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.

Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) engine performance rating according to SAE J1995 (SAE Gross) standard.
Parameter Output
Power Rating 175 hp (130.5 kW) at 4400 RPM
Torque Rating 274 lbf⋅ft at 2400 RPM
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter Output
Power Rating 145 hp (108.13 kW) at 4200 RPM
Torque Rating 245 lbf⋅ft at 2000 RPM
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) engine general specifications.
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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Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) engine block, crankshaft and pistons specifications.
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
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) spark plugs and wires specifications.
Parameter Value
Spark Plugs AC Delco 45
Spark Plug Size 0.55 in
Spark Plug Gap 0.035 in
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) engine head and valvetrain specifications.
Parameter Value
Head Material Cast alloy iron
Valvetrain Type OHV
Valves per Cylinder 2
Camshaft Material Cast alloy iron
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) air intake specifications.
Parameter Value
Air Intake Method Naturally Aspirated
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) fuel injection specifications.
Parameter Value
Injection Type Carburetor
Injection Info 2-barrel Rochester downdraft type
with manual choke control
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) valve timings.
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.
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L)  Trademaster High Torque 145 hp 8.5:1 (1964-) valve timing diagram
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) valve timing diagram.
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) oil pump specifications.
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
Chevrolet gasoline Small-block Generation I 283 CID (4.3 L) Trademaster High Torque 145 hp 8.5:1 (1964-) water pump specifications.
Parameter Value
Water Pump Centrifugal type driven by fan belt
Water Pump Capacity 44.5 US gpm at 4000 RPM
Units:
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