1929 Cadillac: Series 341-B History, Specs, and Buyer Guide

Why does the 1929 Cadillac still command attention? It combined a large V8, formal American coachwork, and a level of customization that made each surviving car more individual than its series badge suggests. For wider context, explore our classic cars editorial collection.

The 1929 model also arrived at a decisive moment in American motoring. Cadillac was expanding its engineering and luxury credentials while the wider economy entered a period of instability. The 1929 Census abstract remains useful for understanding how period automotive data was recorded within the broader industrial economy.

What exactly was the 1929 Cadillac?

The phrase “1929 Cadillac” does not identify one single body or trim level. It generally refers to Cadillac cars produced for the 1929 model year, with the Series 341-B representing the principal V8 update. Buyers could choose among multiple closed and open body styles, wheelbases, interior treatments, and coachbuilt appointments.

At the center was Cadillac’s 341 cubic inch V8, a naturally aspirated L-head engine designed for smooth, confident progress rather than sports-car urgency. The engine used a 90-degree layout and delivered approximately 90 horsepower in period specifications. Power went to the rear wheels through a three-speed manual transmission.

Cadillac’s official heritage record places the 1929 range within a broader V8 family that included the 341-A and 341-B engines. It also records 40,965 Cadillac cars produced in 1929, together with several period price points and the adoption of safety glass and chrome plating as standard equipment. The GM heritage record provides a useful factory-level reference for those figures.

Why did the Series 341-B matter in 1929?

One important change was the introduction of synchromesh shifting. Earlier manual transmissions required greater timing from the driver, especially when changing down through the gears. Synchromesh helped equalize gear speeds, making the large Cadillac easier to operate in increasingly busy urban traffic.

The 341-B also reflected Cadillac’s growing emphasis on occupant protection and convenience. Security-Plate safety glass was fitted to the windows, electrically powered windshield wipers became part of the specification, and chrome-plated details added a brighter visual finish.

These improvements did not transform the Cadillac into a lightweight or compact automobile. Its appeal remained connected to size, stability, dignity, and quiet authority. The car was intended to make long-distance travel feel composed while presenting its owner with a substantial public presence.

Which specifications define a 1929 Cadillac?

A typical Series 341-B is recognized by its large flathead V8, rear-wheel-drive layout, and substantial chassis. The standard wheelbase was approximately 140 inches, although Cadillac also supported longer commercial chassis configurations. That scale created generous cabin space and allowed coachbuilders to develop formal sedans, phaetons, limousines, coupes, and cabriolets.

• Engine: 341 cubic inch, 90-degree L-head V8
• Power: approximately 90 horsepower
• Transmission: three-speed manual with synchromesh
• Drive layout: front engine with rear-wheel drive
• Typical wheelbase: approximately 140 inches
• Body suppliers: Fisher and Fleetwood, with additional custom coachbuilders available
• Braking: mechanical drum brakes

Specifications can vary by body style and production configuration. A Fleetwood limousine, a Fisher sedan, and a dual-cowl phaeton may share the same mechanical identity while offering very different dimensions, weight, seating arrangements, and restoration requirements.

How did coachwork shape the ownership experience?

Consider two 1929 Cadillacs parked side by side. One may be a restrained closed sedan with a formal roofline and mohair interior. The other may be an open phaeton with separate windshields, exposed cabin lines, and a more theatrical presence. Both can be authentic Series 341-B cars, yet they appeal to different collectors.

Fisher coachwork generally provided Cadillac’s more standardized bodies, while Fleetwood supplied more exclusive designs and finishes. Owners could also specify combinations of paint, upholstery, wood trim, lamps, luggage equipment, and wheel treatments. This variety is one reason the model is better understood as a family of luxury automobiles than as a single fixed design.

When you compare the 1929 Cadillac with nearby American classics, body purpose becomes just as important as engine size. Our editorial coverage of our 1930 American cars offers a useful contrast between formal luxury vehicles and the broader range of American automotive design developing around the same period.

