Ever heard that rumble from a classic muscle car and wondered what makes it roar? For many, that iconic sound comes from a legendary engine: the Chevrolet 350 small block. But unlocking its true potential, that deep, throaty growl and powerful acceleration, often comes down to one crucial part – the camshaft.
Choosing the right camshaft for your 350 small block can feel like navigating a maze. There are so many choices, each promising more power, better sound, or improved fuel economy. But how do you know which one is truly right for your car and your driving style? It can be confusing, and picking the wrong one can lead to disappointing performance or even damage to your engine.
This post is here to clear the air and guide you through the exciting world of 350 small block camshafts. We’ll break down what a camshaft actually does, explain the different types available, and help you understand how to match a cam to your specific needs. By the end, you’ll have the knowledge to confidently select a cam that will transform your 350 into the powerhouse you’ve always dreamed of. Let’s dive in and unleash that V8 power!
Our Top 5 Cam For 350 Small Block Recommendations at a Glance
Top 5 Cam For 350 Small Block Detailed Reviews
1. COMP Cams CL12-602-4 Big Mutha’ Thumpr 243/257 Hydraulic Flat Cam/Lifter Kit Chevrolet Small Block
Rating: 9.2/10
Unleash the beast in your Chevrolet small block with the COMP Cams CL12-602-4 Big Mutha’ Thumpr Cam/Lifter Kit. This kit is designed to give your engine a serious power upgrade and a signature aggressive exhaust note that will turn heads. It’s built for performance enthusiasts who want to feel the raw power of their classic muscle car or street rod.
What We Like:
- Delivers excellent horsepower gains and a broad torque curve for thrilling acceleration.
- Produces a very rough idle and a powerful, hard-hitting exhaust note, giving your ride an aggressive sound.
- Optimized for street and strip use, making it a versatile choice for performance driving.
- Includes everything you need: camshaft, lifters, instructions, and assembly lubricant for a complete package.
- Made in the USA, ensuring quality craftsmanship.
What Could Be Improved:
- Requires a minimum of 9.5:1 compression, a 2800+ stall torque converter, intake, gears, and headers to perform at its best.
- The very rough idle might not be suitable for everyone’s preference or daily driving needs.
- Does not fit LT1/LT4 or factory roller small blocks from 1985 and newer, limiting compatibility.
If you crave more power and a distinctive, aggressive sound for your classic Chevy small block, this Big Mutha’ Thumpr kit is a fantastic upgrade. It’s engineered to push your engine’s limits and provide an unforgettable driving experience.
2. Genuine COMP CAM 12-602-4 Big Mutha Thumpr 243/257 Camshaft & Enginetech High-Performance Lifters
Rating: 9.2/10
Get ready to unleash the beast in your Chevrolet SBC engine with this powerful combo! This kit features the legendary COMP CAM 12-602-4 Big Mutha Thumpr camshaft, known for its aggressive profile and impressive performance gains. It’s paired with Enginetech high-performance hydraulic lifters, ensuring your engine runs smoothly and reliably. This bundle is expertly assembled by engineers, offering top-notch quality and performance without breaking the bank. It’s designed to fit Chevrolet SBC engines from 283 to 400 cubic inches, including the popular 5.7L (350). If you’re looking for a serious upgrade for your street or strip car, this kit is a fantastic option.
What We Like:
- The “Big Mutha Thumpr” name says it all – expect a serious rumble and power increase!
- This is an authentic COMP CAM, a trusted name in performance parts.
- It comes with high-performance Enginetech lifters, ensuring a complete and quality upgrade.
- The kit is put together by expert engineers for optimal performance and affordability.
- It’s designed for a wide range of popular Chevrolet SBC engines.
What Could Be Improved:
- This camshaft has a very rough idle, so it’s best suited for those who want an aggressive sound and don’t mind a bit of choppiness.
- You’ll need specific supporting modifications like 9.5:1 compression, a 2800+ stall torque converter, intake gears, and headers to get the most out of this cam.
This kit is a killer upgrade for anyone serious about performance. It delivers a raw, powerful sound and significant power gains for your Chevrolet SBC.
