MAS Performance HEI Distributor for Chevy & GMC V8s — Red Cap, 65K Coil Compatible, Wiring Kit

MAS Performance HEI distributor with red cap and complete wiring kit is a high-torque ignition upgrade designed to replace stock distributors on many Chevrolet and GMC small- and big-block V8s.

This aftermarket HEI unit from MAS pairs a durable 20CR steel gear set, a red high-energy ignition cap, and a matched wiring harness and 65K-compatible coil connection to deliver reliable spark delivery for classic and late-model Chevy 4.3L–7.4L engines. It ships with a one-year limited replacement warranty and fits a long list of Chevy, GMC, Oldsmobile, Pontiac and Buick applications, making it a convenient drop-in option when restoring or upgrading performance vehicles.

Will this MAS HEI distributor fit my Chevy or GMC V8?

Yes — the MAS distributor is built to fit a wide range of Chevrolet and GMC engines, spanning small-blocks and big-blocks used in trucks, vans, muscle cars and many classic models. Check your engine displacement and model year against the listed fitments before ordering to ensure compatibility.

• Covers Chevy SBCs: 262, 267, 305, 307, 327, 350, 400.
• Supports Chevy BBCs: 402, 454 and other common big-blocks.
• Fits many truck and van models: C/K series, Suburban, Blazer, G-series, P-series and more.
• Also compatible with select Oldsmobile, Pontiac and Buick V8 applications.

How does the MAS distributor improve ignition performance?

The unit combines a precision-machined shaft and treated 20CR steel gear for better wear resistance and consistent timing under load. The red HEI-style cap and robust wiring kit provide strong, reliable spark paths while supporting high-energy coils rated around 65K ohms, which helps stable combustion across RPM ranges.

• 20CR steel gears: hardened for long life and reduced wear.
• Red HEI cap: improved terminal durability and consistent firing order.
• Wiring kit included: simplifies installation and ensures correct connections.
• 65K coil compatibility: supports high-resistance coils for modernized ignition setups.

What comes in the box and how easy is installation?

The package includes the MAS HEI distributor with a red cap, a wiring harness kit tailored for HEI systems, and mounting hardware where applicable. Installation is straightforward for anyone comfortable with basic engine timing procedures: remove the old distributor, set the engine to top dead center on cylinder #1, and install while aligning the rotor and gear timing per manufacturer guidelines.

• Complete wiring kit: plug-and-play style connectors for HEI terminals.
• Black 90-degree plug boots: protect spark plug ends and simplify routing.
• Installation notes: set engine TDC and match rotor position during swap.
• One-year limited warranty: covers replacement in specified conditions.

Is this MAS distributor durable for street and light performance use?

MAS designed the distributor for reliable everyday driving and light performance upgrades rather than extreme racing applications. The hardened gear, solid cap, and quality wiring make it suitable for restored classics, project trucks, and high-mileage engines that need renewed ignition reliability.

• Durable construction: treated steel gear resists wear over time.
• Appropriate for restoration and daily-driven performance builds.
• Not intended as a billet-racing-only component; balanced for longevity.
• Manufacturer part numbers included for cross-referencing fitment.

Who is this for? The MAS Performance HEI distributor is aimed at classic Chevy and GMC owners, restorers, and hobbyists who need a dependable replacement or an ignition upgrade without heavy customization. If you drive or rebuild small- or big-block V8s across 4.3L to 7.4L families — from C10s and Camaros to Suburbans and K-series trucks — this distributor offers a practical balance of durability, compatibility, and simplified installation.