LaMulaAuto HEI Ignition Distributor for Ford 240/300 Inline-6 — One-Wire 65kV Coil, Complete Assembly

LaMulaAuto HEI Ignition Distributor is a complete direct-replacement distributor assembly engineered to restore reliable spark and timing on Ford 240/300 inline-six engines with a one-wire, 65kV coil configuration.

Designed as a turnkey replacement for older or worn distributors, this LaMulaAuto unit fits Ford Big Six engines (3.9L/240ci and 4.9L/300ci) used in F100, F150, F250, E100 and E150 trucks and vans. It ships as a full assembly—cap, rotor, module, coil, vacuum advance, shaft and gear—so you receive everything required for a like-for-like swap into carbureted, non-EFI ignition systems. Built with a CNC-machined aluminum housing and quality internal components, the distributor aims to restore consistent spark output up to 7,500 RPM and is rated at a 65,000-volt coil for dependable ignition performance.

How does this distributor fit my Ford 240 or 300 inline-six?

This unit is made as a direct replacement with an interchange reference of JM6528 and matches factory mounting points and drive gear fitment for Big Six engines. The one-wire coil design simplifies the electrical side, but check your vehicle's ignition wiring to confirm compatibility.

• Fits 3.9L/240ci and 4.9L/300ci Ford inline-six engines.
• Compatible with F100, F150, F250, E100, E150 models using carbureted ignition.
• Interchange number: JM6528 for cross-reference.
• Designed to accept factory drive gear and shaft orientation.

What components come with the LaMulaAuto HEI distributor?

The distributor arrives as a complete assembly to minimize parts hunting and mismatch risks. It includes all major elements you need to install and restore ignition function, though professional installation is recommended and no printed instructions are provided.

• Distributor housing and shaft—CNC-machined aluminum construction.
• Cap and rotor, electronic ignition module, and 65kV coil included.
• Vacuum advance unit and correct-drive gear supplied with the assembly.
• Plug-and-play design intended for direct swap replacements.

Will this improve starting and running consistency?

Replacing a worn distributor often restores cranking spark and steady timing, which can improve cold starts and steady idle behavior. While results depend on overall ignition and fuel system condition, this distributor is built to deliver consistent spark energy and accurate mechanical timing under normal operating ranges.

• 65kV coil for strong spark energy across the RPM band.
• Accurate timing maintained up to 7,500 RPM for typical driving and light performance use.
• Durable internals and sealed cap to resist common wear points.
• OEM-fit housing reduces slop and timing variation compared with worn OEM units.

How difficult is installation and what should I prepare?

Installation is straightforward for someone experienced with distributor swaps but requires care to preserve timing and proper rotor index. The unit is one-wire for the coil, but you should set initial timing with a timing light after installation and verify routing of vacuum advance if present.

• Professional or experienced do-it-yourself installation recommended.
• No printed instructions included—have service manual or installation procedure available.
• Set base timing with a timing light and adjust per engine specifications.
• Verify coil grounding and single-wire connection to the ignition system.

Who this is for: The LaMulaAuto HEI Ignition Distributor is for owners, restorers, and mechanics working on older Ford Big Six trucks and vans who need a reliable, full-assembly replacement. It suits vehicles with carbureted, non-EFI ignition systems where an OEM-style swap is preferred, and for anyone wanting a durable, plug-and-play distributor backed by a one-year warranty and responsive support.