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![66941R Street/Strip HEI Distributor & 50,000 Coil for Small Block & Big Block Chevy [Red Cap]](https://www.jegs.com/images/mini_750/700/778/778-66941r.jpg)
Vehicle Info NeededPROFORMPART NUMBER: 778-66941R
66941R Street/Strip HEI Distributor & 50,000 Coil for Small Block & Big Block Chevy [Red Cap]
$10099
2 left in stock
Ships on Nov 09, 2026
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GM
Street/Strip HEI DistributorSmall Block & Big Block Chevy 50,000 Volt Coil Red Cap
The same reliable components as the 778-66940 except with a 50,000 Volt Coil
Produces 50000 Volt Spark Through 7500 RPM
High-Performance Curve
Premium Cap w/Brass Terminals
Low-Saturation Ignition Module
Die-Cast Polished Aluminum Housing Proform 66941R - FAQs
Proform 66941R Features:
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Get the Best Value with an HEI Distributor Upgrade
Replace your stock distributor with a Proform HEI Distributor for an easy-to-install performance upgrade. You can trust Proform high-energy ignition (HEI) components to keep your engine running at peak performance.
Part TypeDistributor
Product LineProform High-Performance HEI Distributors & Accessories
BrandPROFORM
Package Height6.8
Package Width8.1
Package Length17.1
Weight6.85 PG
Part CategoryPerformance Parts
Marine UseNo
Housing FinishNatural
Housing MaterialCast aluminum
Distributor Cap ColorRed
Ignition Box RequiredNo
QuantitySold individually
Distributor TypeHEI/Breakerless
Engine Make/SizeChevy Small And Big Block
Computer-Controlled CompatibleNo
Trigger StyleMagnetic
Distributor Gear RotationStandard
Cap StyleMale/HEI
Part FitmentSemi Universal
Slip CollarNo
Mechanical Tach DriveNo
Gear MaterialIron
Advance TypeVacuum and Mechanical
Vendor Part Number66941R
Package Qty1
Package TypeEA
No Questions
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EASY KITS
Some parts are not legal for use in California or other states with similar laws / regulations
