Chevy 305 Performance Upgrades

Chevy 305 Performance Upgrades (And Best Aftermarket Parts)

If you’re looking for Chevy 305 performance upgrades, you’ve come to the right place. Having worked in the field for so long, we have a wealth of experience and information to draw upon.

We compiled top-tier upgrades to boost your car’s power. Spoiler alert: #1 on the list of Chevy 305 performance parts gives out maximum engine output. While #3 helps boost the idling function of your vehicle.

This article is packed with all the info you need. Soon, you’ll transform your Chevy 305 into a screaming beast!

Easy Bolt-Ons For Your Chevy 305 Performance Upgrades

If you wish to make your 305 Chevy much more powerful than it has ever been, you need to consider getting Bolt-Ons for your Chevy 305 performance upgrades.

As car manufacturers are posed with the challenge of how to save and minimize cost in the production of the vehicle, they can resort to using cheaper materials that may be of lower quality. Thus, the low-quality parts limit the power production potential of your Chevy 305.

Swapping these parts with ones of higher quality can go a long way in helping you with your Chevy 305 performance upgrade in terms of power production. These parts include;

1. The Exhaust

As most Chevy 305 vehicles are built with exhausts of a lower capacity, changing the factory exhaust of the Chevy 305 vehicle is an effective method for Chevy 305 upgrades.

You may also like this guide on Common Problems with Chevy 305 & How to Fix Them.

2. Catalytic Converter

Similar to the exhaust upgrade, a catalytic converter upgrade will also help in improving the power and overall performance of the Chevy 305. Greater results will even be achieved if the catalytic converter upgrade is combined with an exhaust upgrade.

3. Throttle Body Fuel Injection System

The throttle body fuel injection system is one modern innovation you should consider in the process of performing Chevy 305 performance upgrades.

Likewise, stepping up the carburetor and intake combinations will help a lot in enhancing the throttle response mechanism. It will be more effective when done in collaboration with an exhaust upgrade.

4. The Camshaft

You can do a camshaft swap together with the modification of the induction and exhaust. This will provide immense help with getting the best performance output from your Chevy 305.

5. Cylinder Head

Swapping the cylinder head is another effective thing to do while performing Chevy 305 performance upgrades. The combination of a cylinder head swap and a camshaft swap causes the Chevy 305 to perform better in the delivery of low-rpm torques.

6. Spark Plugs

Upgrading the spark plugs might not produce a mind-blowing improvement in horsepower production. But, it is still helpful in improving the performance of the vehicle’s ignition system.

Also, consider upgrading the HEI distributor while performing your Chevy 305 performance upgrades.

Having mentioned the main performance parts required for Chevy performance upgrade, here is a list of some Chevy 305 performance parts;

  1. Catalytic converter; BoardRoad catalytic converter stainless steel high flow.
  2. Carburetor; Thundermingo 4-barrel carburetor.
  3. Camshaft; Camshaft and lifters kit.
  4. Spark plug wires; A-Team performance silicone spark plug wires set.
  5. Intake manifold; Edelbrock 2701 performer intake manifold.

Chevy 305 Performance Parts

These are the top Chevy 305 Performance Parts:

1. BoardRoad Stainless Steel Catalytic Converter (EPA Certified)

Chevy 305 Performance Upgrades
  • High resistance to heat.
  • Maximum efficiency.
  • Improves the overall performance of the engine.

The catalytic converter features a ceramic hollow interior that has an enhanced resistance to heat. It is also manufactured with a high-flow design. This enables the catalytic converter to give out maximum engine output. It also improves the catalytic effect.

Thereby enabling it to supply a greater amount of oxygen to the Chevy 305. Additionally, it improves the overall power production and performance of the Chevy 305.

These features make the BoardRoad catalytic converter worthy of consideration for a Chevy 305 performance upgrade.

2. Thundermingo 4-Barrel Carburetor

Chevy 305 Performance Parts Carburetor
  • Versatile principles of operation.
  • Enhances throttle response.
  • Manufactured to suit engines of various sizes.

The Thundermingo 4-barrel carburetor is manufactured with a down-draft design. This makes its operating principles quite versatile, as it is compatible with engines of sizes varying from small to large.

The carburetor is perfect for your Chevy 305 performance upgrades. It enhances the throttle response and the general performance of the 305 Chevy across the RPM range.

3. Camshaft And Lifters Kit

Chevy 305 Performance Parts Camshaft and lifters kit
  • Improves engine power.
  • Improves low-middle RPM torque.
  • Enhances the idling of the vehicle.

This camshaft and lifters kit is a product of the Falcon Performance brand. The camshaft and lifters kit is designed to enhance the low-middle RPM torque and mid-range power of the Chevy 305. It also boosts the idling function of the vehicle.

With these amazing features, you can imagine how this performance part will be of great importance for Chevy 305 performance upgrades.

4. A-Team Performance Silicone Spark Plug Wires Set

Chevy 305 Performance Parts silicone spark plug wires
  • Durable
  • Withstands wear and tear.
  • Designed for use with HEI distributors.

This set of spark plug wires is a product of the A-Team Performance brand. The spark plug wire set has a design that features a black 90-degree straight boot for HEI distributors. It also has a black 90-degree boot for spark plugs. Additionally, it features a coil-in cap HEI design system.

From the design features listed earlier, it is easy to guess the fact that this set of spark plug wires is designed for use with HEI distributors. For this reason, it does not have a coil wire. The coil wire is sold separately.

Other benefits of this Chevy 305 performance part include its durability. Thus, it can withstand wear and tear for years.

5. Edelbrock 2701 Performer Intake Manifold

Chevy 305 Performance Parts intake manifold
  • Made of aluminum.
  • Boosts engine power.
  • Improves torque.
  • Provides horsepower gain.

As we all know, this performer intake manifold is a product of the Edelbrock brand. The intake manifold is manufactured with aluminum and has a natural finish.

The Edelbrock 2701 performer intake manifold gives the Chevy 305 a huge boost in both power and torque at all RPMs. When used with performer series square-bore carburetors or Thunder series AVS carburetors, the Edelbrock 2701 performer intake manifold can provide horsepower gains from idle to 5500 RPM.

You should consider this performance part for your Chevy 305 performance upgrade.

How Much Would 305 Engine Performance Parts Cost?

A 305 engine performance parts will cost about $1000.

This is the exact breakdown of the 305 Engine Performance Parts Costs:

1. Catalytic converter: BoardRoad stainless steel catalytic converter

2. Carburetor: Thundermingo 4-barrel carburetor

3. Camshaft: Camshaft and lifters kit

4. Spark plug wires: A-Team performance silicone spark plug wires set

5. Intake manifold: Edelbrock 2701 performer intake manifold


You can easily get more power out of your Chevy 305 through Chevy 305 performance upgrades. With the right Chevy 305 performance parts, you can produce tremendous results that are quite shocking.

The Chevy 305 upgrade doesn’t have to cost you a fortune before it becomes effective. You can start with the cheaper upgrades. Then gradually advance to the more expensive ones. And with time, you will be over with it.

Trust me; you won’t regret giving Chevy 305 performance upgrade a trial. The results can be astonishing.

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