Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-)
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) is an 283 in³ (4.64 L) internal combustion reciprocating V8 engine. It has bore/stroke ratio of 3.875 in × 3 in (9.842 cm × 7.62 cm), and uses 8.5:1 compression. This engine was rated 145 hp (108.13 kW) at 4200 rpm and 245 lbf⋅ft (332.18 N⋅m) of torque at 2000 rpm. It was used in Chevrolet and GMC cars.
Parameter | Output |
---|---|
Power Rating | 175 hp (130.5 kW) at 4400 RPM |
Torque Rating | 274 lbf⋅ft at 2400 RPM |
Parameter | Output |
---|---|
Power Rating | 145 hp (108.13 kW) at 4200 RPM |
Torque Rating | 245 lbf⋅ft at 2000 RPM |
Parameter | Value |
---|---|
Type | Internal Combustion Reciprocating |
Fuel Type | Gasoline |
Cylinder Configuration | V8 |
Engine Displacement | 283 in³ |
Bore | 3.875 in |
Stroke | 3 in |
Compression Ratio | 8.5:1 |
Firing Order | 1-8-4-3-6-5-7-2 |
Curb Weight | 607 lb |
Curb Idle Speed | 450-475 RPMs |
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Parameter | Value |
---|---|
Block Material | Cast alloy iron |
Crankshaft Material | Forged, high carbon steel |
Piston Material | Cast alloy aluminum with steel struts; flat head; tin-plated; cam ground; 3 ring grooves above piston pin |
Piston Pin Material | Tubular, hardened chrome-alloy steel |
Connecting Rod Material | Forged carbon steel; I-beam section |
Parameter | Value |
---|---|
Spark Plugs | AC Delco 45 |
Spark Plug Size | 0.55 in |
Spark Plug Gap | 0.035 in |
Parameter | Value |
---|---|
Head Material | Cast alloy iron |
Valvetrain Type | OHV |
Valves per Cylinder | 2 |
Camshaft Material | Cast alloy iron |
Parameter | Value |
---|---|
Air Intake Method | Naturally Aspirated |
Parameter | Value |
---|---|
Injection Type | Carburetor |
Injection Info | 2-barrel Rochester downdraft type with manual choke control |
Parameter | Value |
---|---|
Intake Opens | 12.5° B.T.D.C. |
Intake Closes | 57.5° A.B.D.C. |
Intake Duration | 250° |
Exhaust Opens | 54.5° B.B.D.C. |
Exhaust Closes | 15.5° A.T.D.C. |
Exhaust Duration | 250° |
Valves Overlap | 140° |
Ignition Timing | 4° B.T.C. |
Parameter | Value |
---|---|
Oil Pump | Spur-gear type driven by distributor shaft |
Oil Pump Pressure | 30 Psi at 1200 RPM |
Oil Pump Capacity | 4.1 US gpm at 1200 RPM |
Parameter | Value |
---|---|
Water Pump | Centrifugal type driven by fan belt |
Water Pump Capacity | 44.5 US gpm at 4000 RPM |