The international setting also matters. A Canadian government report recorded 262,625 cars produced in Canada during 1929, although that figure covered the national automobile industry rather than Cadillac alone. The Canadian government report illustrates how quickly automobile manufacturing and ownership had become part of a wider North American system.

What should you inspect before buying one today?

Imagine finding a 1929 Cadillac with attractive paint, complete brightwork, and a promising interior. The first question should not be whether it looks impressive. You should ask whether the car retains its correct identity, whether the body and chassis correspond, and whether the mechanical systems have been maintained responsibly.

Start with the engine number, firewall identification, body style, and available ownership records. Period Cadillac documentation is valuable because production changes and service requirements could be tied to engine numbers. A car with a clear chain of ownership may justify a stronger valuation than an equally attractive example with uncertain provenance.

Inspect the V8 for cracks, unauthorized modifications, oil pressure problems, cooling-system corrosion, and evidence of poor storage. Flathead engines are mechanically straightforward compared with many later designs, but age introduces risks around seals, gaskets, wiring, fuel systems, and cooling passages.

The transmission deserves careful attention. Synchromesh improves usability, but it does not eliminate wear. Test gear engagement when the car is warm, listen for bearing noise, and confirm that the clutch releases cleanly. A repair can become complicated when original components are missing or when previous work altered the factory configuration.

Bodywork may represent the largest restoration expense. Check the lower door sections, sills, floor structure, firewall, wheel arches, and areas around the running boards. Open cars can also require extensive work on folding mechanisms, top frames, windshield assemblies, and weather-exposed wood or trim.

The economic backdrop is another reason to examine historical records carefully. The December 1929 issue of the December 1929 survey preserves contemporaneous business information from a year marked by major economic disruption. That context does not determine the value of an individual Cadillac, but it helps explain why production, ownership, and later survival followed uneven paths.

How does it compare with other American classics?

The 1929 Cadillac occupied a different position from a practical Ford or a lighter touring car. It emphasized refinement, size, equipment, and formal presentation. A Ford Model A could be easier to operate, maintain, and use regularly, while the Cadillac offered a more imposing driving experience and greater coachwork variety.

If your interest is in period utility and mechanical simplicity, our coverage of our 1929 Ford Model A pickup provides a useful comparison. If you are studying commercial design, our 1929 Model A Ford truck shows how differently the same era approached work-focused transportation.

The comparison should not be reduced to a question of which car is better. The right choice depends on how you plan to use it. A Cadillac suits a collector drawn to formal presence, coachbuilt detail, and large-car engineering. A smaller vehicle may suit someone who values easier storage, lower operating demands, and more frequent driving.

For international collectors, transport and registration requirements should be investigated before purchase. Confirm import rules, historical-vehicle eligibility, parts availability, insurance terms, and workshop support in your country. The original specification is only one part of ownership; local infrastructure can shape the practical experience just as strongly.

What makes a 1929 Cadillac collectible?

Rarity alone does not determine desirability. The strongest examples usually combine an appealing body style, credible history, correct mechanical components, well-preserved details, and a restoration that respects the car’s period character.

Open coachwork often attracts attention because it displays the proportions and craftsmanship more clearly. Formal Fleetwood bodies can appeal to collectors who value exclusivity and architectural presence. A well-documented sedan may be less dramatic, but it can offer a more usable and coherent ownership proposition.

Originality should be assessed intelligently. A completely untouched car is uncommon, and some mechanical updates can make an antique vehicle safer or more reliable. The important distinction is between sympathetic maintenance and changes that erase the car’s identity, proportions, materials, or documented history.

Value also varies significantly by condition, body style, provenance, restoration quality, and market timing. Listing prices are not the same as completed sales, and a single auction result should never be treated as a universal benchmark. A professional inspection and comparison with genuinely similar cars are essential before making a financial decision.

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If the 1929 Cadillac appeals to you because it represents design, engineering, and cultural history in a single machine, you may also be interested in exploring other significant vehicles selected for their character and visual presence.

We bring together a curated selection of collectible and future-oriented mobility objects for enthusiasts, collectors, and design-conscious buyers. Browse our curated cars collection to discover vehicles that connect automotive heritage with TheArsenale perspective on extraordinary motion.