Are HEI distributors better?

Are HEI distributors better?

An HEI distributor is a great piece of equipment for an over-the-road car because it is completely self-contained. But without an external coil, a stock HEI cannot provide a strong spark at rpm levels commonly seen on the racetrack. Engines with higher compression or more horsepower also require a hotter spark.

What are the advantages of an HEI distributor?

High Energy (Electronic) Ignition System This transistor is the primary advantage of an HEI system because it generates a consistent, high voltage spark throughout the life of the engine, meaning fewer misfires and longer spark plug life at around 25,000 miles.

Is HEI ignition better?

“We recommend converting to an electronic ignition on a musclecar engine over a point-type ignition system for several reasons. Also, HEIs allow full alternator voltage to go through the ignition system, which with our 50,000-volt coil allows larger plug gaps for better combustion and more power.

Are DUI Distributors good?

On the road, light throttle acceleration was smooth and powerful, and the fresh 350 pulled happily toward 5,000 rpm. Since it fits and functions like a GM HEI, the DUI line from Performance Distributors is certainly an excellent alternative that delivers long-lasting performance right out of the box.

Can a HEI distributor go bad?

Do HEI distributors go bad? 99 percent of the time, in the large, coil in cap HEI’s, it ISN’T the module “just going bad”, or even “getting weak”. The real problem is the coil degrading gradually, failure process called “layer shorting”, which rarely causes the module to go way gradually.

What year did GM switch to HEI distributor?

GM’s High energy ignition (HEI), designed and built by the Delco-Remy division of General Motors starting in 1974. These units were used on all engines in 1975 through the mid-1980s, with several different variations over the years.

What should I look for in a HEI distributor?

Here’s what you should look for when selecting the best HEI Distributor for 350 Chevy: One of the primary functions of HEI distributors is to advance vehicle ignition timing. This is done to ensure that the air-fuel mixture ignites at just the right time for best engine efficiency and performance.

What’s the difference between a Hei and a dual power distributor?

While the HEI cap houses the coil, the Smaller Dual-Power distributor utilizes an external coil. The smaller-cap distributor is capable of supplying excellent spark while retaining a stock-ish appearance. Because its reliability and the high-energy spark it delivered, it was — and still is — a staple-upgrade among many enthusiasts.

Which is the best HEI distributor for a 350 Chevy?

ACDelco 93440806 HEI Distributor For 350 Chevy – Best GM Original Distributor Review This GM original HEI distributor is a great option for a 350 Chevy. Made from a trusted and reliable brand, you can be sure to get the best fit and performance that you’ve been looking for.

What does Hei stand for in GM ignition?

HEI stands for high energy ignition, or in other words, an electric ignition. When talking about an HEI distributor, we are referring to the GM 1974 to 1980 distributor cap design. How do I know when my HEI distributor is going bad and needs to be replaced? There are a number of signs that point to an HEI distributor going bad.