MAS HEI Ignition Distributor Kit for Chevy V8s — Red Cap, 65kV Coil, Complete Wiring

MAS Racing HEI Ignition Distributor kit is a complete OEM-compatible replacement that combines a 65,000-volt coil-in-cap distributor, cap, rotor, wiring pigtail and spark plug wires for Chevy small- and big-block V8 engines.

This distributor assembly is built to restore reliable spark delivery in classic and performance Chevrolet engines from 4.6L truck V8s to 7.4L big-blocks. The kit matches OE fit and mounting dimensions for direct swap installations, uses hardened 20CR steel gears for long life, and includes a coil-in-cap HEI design with a red cap for easy identification. It ships with the wiring pigtail and a set of spark plug wires sized for correct routing, so you get a near plug-and-play replacement for engines like the 302, 350, 400, and 454.

How does this HEI distributor improve ignition reliability?

The MAS Racing unit recreates the factory HEI coil-in-cap system, eliminating weak or corroded contacts found in worn distributors. The integrated 65kV coil and quality rotor ensure stronger spark energy and consistent timing pickup under load. Gearing and bearings are treated for durability to maintain accurate timing over many miles.

• Integrated 65,000-volt coil-in-cap HEI design for stronger spark
• 20CR treated steel gears resist wear and maintain timing
• Complete kit includes cap, rotor, coil, pigtail, and wires
• Direct-fit OEM dimensions for common Chevy SBC/BBC engines

Will this kit fit my Chevy small-block or big-block engine?

This MAS Racing distributor is designed for a broad range of GM V8s, including popular small blocks and big blocks used in passenger cars and trucks. Cross-references include OEM numbers like 1035001 HEI and PC6001A HEI, so it will fit applications calling for those references. Confirm gear type and distributor shaft drive style on your engine before purchase.

• Compatible with Chevy small blocks: 283, 305, 307, 327, 350, 400
• Compatible with Chevy big blocks: 396, 427, 454 and similar
• Fits various V8 displacements listed (4.6L–7.4L) when matched to OEM ref
• Includes plug wires and pigtail for correct routing and connections

What comes in the box and how easy is installation?

The kit ships as a complete ignition bundle: distributor assembly with red cap and rotor, a coil-in-cap, the correct pigtail wiring harness, and a set of spark plug wires. For most mechanics the distributor is a direct replacement using existing mounting and timing procedures; basic timing adjustment after installation is recommended. No extra modules or external coil are required with this coil-in-cap design.

• One complete distributor (cap, rotor, coil-in-cap included)
• One matching wiring pigtail for stock connector compatibility
• One set of spark plug wires sized for proper engine routing
• One-year limited warranty for peace of mind

How durable is the MAS Racing distributor under performance driving?

The distributor gears are manufactured from specially treated 20CR steel to resist wear under sustained operation and higher RPM use. The coil-in-cap HEI system reduces external wiring exposures and potential failure points, while the included spark plug wires use durable insulation suited for engine bay heat. While built for longevity, follow routine inspection intervals for high-performance applications.

• Hardened 20CR steel gear material for extended wear life
• Coil-in-cap reduces external coil/spark vulnerabilities
• Spark plug wires sized for heat and routing protection
• Manufactured to meet OEM standards and fitment tolerances

Who this is for: The MAS Racing HEI distributor kit is aimed at classic Chevy owners, restomod builders, and DIY mechanics who need a reliable, OEM-dimensioned replacement for small- and big-block V8s. It’s a good choice when you want a single-package swap that restores original HEI function—especially for vehicles using the referenced OEM part numbers or stock-style ignition systems. If your build requires electronic ignition conversion modules or non-standard gears, verify compatibility before ordering.