Story
The Hornet arrives
Hudson introduced the Hornet for 1951 as Series 7A, combining its low Step-Down construction with a new 308-cubic-inch H-145 flathead six. The first-year page covers the Club Coupe, four-door Sedan, Convertible Brougham, and the pillarless Hollywood hardtop introduced during the model year.
H-145 first, Twin H later
The factory brochure rates the standard H-145 at 145 gross horsepower with a single Carter two-barrel carburetor, a 7.2:1 aluminum head, and 308 cubic inches from a 3 13/16-inch bore and 4.5-inch stroke. A 6.7:1 iron-alloy head was available at no extra cost. Published torque references conflict, so this page retains 257 lb-ft as reported while leaving the final factory figure open.
Twin H-Power is an important 1951 story, but not a factory-installed 1951 model configuration. Hudson released the SP 306216 dealer kit in mid-November 1951 for $85.60. Its dual Carter WA-1 carburetors and dedicated manifolds raised the published rating to 160 horsepower. Regular-production factory availability began on January 18, 1952. A Twin H engine bay can therefore be correct period equipment on a 1951 car without proving factory installation.
Manual, overdrive, or Hydra-Matic
A synchronized three-speed manual was standard. Overdrive was optional, as was four-forward-range Hydra-Matic. The 1951 brochure calls the automatic Hydra-Matic, not Dual-Range Hydra-Matic. Axle ratios depended on transmission: 4.10 standard or 3.58 optional with the manual, 4.55 standard or 4.10 optional with overdrive, and 3.58 with Hydra-Matic.
The Monobilt body and frame placed the floor between the perimeter rails. Independent front suspension used coil springs; the rear used semi-elliptic leaf springs. Direct-acting hydraulic shocks, front and rear stabilizers, and 11-inch Triple-Safe hydraulic drum brakes with a reserve mechanical system completed the chassis.
Four bodies and a carefully trimmed cabin
The Club Coupe, Sedan, and Convertible opened the year, with the pillarless Hollywood added later. Factory upholstery paired nylon three-dimensional weave cloth in tan-brown/gold or blue-gray/blue combinations with Dura-fab trim. Foam cushions, carpeting, an electric clock, and an 18-inch steering wheel were standard Hornet details; exact trim materials still varied by body.
Seventeen Hudson model-year paint codes are retained here as shared 1951 context. The final Hornet body, trim, two-tone, and effective-date selector has not been recovered, so a specific car's original finish must agree with its hinge-post code, protected paint, upholstery, and paperwork.
Production and stock-car history
Published records give 43,666 Hornets for 1951, including 2,101 Hollywood hardtops and 551 convertibles. No audited split between the Club Coupe and Sedan has been recovered. Original base-price references list $2,543 for the Club Coupe, $2,568 for the Sedan, $2,869 for the Hollywood, and $3,099 for the Convertible Brougham.
The Hornet's low center of gravity, durable 308, and factory support quickly mattered in NASCAR. Marshall Teague won at Daytona and took five wins in Hudsons during 1951. Herb Thomas won seven races that year, five after moving to Hudson, and secured the championship. Those competition results explain the model's reputation; race preparation does not define the equipment installed in every street car.