Question: When Did Chevy Stop Using Distributors?

What’s better HEI or points?

A coil from an HEI will have a higher output voltage than a normal point ignition coil, due to the number of turns on the secondary side of the coil..

Do modern engines have distributors?

Modern engine designs have abandoned the high-voltage distributor and coil, instead performing the distribution function in the primary circuit electronically and applying the primary (low-voltage) pulse to individual coils for each spark plug, or one coil for each pair of companion cylinders in an engine (two coils …

Is a HEI distributor 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 does HEI stand for on a distributor?

High energy ignitionHigh energy ignition, also known as H.E.I., is an electronic ignition system designed by the Delco-Remy Division of General Motors, and introduced on some GM vehicles in 1974, including the Camaro Z28 Special High Performance (with 3123 units factory installed) and 1974 Buick Century Gran Sport Stage 1 (distributor …

Do newer cars have a distributor?

Many modern cars have no distributor at all. The ignition is triggered by toothed timing wheels spinning with the crankshaft, which is much more accurate than points. Then there are individual coils for each cylinder, fired by the engine management computer. Some engines share coils between two cylinders.

Can a bad distributor cause loss of power?

Bad spark plugs, fouled-up plug wires or a cracked distributor cap can cause spark loss, while compression loss — in which too much of the air-fuel mixture flees a cylinder before going bang — commonly arises from a leaky exhaust valve or a blown head gasket [sources: B&B; O’Reilly].

What happens if ignition timing is too advanced?

If ignition timing is too far advanced, it will cause the fuel-and-air mixture to ignite too early in the combustion cycle. This can cause the amount of heat generated by the combustion process to increase and lead to overheating of the engine.

What are the symptoms of a bad distributor?

Usually a faulty distributor rotor and cap will produce a few symptoms that alert the driver that service may be required.Engine misfires. Engine misfires can occur for a number of reasons. … Car doesn’t start. … Check Engine Light comes on. … Excessive or unusual engine noises.

What is the best HEI distributor?

Best HEI Distributor For 350 Chevy in 2020 [Buying Guide]10 Best HEI Distributor For 350 Chevy: Find Your Ultimate HEI Bias. … AcPulse Performance Chevy/gm HEI Distributor – Best HEI Distributor for Lifelong Performance. … MOSTPLUS Racing HEI Distributor – Best Racing HEI Distributor for Affordable Price.More items…•

When did cars stop using distributors?

2008There are small engines still made with distributors. Not in cars in the USA, but still. For the most part, distributors were phased out by 2008.

Are distributor caps still used?

Cars today don’t have distributors or distributor caps. Okay, some do. … Or if they do, there are stubby little plug wires that lead not from the distributor (which isn’t there anyway) to the plugs, but only from one plug to another plug.

What year did GM use the HEI distributor?

The HEI system was introduced in late 1974 on some GM cars, and was used across the entire GM product line in 1975. This new ignition had a significantly higher output and longer spark duration, assisting GM meet the ever tightening emission standards.

What is the difference between a distributor and a distributorless ignition system?

Essentially, a Distributorless Ignition System is an ignition system without a distributor. Eliminating the distributor improved reliability by reducing the number of mechanical components. … Distributorless Ignition systems are usually defined as having one ignition coil with two spark plug wires for two cylinders.

What is the best timing for a Chevy 350?

The timing can vary between 2 and 12 degrees BTDC, the recommended spark plugs are different and even the plug gaps vary. In most cases starting out with 12 degrees of initial advance is about right.