AMC/Jeep 290-401 V8 HEI Distributor

The TSP HEI Distributor for AMC V8 engines brings the entire ignition system into a single self-contained large-cap unit — coil, ignition module, cap, and rotor combined — purpose-built for the full family of AMC V8 engines from the 290 CID through the 401 CID. Compatible with all carbureted AMC and Jeep V8 applications including the 290 (4.8L), 304 (5.0L), 343 (5.6L), 360 (5.9L), 390 (6.4L), and 401 (6.6L), this is a straightforward ignition upgrade that eliminates points, condenser, and external coil wiring in a single installation.

The 65,000-volt internal HEI coil delivers substantially stronger spark energy than a factory points-style distributor, supporting easier cold starts, cleaner idle quality, and improved throttle response across the RPM range. A magnetic pickup trigger replaces the mechanical points contact, holding timing more accurately and requiring no routine maintenance. The machined aluminum housing and hardened steel dual-bushing construction are built for the demands of street, restoration, off-road, and performance carbureted builds.

Both mechanical and vacuum advance are included, with a vacuum advance adjustment tool shipped with the distributor to allow tuning of the vacuum advance curve for your specific application. Installation connects to a single 12-volt source — no external ignition coil, no ignition box, no points or condenser required. Whether you're refreshing a Javelin or AMX, rebuilding an Ambassador or Matador, restoring a Jeep CJ-7 304, or upgrading a Grand Wagoneer 360 or 401, this HEI distributor delivers reliable ignition performance with minimal wiring complexity.

Important: Designed for carbureted ignition systems only. Not compatible with AMC or Jeep inline-six engines. Requires a 12-volt electrical system with an alternator. Not compatible with 6-volt systems, generators, or ballast resistors. Steel distributor gear — verify compatibility with your camshaft material before installation.

Why Upgrade to HEI on Your AMC or Jeep V8?
The factory points-style distributor on AMC V8 engines was engineered to conservative timing specs with limited spark output. Points wear over time, timing drifts, and performance degrades between service intervals — problems that are amplified on performance builds or engines with high-compression pistons or aggressive camshafts. A High Energy Ignition distributor replaces the entire points and condenser system with an integrated coil, module, and magnetic trigger in one sealed unit. The result is stronger spark, more accurate timing, and a system that requires no routine contact maintenance over the life of the engine.

Performance Benefit
With 65,000 volts of integrated coil output and a magnetic pickup trigger, this HEI distributor fires spark plugs more reliably than a stock points setup across the full RPM range. Stronger, more consistent spark translates directly to easier cold starts, cleaner idle quality, and improved throttle response — especially noticeable on carbureted AMC V8 builds running aftermarket carburetors or performance camshafts. Both mechanical and vacuum advance are included, and the vacuum advance adjustment tool allows you to tune the vacuum advance curve to match your engine combination and driving conditions.