3. Small-Block Chevrolet: Stock and High-Performance Rebuilds (Workbench How-to)
Rating: 9.0/10
Ever wanted to dive into the heart of a classic American V8? The “Small-Block Chevrolet: Stock and High-Performance Rebuilds (Workbench How-to)” book is your ultimate guide. This book teaches you everything you need to know about rebuilding these legendary engines, whether you’re aiming for smooth cruising or roaring performance. It breaks down complex steps into easy-to-understand instructions, making it a fantastic resource for beginners and experienced mechanics alike. You’ll learn about different parts, how they work together, and the best ways to put them back together for optimal results. Get ready to get your hands dirty and bring a classic Chevy engine back to life!
What We Like:
- Clear, step-by-step instructions make rebuilding easy.
- Covers both stock and performance rebuilds, offering great versatility.
- Lots of helpful diagrams and photos to guide you.
- Teaches you how to troubleshoot common problems.
- It’s a great way to learn about the powerful Small-Block Chevy engine.
What Could Be Improved:
- Some advanced tuning techniques could be explained in more detail.
- A glossary of technical terms would be helpful for absolute beginners.
This book is an essential tool for anyone passionate about Small-Block Chevys. It empowers you to tackle rebuilds with confidence and achieve impressive results.
4. Genuine COMP CAM 12-602-4 Big Mutha Thumpr 243/257 Camshaft
Rating: 9.3/10
Ready to unleash some serious power from your Chevrolet Small Block engine? This Genuine COMP CAM 12-602-4 Big Mutha Thumpr 243/257 Camshaft kit is your ticket to a much more aggressive and powerful ride. It’s a complete package, expertly assembled by engineers to give you top-notch performance without breaking the bank. This bundle includes everything you need to get your engine roaring, all with high-performance parts guaranteed for quality and power.
What We Like:
- The “Big Mutha Thumpr” camshaft itself delivers a wild, rough idle and serious performance gains for street or strip use.
- You get a complete kit with high-performance hydraulic lifters, a durable double-roller timing set, and the correct pushrods for a seamless installation.
- This bundle combines genuine COMP CAM quality with affordable Enginetech components, offering great value.
- It’s designed for a wide range of popular Chevrolet Small Block engines like the 283, 327, 350, and 400.
What Could Be Improved:
- The “very rough idle” is a characteristic of this aggressive cam, so it might not be ideal for those seeking a smooth, quiet engine.
- You’ll need to ensure your engine has at least 9.5:1 compression and plan for a 2800+ RPM stall torque converter, along with intake gears and headers, to get the most out of this cam.
If you’re looking for a dramatic increase in your Chevy’s performance and don’t mind a loud, aggressive idle, this kit is a fantastic choice for your project.
5. COMP Cams SK12-268-4 XE Computer Controlled 224/230 Hydraulic Flat Cam SK-Kit Chevrolet Small Block
Rating: 8.8/10
If you’re looking to wake up your classic Chevrolet small block engine, the COMP Cams SK12-268-4 XE Computer Controlled 224/230 Hydraulic Flat Cam SK-Kit is a fantastic upgrade. This kit is designed to give you a noticeable boost in performance, especially in modified 350 TPI engines that already have upgrades like a better chip, injectors, plenum, runners, and exhaust. It’s built for a strong operating range from 1,800 to 5,800 RPM, meaning it will perform well for daily driving and spirited runs.
What We Like:
- It’s the best cam for modified 350 TPI engines with other performance parts.
- The 224/230 duration at .050″ and 114-degree lobe separation angle give a great power band.
- It offers excellent performance in street carbureted applications.
- Quicker opening lobes mean faster engine response and more power.
- It pairs perfectly with aftermarket intake manifolds, headers, and lower gear ratios for maximum gains.
- The SK Kit includes everything you need: camshaft, lifters, assembly lube, timing set, and instructions.
- It fits many classic Chevrolet small blocks, from 262 to 400 cubic inches.
- This cam is proudly Made in the USA.
What Could Be Improved:
- This kit does not fit LT1/LT4 engines or factory roller small blocks from 1985 and newer.
This COMP Cams kit is a solid choice for anyone wanting to unlock more power from their older Chevy V8. It delivers noticeable improvements in responsiveness and overall performance.
