MAS HEI Ignition Distributor Kit for Chevy V8 — Red Cap 65kV Coil, Direct-Fit with Wires

This all-in-one kit from MAS replaces the distributor, cap, rotor and coil while including a pigtail harness and spark plug wires so you get a ready-to-install HEI solution. Built for Chevrolet small-block and big-block V8s (including popular 302, 350, 400 and 454 applications), the unit uses a coil-in-cap HEI design with a distinctive red cap and a heavy-duty 90° spark plug boot for tight engine bays.

Will this distributor fit my Chevy V8 and what engines are supported?

The MAS Racing HEI kit is engineered to be compatible with many GM engines and meets OEM form, fit and function standards. It fits a wide range of SBC and BBC Chevrolet engines and comes with the correct HEI mounting and electrical provisions for plug-and-play replacement.

• Compatible with small blocks: 283, 305, 307, 327, 350, 400.
• Compatible with big blocks: 396, 427, 454 and other similar GM V8s.
• Works with engine displacements listed (302, 350, 400, 454, etc.) and many 4.6L–7.4L conversions when HEI is used.

How does the ignition performance compare to the original part?

MAS supplies a 65,000‑volt super coil integrated into the HEI cap, delivering strong spark energy suitable for high-compression and modified engines. The system is rated for high RPM operation (up to about 7,500 RPM) and uses quality materials to maintain consistent timing and spark under load.

• 65kV coil-in-cap HEI design for stronger spark output.
• Durable 20CR steel gear for improved wear resistance.
• Rated for high-RPM use—suitable for street and light performance applications.

What comes in the box and what installation hardware is included?

The kit ships complete so you avoid hunting for extra parts: distributor assembly with cap and rotor, coil included, a pigtail wiring harness for the distributor, and a set of spark plug wires with 90° boots. The wiring and connectors match common GM HEI systems for a straightforward swap.

• Complete distributor assembly (cap, rotor, coil-in-cap).
• Pigtail harness for quick electrical hookup.
• Spark plug wires with 90° boots for tight engine compartments.

How reliable is this distributor and what warranty applies?

MAS builds the drive gear from specially treated 20CR steel to increase hardness and wear life compared with untreated alloys. The kit is produced to meet OEM specifications and is backed by a one-year limited warranty for peace of mind.

• 20CR treated steel gear for long-lasting durability.
• OEM compatibility ensures correct fit and function.
• One-year limited warranty from MAS.

Who is this for: The MAS Racing HEI Red Cap Distributor Kit is aimed at DIY mechanics, restoration enthusiasts and performance builders replacing a worn HEI unit or upgrading to a higher-energy coil-in-cap system. It’s ideal when you want a near‑OEM fit with improved spark output for street-driven Chevys, classic C10/GMC trucks, and many small- and big-block V8 swaps that accept HEI ignition systems.