What engine is in a 1951 Chevy?
The 1951 Chevrolet used Chevrolet’s inline-6, the 216.5 cubic inch “Stovebolt Six,” delivering about 90–92 horsepower. A factory V8 option was not offered in 1951.
Context: Chevrolet in the early 1950s
In the early postwar era, Chevrolet relied on durable, simple inline-six powerplants for most passenger cars. The 1951 lineup, including Bel Air, Styleline, and Fleetline models, was powered primarily by the 216.5 cu in inline-six, paired with either a three-speed manual or an optional two-speed automatic transmission. The noted Chevrolet small-block V8 would not arrive until the mid-1950s, reshaping the brand’s performance image.
Under the hood: The 216.5 inline-six
Technical highlights of the engine that sat under the hood in most 1951 Chevrolets include the following:
- Displacement: 216.5 cubic inches (about 3.55 liters)
- Configuration: Inline six, often referred to as the “Stovebolt Six” for its enduring design
- Valve train: Overhead valve (OHV) design with pushrods
- Power output: Approximately 90–92 horsepower, depending on model and configuration
- Fuel system: Carbureted gasoline engine
- Transmission options: 3-speed manual standard; optional Powerglide two-speed automatic
In practice, the 216.5 inline-six was valued for reliability, straightforward maintenance, and good torque at everyday driving speeds—traits that matched the era’s emphasis on economy and durability.
Optional transmissions in 1951 Chev
Before examining performance details, it helps to understand how the car was sent to the wheels. The 1951 Chevrolet offered:
- 3-speed manual transmission as the baseline option
- Powerglide two-speed automatic as an available upgrade on many body styles
These options reflect Chevrolet’s focus on simple, robust drivetrains that could appeal to a wide customer base, from daily commuters to small-town families.
Was there a V8 option in 1951?
No. Chevrolet did not offer a factory V8 in the 1951 lineup. The company would introduce its famous small-block V8 in 1955 (initially 265 cubic inches), marking a major shift in performance and market positioning for Chevrolet. Until then, the inline-6 was the standard and enduring choice for most Chevrolets on the road in 1951.
Summary
For 1951 Chevrolets, the heart of the car was the 216.5 cu in inline-six “Stovebolt Six,” delivering around 90–92 hp and designed for reliability and ease of maintenance. There was no V8 option in 1951; the first Chevrolet V8 would arrive later in 1955, changing the brand’s performance landscape. The combination of the six-cylinder engine with manual or Powerglide transmission options defined the driving experience of Chevrolet’s 1951 models.
Why is it called a stovebolt engine?
A bolt (fastener) with a slotted head, used in the assembly of wood-burning stoves constructed from sheet metal. The Chevrolet Stovebolt engine, so called because the valve cover, lifter cover and timing cover, utilizes a fastener that resembles a stovebolt.
What size engine is in the 1951 Chevy truck?
It is powered by a 216ci inline 6 cylinder engine and 3-speed manual transmission that are believed to be original to the truck.
What is a 302 Chevy engine worth?
A genuine Chevy 302 engine, particularly the rare DZ302 from a '67-'69 Camaro Z/28, can be worth thousands of dollars, especially for original or restored components. However, a custom-built 302 using a 283 crank and a 327/350 block will have a value closer to the cost of its parts and labor, often ranging from a few hundred to a few thousand dollars depending on its condition and what parts are included.
Factors influencing the value
- Genuine DZ302 vs. custom build:
- Genuine DZ302: These are rare and highly sought after by collectors. An original, running DZ302 can fetch thousands of dollars.
- Custom-built 302: These engines are built using components from other small-block Chevy engines (like a 283 crank and a 327 or 350 block) and are generally less valuable than a true DZ302.
- Condition and completeness:
- Running condition: A complete, running engine will be worth more than a disassembled one.
- Components: The value increases with high-performance or original parts, such as a forged rotating assembly or specific heads.
- Market demand:
- Collector's item: The 302's history in Trans-Am racing makes it a popular engine for collectors and muscle car enthusiasts, which drives up demand and prices.
- Marketplace:
- Online auctions: You can find a range of prices on online auction sites like eBay, from a few hundred for parts to a couple thousand for complete engines.
How to determine the value of your engine
- Identify the engine: Is it a genuine DZ302 from a Z/28, or was it custom-built? This is the most crucial factor for valuation.
- Inspect the engine's condition: Check for rust, damage, and missing parts. A complete and running engine is worth significantly more.
- Document all components: Note the specific parts used, especially if they are original GM or high-performance upgrades.
- Research current market prices: Search for similar engines on auction sites and forums to get an idea of the current going rate.
What engine is in a 1951 Chevy Deluxe?
| Chevrolet Deluxe | |
|---|---|
| Engine | 216 cu in (3.5 L) 90 hp (67 kW) OHV I6 |
| Transmission | 3-speed manual Powerglide (1950–1952) |
| Dimensions | |
| Wheelbase | 116 in (2,946 mm) |
