Do high performance coils make a difference?
A high performance ignition coil helps engine performance four important ways. First, the higher voltage allows for a larger spark plug gap, which results in a more robust initial flame kernal at the start of combustion. The result is a real-world engine torque increase.
How many volts is a stock HEI coil?
An HEI should have a 10 guage wire run to it. If it’s hooked to stock wiring it may not be getting a full 12 volts. Many cars had ballast resistors or resistor wire running to the stock coil. A GM HEI should run on as low as 9 volts but 12-14.5 is required for good performance.
Do changing ignition coils make a difference?
Do ignition coils increase horsepower? If you install performance ones, they may help increase your car performance. First, a higher voltage allows you to increase the gap between the spark plugs, which leads to a stronger initial core of the flame at the beginning of combustion.
Are HEI distributors good?
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.
Do changing coil packs increase horsepower?
Although the new coil packs produced 40,000 volts under load, as opposed to 25,000 volts for the stock ones, it was always known that aftermarket ignition systems, high voltage coils, etc. did not result in horsepower gains for low rpm stock engines.
How long does a HEI coil last?
The ignition coil on your car is supposed to last around 100,000 miles or more. There are a number of factors that can lead to this part become damaged prematurely.
What does HEI stand for distributor?
High energy ignition
High energy ignition, also known as H.E.I., is an electronic ignition system designed by the Delco-Remy Division of General Motors.
Is PerTronix HEI?
The HEI III is the latest progression of the PerTronix Ignitor series technology they have been developing over the past four decades. With the HEI III, peak current level is reached just prior to spark for maximum energy without the heat build-up, increasing coil performance and module reliability.
Are MSD coils good?
5.0 out of 5 stars Great coils. Put these MSD coils in solved those problems. I will say it brought the motor back to what it was new. There is a noticeable horsepower change, I would say 5-10hp.
What’s the difference between Hei coils and modules?
While a good performance module will make a big difference in a stock HEI, matching it with a performance coil allows the system to work as efficiently as possible. In fact, all the aftermarket ignition companies sell matched coil and module sets to ensure optimal ignition operation.
Is there magic with a HEI ignition system?
There is no magic with a standard ignition system, it either produces enough spark or not. It really improve an HEI coil you need to move the coil off of the Cap and switch over to a E-Core style coil (like the MSD 8207).
Can a Hei coil be used for street use?
In my experience the stock HEI coil is just fine for street use. There is no magic with a standard ignition system, it either produces enough spark or not. It really improve an HEI coil you need to move the coil off of the Cap and switch over to a E-Core style coil (like the MSD 8207).
What makes the arc of a Hei coil?
Voltage is what it takes to strike an arc between the plug’s electrodes, but once that’s accomplished total spark energy is what KEEPS it arcing until the coil is fully discharged again and gets the A/F mix properly ignited and initiates a controlled combustion. THAT is what matters. So back to the limitations of the HEI…..