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1975 model year.

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Q: What year did gm start using hei distributors?
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What is hei on a 350 Chevy motor?

hei stands for high energy ignition and refers to the distributor. previous distributors used points and later distributors were controlled by the on-board computer.


What HEI Distributors will work in a 1970 firebird 350?

If it is a Pontiac 350, any hei distributor out of any size Pontiac motor up to 1979 will work.


Are hei distributors better than regular distributors?

HEI is not just the distributor, it's the entire ignition system and yes, they certainly are better. Plugs last longer, fuel burns better and there is quite a bit less maintenance. The differences are that the coil of a HEI system has to run on a solid state module which is usually mounted somewhere outside of the distributor as opposed to the older style which runs on points that are INSIDE the distributor.


What year did dodge come out with hei?

HEI was an ignition system used on Chevrolet and GM vehicles.


How do you fit HEI ignition into a 1955 Chevy Do you need to move the small block 350 engine forward or modify the firewall?

There are HEI distributors with remote coils and caps that will fit. I had to modify the fire wall in a couple similar installs, the customers did not want the engine moved.


What do you need to change from points to electronic ignition?

There would be a steel resistance wire or some sort of ballast resistor to limit incoming voltage from the key to the hot side of the coil. That would need to be eliminated when switching to HEI. Also, HEI requires minimum 8MM spark plug wires. Then just switch distributors or install the HEI module in the original distributor, and you're good to go.


What do you need to change from electronic ignition to points?

There would be a steel resistance wire or some sort of ballast resistor to limit incoming voltage from the key to the hot side of the coil. That would need to be eliminated when switching to HEI. Also, HEI requires minimum 8MM spark plug wires. Then just switch distributors or install the HEI module in the original distributor, and you're good to go.


Spark plug gap chevy 350?

The gap is different for each type of ignition system being used. The old points-type distributors worked fine with .035". HEI needed more, up to .060" depending on the year. You can usually find this info on auto parts stores websites if you know the year of your ignition system.


Can a disconnected or broken TACH wire from the HEI distributor cap cause a '79 trans am not to start?

Yes, a disconnected or broken TACH wire from the HEI distributor cap can cause a '79 trans to fail to start.


Where is number 1 on a HEI distributor cap?

What car, what year, what engine?


What is the proper spark plug gap for a 1970 Chevelle with a 350 CI engine with a 4 barrel carb and a 1975 HEI from a 1975 nova?

.045 is a good place to start with HEI.


Will the distributor plug wire set up be the same for HEI ignition and non HEI Not sure of the year Chevy 350?

The wires are different - HEI ignition wires won't work in a standard distributor - they all go in the same relative places though.