Choosing the Right Cam for Your 350 Small Block
A camshaft is like the heart of your engine. It tells your engine when to breathe in and out. For a 350 small block Chevy, the right cam can make a big difference in how your car performs. This guide will help you pick the best one.
Key Features to Look For
When you shop for a cam, you’ll see some important numbers and terms.
1. Cam Lift
Lift is how high the valve opens. More lift usually means more air and fuel can get into the engine. This can give you more power.
2. Cam Duration
Duration is how long the valve stays open. Longer duration means the engine can breathe for a longer time. This is good for high-speed power.
3. Lobe Separation Angle (LSA)
LSA is the angle between the intake and exhaust lobes. A smaller LSA can make the engine sound rougher, like a race car. A bigger LSA makes it run smoother.
4. Cam Profile
This is how the lobe is shaped. Aggressive profiles are for racing. Mild profiles are for everyday driving.
Important Materials
Cams are usually made from two main materials.
1. Cast Iron
Cast iron cams are strong and last a long time. They are also cheaper. They are good for most street cars.
2. Billett Steel
Billett steel cams are even stronger. They are made from a solid piece of steel. They are best for high-performance engines that work very hard.
Factors That Improve or Reduce Quality
Some things make a cam better or worse.
1. Brand Reputation
Well-known brands often make better cams. They have experience and test their products.
2. Manufacturing Precision
How accurately the cam is made matters. Good cams have smooth lobes and precise measurements. This helps them work better and last longer.
3. Heat Treatment
Cams need to be heat-treated to be hard and durable. This stops them from wearing out too fast.
User Experience and Use Cases
Think about how you will use your car.
1. Daily Driver
If you use your car every day, you want a mild cam. It will give you good power without making the engine hard to handle. It will also be fuel-efficient.
2. Street/Strip Car
If you like to go to the drag strip sometimes, you might want a slightly more aggressive cam. It will give you more power for racing but still be okay for driving around town.
3. Race Car
For a dedicated race car, you can choose a very aggressive cam. These cams make a lot of power at high speeds. They might make the car rough to drive on the street.
Frequently Asked Questions (FAQ)
Q: What is the best cam for a stock 350 small block?
A: For a stock engine, a mild hydraulic flat tappet cam is usually the best. It will improve performance without needing other engine upgrades.
Q: Do I need to change my springs if I change the cam?
A: Yes, it’s usually a good idea to upgrade your valve springs. A new cam might need stronger springs to work correctly and avoid problems.
Q: Will a new cam affect my gas mileage?
A: Yes, more aggressive cams can reduce gas mileage. Milder cams will have less of an impact.
Q: What is a roller cam, and is it better?
A: A roller cam uses roller bearings on the lobes. This reduces friction and wear. Roller cams can often give more power and last longer, but they are more expensive.
Q: How do I know if my cam is worn out?
A: Signs of a worn cam include a rough idle, loss of power, and strange engine noises.
Q: Can I install a cam myself?
A: Installing a cam can be done by a DIY mechanic with the right tools and knowledge. However, it is a complex job. If you are not comfortable, it’s best to have a professional do it.
Q: What is “cam overlap”?
A: Overlap is when the intake and exhaust valves are open at the same time. More overlap can mean more power but a rougher idle.
Q: Do I need a new distributor with a new cam?
A: Usually, you don’t need a new distributor. However, you might need to adjust your timing after installing a new cam.
Q: What is the break-in procedure for a new cam?
A: It’s very important to follow the break-in procedure for a new flat tappet cam. This usually involves running the engine at a specific RPM for a set time to properly seat the cam and lifters.
Q: How does the rear gear ratio affect cam choice?
A: Your rear gear ratio works with your cam. If you have taller gears (lower number), you might want a cam with more low-end power. If you have shorter gears (higher number), a cam with more top-end power will work well.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.
Hi, I’m Hector Quintanilla, the creator of helmetslab.com.. As a passionate enthusiast and experienced expert in helmets, I’ve dedicated this platform to sharing my insights, knowledge, and hands-on experiences. Whether you’re seeking the best helmet for safety, comfort, or performance, my goal is to guide you with detailed reviews, tips, and advice. Ride safe, and let’s explore the world of helmets together!