⚠️ Centrifugal and vacuum advance mechanisms; 'programmable' only via spring/weight changes. Requires timing light and dwell meter for adjustment after installation. Not an electronic module.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 1956 Dodge Royal 315 cu in (5.2L) Super Red Ram Hemi V8, 2-bbl, 218 hp and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years.