Bradd set out to offer healthier and more aesthetically pleasing alternatives. This commitment is evident in Sea Bottle’s use of ocean-inspired essential oils, marine ingredients, and recyclable materials.

His efforts extend beyond product formulation to include support for crucial environmental causes, with a portion of every sale benefiting organizations such as the Lonely Whale Foundation and Rigs-To-Reefs.