1955 Lincoln 341
1955225 hp / 332 lb-ft
One-year larger-bore evolution of the Lincoln Y-block
TorqueList Original Technical Art
Lincoln 341 Y-Block V8
V8 · N/A
Lincoln · Lincoln Y-Block
Lincoln 341 Y-Block V8
The one-year 1955 Lincoln V8 created by boring the 317 to nearly four inches.
341
Cubic inches
The 341 was a transitional one-year Lincoln engine, keeping the 317's stroke while opening the bore before the 368 arrived with both larger bore and longer stroke.
Key variants
All variants1955 Lincoln 341
Displacement
341 ci
Bore
3.9375"
Stroke
3.5"
Years
1955
Key Takeaway
The 341 kept the 317's 3.50-inch stroke and increased bore to 3.9375 inches. The one-year combination added torque and horsepower while retaining the heavy-duty Lincoln Y-block structure.
Technical Specifications
- Compression
- 8.5:1
- Horsepower
- 225 hp @ 4400 rpm
- Torque
- 332 lb-ft @ 2500 rpm
- Architecture
- 90-degree OHV V8, Lincoln Y-block
- Block
- Cast iron
- Cylinder heads
- Cast iron
- Valvetrain
- Pushrod OHV
- Aspiration
- Naturally aspirated
- Fuel delivery
- Carbureted
- Firing order
- 1-5-4-8-6-3-7-2
The 341 kept the 317's 3.50-inch stroke and increased bore to 3.9375 inches. The one-year combination added torque and horsepower while retaining the heavy-duty Lincoln Y-block structure.
Internal Specifications
Variant-specific values are labeled. Engine families that span multiple years or RPOs can have different heads, cams, induction and rotating parts, so the exact code/year always takes priority.
Identification & Output
- Engine codes / RPO
- EBJ family / 1955 Lincoln 341 application — identify by EBJ casting/engineering family plus engine serial and model year
- Casting numbers
- EBJ (1955 Lincoln 341 Y-block casting family reference)
- Power rating
- Period brake horsepower / SAE gross-era rating
- Horsepower RPM
- 225 hp @ 4400 rpm
- Torque RPM
- 332 lb-ft @ 2500 rpm
Operating Specs
- Production notes
- For 1955 Lincoln enlarged the Y-block bore to 3.9375 inches while retaining the 3.50-inch stroke, producing 341 cid and 225 hp.
Compatibility Notes
- The 341 belongs to the Lincoln Y-block family, not the smaller Ford Y-block. Verify EBJ casting/application before ordering Ford-Y-block parts.
- Although closely related to the 317 and 368, bore size, pistons, heads, induction and year-specific external equipment differ; check part numbers rather than assuming full interchange.
Notable Applications
1955 Lincoln Capri1955 Lincoln Custom
Strengths
- Large bore for its era
- Strong torque
- Rare one-year Lincoln configuration
Weaknesses / Watch-outs
- One-year parts combination
- Heavy
- Limited parts availability
Common Upgrades
- Period four-barrel restoration
- Electronic ignition
- Exhaust improvements
Racing History & Legacy
The 341 arrived for 1955 after the original Carrera Panamericana had ended, so it did not inherit the 317’s factory Mexican Road Race program. Its role was production luxury/performance development rather than a separate headline works-racing campaign.
The one-year 341 bridged the Carrera-proven 317 and the 368, showing how quickly Lincoln increased displacement and output during the mid-1950s horsepower race.
References & Image Credit
Ford Y-Block — Lincoln 341 dimensions
technical reference
Ford Classics — 341 output
technical reference
Hemmings — 1955 Lincoln Capri 341 specifications
period spec
Lincoln Y-block casting identification — EAD/EBJ/ECU
technical reference
Carrera Panamericana — Lincoln stock-car class history
official event history
Key Factory / Build Variants
Engineering Notes Worth Knowing
01
341 cu in / 5.6 L with 3.9375 x 3.50-inch bore and stroke.
02
90-degree OHV Lincoln Y-block V8.
03
Naturally aspirated and carbureted.
04
Factory rating: 225 hp and 332 lb-ft.
History · context · related reading
The Story Behind Lincoln 341 Y-Block V8
The 341 was a one-year bridge in Lincoln's rapid mid-1950s displacement growth. It kept the proven Y-block foundation but opened the bore before the larger 368 arrived.
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