Scout 4-196
1966–1980111 hp / 180 lb-ft representative early rating
Large-displacement four-cylinder Scout engine
TorqueList Original Technical Art
International Harvester 4-196 Comanche
V4 · N/A
International Harvester · Comanche Four-Cylinder
International Harvester 4-196 Comanche
The larger Scout four-cylinder, effectively using the 392 SV's bore and stroke on four cylinders.
196
Cubic inches
International enlarged its four-cylinder concept dramatically for the 196, producing nearly V8-like displacement per cylinder and strong low-speed torque for Scout duty.
Key variants
All variantsScout 4-196
Displacement
196 ci
Bore
4.125"
Stroke
3.65625"
Years
1966–1980
Key Takeaway
The 196 enlarged International’s four-cylinder concept to nearly 200 cubic inches using a 4.125-inch bore and 3.65625-inch stroke. Its unusually large cylinders and heavy cast-iron OHV construction produced strong low-rpm torque at the expense of weight and high-rpm smoothness.
Technical Specifications
- Compression
- 8.1:1 in documented Scout specification
- Horsepower
- 111 hp @ 4400 rpm in documented 1966–1970 specification
- Torque
- 180 lb-ft @ 2000 rpm
- Architecture
- OHV four-cylinder related to IH SV engine family
- Block
- Cast iron
- Cylinder heads
- Cast iron
- Valvetrain
- Pushrod OHV
- Aspiration
- Naturally aspirated
- Fuel delivery
- Carbureted
- Firing order
- 1-3-4-2
The 196 enlarged International’s four-cylinder concept to nearly 200 cubic inches using a 4.125-inch bore and 3.65625-inch stroke. Its unusually large cylinders and heavy cast-iron OHV construction produced strong low-rpm torque at the expense of weight and high-rpm smoothness.
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
- 4-196 / C-196 Comanche
- Casting numbers
- No single universal 4-196 casting is retained here; identify by engine stamp plus the distinctive 4.125 x 3.65625-inch bore/stroke and Scout application.
- Power rating
- SAE gross / period brake horsepower in early Scout specifications; later emissions-era ratings varied
- Horsepower RPM
- 111 hp @ 4400 rpm in documented 1966–1970 Scout specification
- Torque RPM
- 180 lb-ft @ 2000 rpm
Operating Specs
- Production notes
- Introduced for the Scout in 1966, the 196 enlarged the four-cylinder concept to 4.125 x 3.65625 inches and outperformed the turbocharged 152, which was subsequently phased out.
Compatibility Notes
- The 196 shares its bore/stroke dimensions with the IH 392 V8 family but should be treated as its own four-cylinder engine for manifolds, ignition, cooling and installation parts.
- Verify Scout generation and transmission because flywheel, clutch, mounts, accessories and emissions hardware changed over its long production run.
Notable Applications
International Scout 800International Scout IIInternational light trucks in selected applications
Strengths
- Excellent low-rpm torque
- Simple robust construction
- Shares dimensional philosophy with SV family
Weaknesses / Watch-outs
- Heavy and slow-revving
- Limited top-end power
- Vibration inherent to large four-cylinder layout
Common Upgrades
- Electronic ignition
- Carburetor tuning
- Header/exhaust improvements
Racing History & Legacy
The 196 was a torque-oriented utility engine rather than a factory motorsport program. It became a durable off-road Scout powerplant and remained available through the Scout II era.
The 196 became the long-running four-cylinder Scout engine through the Scout II era. Its enormous per-cylinder displacement and low-speed manners make it one of the most distinctive engines in International’s light-truck history.
References & Image Credit
IH Scout engine specification document
technical reference
International Harvester operator manual — C152/C196/C304/C345/C392/C446/C549/C605
manufacturer service manual
Anything Scout — IH Scout engine output and availability reference
technical reference
IH Scout engine specification document
technical reference
International Harvester operator manual — C152/C196/C304/C345/C392/C446/C549/C605
manufacturer service manual
MotorTrend — International Scout engine-development history
historical reference
Key Factory / Build Variants
Engineering Notes Worth Knowing
01
4.125 x 3.65625-inch bore and stroke; 196 cu in / 3.2 L.
02
OHV four-cylinder related to International's larger truck-engine design family.
03
Documented Scout output: 111 hp at 4,400 rpm and 180 lb-ft at 2,000 rpm.
04
Used in Scout 800, Scout II, and selected International light-truck applications.
History · context · related reading
The Story Behind International Harvester 4-196 Comanche
When International wanted more torque without abandoning the Scout’s four-cylinder package, it simply made the concept much larger. The result was the 196, one of the biggest-displacement gasoline fours used in an American utility vehicle.
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