Replacing the air filter on a 1970 Plymouth Hemi 'Cuda is an essential maintenance task that ensures your high-performance engine runs efficiently and stays protected from debris. Over time, air filters can become clogged with dirt and dust, which restricts airflow and affects engine performance. You might notice a drop in horsepower, reduced fuel efficiency, or even experience the engine running roughly. To keep your classic 'Cuda in top shape, follow these steps to replace the air filter.
Step 1: Park and Prepare Your Vehicle
First, make sure your vehicle is parked on a flat, level surface and the engine is cool. Open the hood by releasing the hood latch located under the dashboard on the driver’s side. Once the hood is open, use the hood prop rod to keep it securely in place.
Step 2: Locate the Air Cleaner Assembly
In the engine bay, find the air cleaner assembly. It is a large, round metal housing sitting on top of the engine, directly over the carburetors. The air cleaner assembly typically has a chrome or black finish with the recognizable “426 Hemi” or “Hemi” insignia engraved on it.
Step 3: Remove the Wing Nut and Air Cleaner Cover
Using your hand, unscrew the wing nut located at the center of the air cleaner cover. This nut secures the cover in place. Be careful not to drop it into the engine bay. Once the wing nut is removed, lift off the air cleaner cover and set it aside. You may also need to disconnect the breather hose attached to the side of the air cleaner assembly, depending on your specific setup.
Step 4: Remove the Old Air Filter
With the cover removed, you will see the air filter element sitting inside the air cleaner base. The filter is usually a circular paper or foam element. Lift the old air filter out of the housing and dispose of it properly. Take note of any dirt or debris inside the air cleaner base and clean it with a clean, dry cloth if necessary.
Step 5: Install the New Air Filter
Take your new air filter and place it into the air cleaner base. Ensure that it fits snugly and is seated properly. The new filter should have the same dimensions and shape as the old one.
Step 6: Reattach the Air Cleaner Cover
Place the air cleaner cover back on top of the new filter. Make sure it is aligned correctly with the housing. Screw the wing nut back onto the stud in the center of the cover to secure it. If you had to disconnect any hoses before, reattach them now. Double-check that everything is firmly in place.
Step 7: Close the Hood and Finish Up
Finally, remove the hood prop rod and carefully close the hood. Start the engine to make sure everything is functioning correctly and to listen for any unusual sounds that might indicate an improperly seated air filter.
By following these steps, you can ensure that your 1970 Plymouth Hemi 'Cuda remains in excellent running condition, with a fresh air filter allowing your legendary Hemi engine to breathe properly.
Join Our Community & Get Instant Access to Expert-Verified Repair Guides
"AutoFame.com took my collection’s documentation to the next level. Before, I had scattered notes and old photos in boxes—now everything’s organized and accessible in one place. The AI-driven narratives also helped me craft a fascinating story around my ‘67 Mustang’s history that I proudly share at shows!"
"I’m not a professional mechanic, but I love working on my car. AutoFame.com’s step-by-step guides and community forums gave me the confidence to tackle issues on my own. Last month, I fixed a stubborn headlight alignment problem in minutes. It’s like having a trusted car expert on speed dial."
"AutoFame.com’s AI-driven insights blew me away. It automatically pulled up detailed specs and historical data on my BMW M3, and even composed a compelling narrative for my show board. When I shared it at a local event, everyone wanted to know how I put it together. AutoFame.com made me look like a pro!"
"I’ve been restoring my grandfather’s old Chevy pickup, and AutoFame.com has been a lifesaver. The vast data access helped me confirm original specs, and the documentation tools ensure I never lose track of my progress. My project went from chaotic guesswork to a well-organized, enjoyable journey."
"AutoFame.com isn’t just about data—it’s about community. I run a local car club, and we’ve started using their event listings and forums to keep everyone updated. Our members love how easy it is to share photos, ask questions, and discover new shows. It’s brought our club closer together and boosted our turnout!
That's just over the last decade according to the night Franks Luxury Investment Index, making it the best-performing asset class of any other type of collectible. AutoFame.com was developed to take your car collection and preservation the extra mile with a growing list of innovative features.
Utilize cutting-edge AI to discover fascinating facts about your car and compose engaging, descriptive narratives that highlight its unique story.
Access vast datasets to populate your car’s specifications, title history, and more, ensuring your records are detailed and accurate.
Document key aspects of your car’s history, maintenance, restoration, customization, and performance. Preserve every detail that makes your car special.
Store photos, videos, and records of awards or special recognition, creating a rich, visual history of your vehicle.
Join group forums and participate in event postings to connect with fellow car enthusiasts and build a supportive community.
Enjoy complete control over your privacy and sharing settings. Share your car’s legacy through a searchable gallery or on social media platforms with ease.
Our mobile-friendly platform makes it easy to document and share your car’s legacy anytime, anywhere.
Discover, preserve, and share the legacy of your precious automotive assets to increase their appeal and value.
