Overview
The Crown Automotive 4486635K is a 5-piece distributor and camshaft gear kit for AMC V8 304 to 401 engines. It fits Jeep models built from 1970 to 1991, aimed at owners of older AMC-powered vehicles.
Covered models include the SJ-series Cherokee and Wagoneer, the Grand Wagoneer, CJ5, CJ6, CJ7, the Commando and a range of J-series trucks from the J-100 through the J-4800, plus the J10 and J20. Crown Automotive offers it as a replacement part for these vehicles.
Key features
- Five pieces in one kit
- Designed for AMC V8 304 to 401 engines
- Replacement distributor and camshaft gear drive
- Fitment list spans 1970 to 1991 Jeep models
Timing gear care
A distributor and camshaft gear drive links crankshaft timing to the ignition and valve train, so small wear changes can affect running. Gears and keys wear slowly, and play in the drive often shows up as rough running or hard starts before anything breaks.
When choosing parts for an older AMC V8, match the gear set to the engine family and check that the distributor shaft and drive gear fit together without binding. Replacing the distributor and gear drive as a set helps keep alignment consistent.
Inspect the gear teeth for chips or polish, and check the camshaft end play and key fit during any teardown. Keep the cover clean and oil the distributor bushing as part of routine service. Mark the gear position before removal so timing can be checked against the original setup.
- Look for chipped or polished gear teeth
- Check distributor shaft play
- Mark gear position before removal
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 4486635K |
| UPC | 70000637993 |
| Engine | AMC V8 304 to 401 |
| Pieces | 5 |
| Fitment type | Direct fit |
Vehicle fitment
It fits 1970 to 1991 Jeep models including the SJ Cherokee, Grand Wagoneer and Wagoneer, CJ5, CJ6, CJ7, Commando and J-series trucks, with trims named for each model. Check your year, model and trim against these entries before ordering.
The Cherokee (XJ) and Wrangler (YJ) are not on the list, and neither are the CJ3 or the Willys models.
Installation notes
Run the engine through a gradual break-in period after installation, and re-check timing and alignment after the first run. Gear drive work sets timing, so a professional setup is the sensible route.
What’s included
The kit contains five pieces. Check the package contents against your gear set needs before installation.