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The Chevy 350 small block is a versatile platform. While you won't make a crazy amount of horsepower out of the gate, it's an easy engine to work on, and the aftermarket support for this platform is massive. Plus, once you start upgrading the engine with new parts, like a new distributor, you can reach this engine’s true potential and add 100, 200, and even more than a combined 300 horsepower to your Chevy 350 small block engine.
You must have the foundation to make immense power with your engine, so don't overlook the little things. Distributors are small components that distribute electricity from the ignition coil to the spark plugs at the correct time. While it's a small part, it plays a colossal role in engine performance because your engine won't run properly or even start at all. Furthermore, upgrading your distributor or altering the timing can help you improve your engine’s performance beyond its stock capabilities and prepare it for additional modifications.
While this may sound like a lot, we’re here to help you find everything you need to know about these distributors below. Let's get into it.
The Best Aftermarket Distributors For A Small Block 350
The best aftermarket distributors for a small block 350 are typically HEI distributors. However, other distributors can also work. Ultimately, the best aftermarket distributor for a Chevy 350 small block depends on your specific application. You'll want to consider the timing you need to achieve, if you want an internal or external coil, and how much power you plan on making.
One of our favorite aftermarket distributors is the JEGS SSR-II Pro Series Distributor. You’ll love that it can maintain proper timing at upwards of 10,000 RPMs without giving you problems. For Chevy enthusiasts who want to squeeze every ounce of power out of their engine, dropping this distributor in can make a huge difference, especially in conjunction with other parts. We also like the JEGS HEI Distributor for Small Block and Big Block Chevy. While it's more basic than the Pro Series distributor, it's the perfect replacement for a complete rebuild or an original-style replacement.
If any of these distributors interest you, don't worry. We’ll have more information about them below. Plus, JEGS carries both of them along with our extended protection plan options.
How To Get More Horsepower With Your Small Block Chevy 350 Distributor
Increasing horsepower with a distributor alone is possible, but expect minimal gains unless you upgrade the surrounding engine systems. Your best bet is to purchase an upgraded aftermarket distributor to get more horsepower. You can also change the timing of the distributor to improve power.
Some distributors may also help you achieve precise timing at higher RPMs, which can help you gain better top-end power for racing applications. Still, upgrading other components alongside the distributor is a good idea if you want to get more horsepower out of your Chevy 350 small block.
How Much Horsepower Can You Add From An Engine Distributor?
Adding a distributor can help you improve your 350 small block’s power. If everything is tuned correctly, you can expect to gain up to 10 horsepower with a new distributor. Some high-performance options may help you squeeze even more power out of your engine, but significant horsepower gains are rarely attributed to the distributor alone. However, a faulty distributor or the wrong timing can tank your performance. If your engine feels sluggish, it's not a bad idea to check the distributor for problems.
While this is about as far as you can go with the distributor, you can upgrade the carburetor, install new spark plugs, change to aluminum cylinder heads, and install a dual-plane intake manifold. Our in-depth guide for upgrading your Chevy 350 explains how to add up to 300 extra horsepower.
Small Block Chevy 350 Engine Distributor Specs
The specifications for a Chevy 350 engine distributor will vary based on the part and timing you’re looking to use. Aftermarket parts may have different specifications than OEM distributors to achieve the desired timing and power result. That said, some common specifications to consider include:
- An average base timing of 12-18 degrees before the top-dead-center, this is achieved by rotating the distributor while the engine is at idle speed, using a timing light. Total advance for a small block Chevy usually is 34-36 degrees BTDC (confirm this is correct for your application).
- Aluminum housing (typically found on aftermarket high performance distributors
- 45,000 - 65,000-volt coil (depending on the distributor kit or ignition system you have. Don't forget to upgrade your spark plug wires to a larger diameter to deliver the increased voltage to the spark plugs.
- HEI-style cap
- Ignition box may or may not be necessary, depending on the distributor, be sure to confirm requirements.
- Magnetic trigger
- Vacuum (for most street vehicles) and mechanical advance
These specifications vary based on the part, but most options will fall within a similar range.
Best Distributors For Chevy 350
Chevy 350 small block distributors vary in quality, especially if looking for aftermarket options. While most distributors have similar specs, you'll find that some distributors are made better than others. Performance distributors may be better suited for specific applications if you plan on adjusting the timing. Learn about our top picks for the Chevy 350 small block below.
JEGS HEI Distributor For Small Block And Big Block Chevy
The JEGS HEI Distributor for Small Block and Big Block Chevy is the best choice when you need a new distributor for your Chevy small block 350 engine. It comes with everything you need for an easy installation and drops right into place with a simple 1-wire hook-up. The JEGS HEI Distributor for Small Block and Big Block Chevy distributor is also durable, well-made, and will last you for years. It's built with a CNC aluminum body and a high-voltage coil that can handle more shock without any problems. Coated weights are also included for corrosion resistance.
JEGS SSR-II Pro Series Distributor, With Adjustable Slip Collar For Chevy Small Block And Big Block V8 Engines
When you want a distributor that will improve your performance, you can't go wrong with JEGS SSR-II Pro Series Distributors. These distributors are made for seamless integration with CD ignition boxes and are engineered from CNC-machined forged aluminum. This makes them one of the more durable housings on the market, and they shouldn't have any problems standing the test of time.
Furthermore, the high-quality distributor cap and rotor feature terminals use premium brass for optimal conductivity at any voltage you need. This premium construction makes it one of the best high-performance distributors on the market. You can enjoy precise timing up to 10,000 RPMs, which is more than enough for your Chevy 350 small block. Plus, you can leverage the advanced curve kit to take full advantage of enhanced timing.
Speedmaster 8000-Series Pro-Billet Distributor Small Block Chevy 350/Big Block Chevy 454 [Red Cap]
The Speedmaster 8000-Series Pro-Billet Distributor Small Block Chevy 350/Big Block Chevy 454 is a great choice and is designed for car enthusiasts. If you have a lot of mods on the engine, enough where any extra space is helpful, this distributor is perfect for you. While it can help you save on space, it's well-made and precision-machined with billet 6061–T6 aluminum built to last, so you don't have to compromise on the quality.
The ½” steel shaft is also guided by a long sintered bushing and a sealed ball bearing to locate the reluctor precisely. This combination aims to help you achieve stable timing and spark delivery at any RPM that your Chevy 350 small block can handle. There is also a Speedmaster 6000-Series HEI Distributor if that's more your speed.
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