What engine is in the 1955 Chevy 3100?
Two engines were offered for the 1955 Chevy 3100: a 235.5-cubic-inch inline-six known as the Stovebolt Six, and the 265-cubic-inch small-block V8 Chevrolet introduced that year. The inline-six was the standard powerplant, with the V8 available as an option for higher performance.
The 1955 model year marked a key moment for Chevrolet trucks, as the Advance-Design line brought modern styling and a new chassis. Within the 3100 pickup, buyers could opt for the durable inline-six or move up to the newer V8 for added power, signaling Chevrolet’s broader shift toward V8-equipped light trucks in the mid-1950s.
Engine options for the 1955 3100
The following options represent the two primary powertrains Chevrolet offered for the 3100 in 1955:
- 235.5 cu in inline-six "Stovebolt Six" — A proven, durable six-cylinder engine that formed the backbone of Chevrolet’s trucks and many cars of the era, valued for reliability and straightforward maintenance.
- 265 cu in small-block V8 — Chevrolet’s new overhead-valve V8 introduced in 1955, available as an option on 3100 pickups and providing noticeably more power and smoother operation than the inline-six.
These two options defined the powertrain choices for the 1955 3100, reflecting a balance between tried-and-true reliability and modern performance.
Historical context and availability
Context matters: 1955 was the year Chevrolet redesigned its light trucks with the Advance-Design platform, improving ride and handling across the lineup. The inline-six remained the workhorse for base configurations, while the V8 option represented Chevrolet’s push to bring V8 power into more trucks, a trend that would accelerate through the late 1950s.
- Inline-six as standard — The 235.5 cu in engine powered most base 3100 models, offering dependable torque and economy for everyday use.
- V8 option — The 265 cu in small-block V8 arrived in 1955 and could be ordered on 3100 trucks, delivering stronger performance for buyers seeking more capability.
In practice, the engine choice influenced performance, economy, and the truck’s role, with many buyers opting for the V8 as power needs grew during the era.
Summary
The 1955 Chevy 3100 offered two engines: the 235.5 cu in inline-six and the 265 cu in small-block V8. The inline-six provided dependable, economical operation, while the V8 option introduced modern V8 power to Chevrolets’ light-duty trucks, marking a significant shift in the lineup during the mid-1950s.
How much is a 1955 Chevy 3100 worth?
Typically, you can expect to pay around $30,300 for a 1955 Chevrolet Series 3100 1/2 Ton in good condition with average spec.
What engine came in a 1955 Chevy truck?
The standard engine was a 235 cubic inch (3.9L) inline-six, but for those looking for more power, an optional V8 engine (265 cubic inches) became available in late 1955, marking a significant upgrade from earlier models. Transmission: Most were equipped with a 3-speed manual transmission.
What size engine is in the Chevy 3100?
1952 Chevrolet 3100 Half Ton Specifications
The 1952 Chevy trucks featured a Thriftmaster 216.5-cubic inch in-line, six-cylinder, valve-in-head engine. The 216.5-cubic inch motor had a bore and stroke of 3.5 by 3.75 inches with a compression ratio of 6.5:1. It generated 90 horsepower at 3,400 rpm.
How much horsepower does a 1955 Chevy 3100 have?
145 horsepower
Introduced in mid-model year, the new design for the 1955 Chevrolet Series 3100 pickup was revolutionary from the cab forward. Inspired by passenger-car design, it had a wraparound windshield and eggcrate grille, and offered the option of Chevrolet's new 265-cubic-inch V-8, rated 145 horsepower under truck hoods.
