The Basics
What Is a Police Package Car?
A police package was not a model. It was an option code — a line on an order form — applied to an ordinary body. Everything that made a police car a police car sat underneath, and almost none of it showed.
That single fact explains most of what people find confusing about these cars. It is why a police package station wagon was a perfectly normal thing to order. It is why chiefs’ cars and detective cars in plusher trim could be genuine police-package vehicles. And it is why identifying one from a photograph is far harder than it looks.
Where it came from
Before 1950 there was no such thing. A department bought an ordinary civilian sedan and sent it to its own garage or a local upfitter to have heavier springs, a bigger battery and a radio bracket fitted. Every department did it differently, and no two patrol cars in America were modified the same way.
Ford changed that in 1950 by doing the modifications on the assembly line, with standard parts, at a price printed on the order form. Chevrolet followed in 1955, Chrysler in 1956. The invention was not an engine. It was paperwork.
What was actually in the box
Suspension
The foundation. Heavy-duty shocks, extra-heavy-duty springs, a stiffer front anti-roll bar and — increasingly through the era — a rear one too, plus stiffer body mounts. On Chrysler products, which used torsion-bar front suspension, that meant special torsion bars and the highest available leaf count at the rear.
Manufacturer literature described this as tuned for high-speed handling and police duty, which is marketing language for two goals that pull against each other: control at sustained speed, and the durability to carry a boot full of equipment over a hundred thousand hard miles without sagging. The ride penalty was real and was never disguised. A police-package car is noticeably harsher than its civilian equivalent, and that has stayed true right through to the modern Charger.
Cooling — the system nobody talks about
If one part of the package deserves more attention than it gets, it is this one.
A patrol car spends most of its shift stationary with the engine running, and is then asked, without warning, to run flat out. That is the exact opposite of how a civilian car is used, and it is brutal on cooling. Packages therefore specified the largest available radiator, heavy-duty fans, an engine oil cooler and, behind an automatic, a transmission fluid cooler.
Charging
A police car is a rolling power station: radio, lights, siren, and later radar, all drawing current while the engine idles. Heavy-duty alternators and batteries were specified from the beginning. Ford’s 1950 package advertised a 60-ampere generator that held its output at idling speeds, which was the specific problem destroying post-war police fleets.
Brakes and instrumentation
Larger brakes, and a calibrated, certified speedometer. That last item was not a convenience. It was a legal instrument: an officer had to swear to what it read under oath, which is why it carried its own separate option code on some manufacturers’ order forms.
The best surviving description of how it worked
A factory placard on the dashboard of a surviving 1969 California Highway Patrol Polara sets out, in four lines, most of what this page has been describing:
Read as an engineering document rather than a notice, it tells you everything. The compressor had to be shut off above eighty because at pursuit speeds the engine needed every horsepower it had. It was not to be run during prolonged idle because the cooling system was already working at its limit standing still. And it was to be exercised once a week in winter because the car would sit for months and the seals would otherwise fail.
Note also what it is: an instruction to a person. Police-car writing widely repeats that Mopars had an arrangement that automatically disengaged the compressor at speed. They did not. The car assumed a professional was driving it and told him what to do.
What the package was not
- Not a specific model. The same package went on two-doors, four-doors and station wagons, in base trim and in plusher trim.
- Not necessarily a big engine. Engine choice was separate. Packages were ordered with everything from small V8s upward, depending on what the department needed and could afford.
- Not visible. Nothing about the exterior identified it. Livery, spotlights and beacons were fitted afterwards, usually by the department.
- Not one thing. Manufacturers offered pursuit and non-pursuit specifications, and what a code covered changed by year.
Why this matters if you are looking at a car. Because the package was invisible from outside, the only reliable evidence is the option code on the identification tag and whatever documentation came with the car. Paint and equipment prove nothing. How to identify a genuine police package car →
The whole era, end to end
The Golden Age devotes a full chapter to what was actually in the package, system by system, and traces the thirty-two years in which the police car went from a civilian sedan with a spotlight bolted on to the most specialised passenger vehicle in America — and then lost it all in five years.
Sixteen chapters, every claim checked against two independent sources, hedged, or cut.
See the ebookFrequently asked questions
What is a police package car?
A production car built with a manufacturer’s police option package: an option code applied to an ordinary body that added heavy-duty suspension, upgraded cooling and charging systems, larger brakes and a certified speedometer. It was not a separate model, and nothing about the exterior identified it.
When did police package cars start?
Ford offered the first factory police package in 1950. Before that, departments bought civilian cars and modified them locally, with no two forces doing it quite the same way. Chevrolet followed in 1955 and Chrysler in 1956.
Was a police package the same as a big engine?
No. Engine choice was ordered separately. The package was suspension, cooling, charging, brakes and instrumentation. A department could order the full package with a modest engine, and many did, because most police work is not pursuit.
Could you get a police package station wagon?
Yes, and it was a normal thing to order. The package was hardware underneath, and it went wherever the department asked for it — two-doors, four-doors and wagons alike.
Why is the ride so harsh?
Because the suspension had to do two things that conflict: stay controlled at sustained high speed, and carry a boot full of equipment over a hundred thousand hard miles without sagging. The ride penalty was real and manufacturers never disguised it.
Did police cars automatically switch off the air conditioning at speed?
No, despite the claim being widely repeated. A surviving factory dashboard placard from a 1969 California Highway Patrol Polara shows it was an instruction to the officer: turn the compressor on under 50 mph, off over 80, run it five minutes a week in winter, and do not use it during prolonged idle.