FAQ:

Does a HEI distributor need a coil?

• Yes, a Proform HEI distributor like the 66941R requires a compatible coil which is located in the top of the distributor cap. The distributor relies on the coil to generate the high voltage needed to create a spark in the engine's combustion chamber.

How does a Chevy HEI distributor work?

• The Proform HEI distributor (66941R) uses a built-in ignition coil to produce a high-voltage spark. This eliminates the need for an external coil, simplifying the ignition system and enhancing performance.

What happens when a distributor coil goes bad?

• If the coil in a Proform distributor fails, it can lead to misfires, poor fuel efficiency, and engine stalling. Regular maintenance and using quality Proform distributors help prevent coil issues for optimal performance.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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