Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) engine DIY maintenance and service manual

General Information

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) is an 230 in³ (3.77 L) internal combustion reciprocating Inline 6 engine. It has bore/stroke ratio of 3.875 in × 3.25 in (9.842 cm × 8.26 cm), and uses 8.50:1 compression. This engine was rated 100 hp (74.57 kW) at 3200 rpm and 200 lbf⋅ft (271.16 N⋅m) of torque at 1200 rpm. It was used in Chevrolet and GMC cars.

Engine Performance Rating

SAE J1995 (SAE Gross)

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) engine performance rating according to SAE J1995 (SAE Gross) standard.
Parameter	Output
Power Rating	125 hp (93.21 kW) at 3400 RPM
Torque Rating	284.72 N⋅m210 lbf⋅ft210 lbf⋅ft at 1600 RPM

SAE J1349 (SAE Net)

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	100 hp (74.57 kW) at 3200 RPM
Torque Rating	271.16 N⋅m200 lbf⋅ft200 lbf⋅ft at 1200 RPM

Specifications

General

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Gasoline
Cylinder Configuration	Inline 6
Engine Displacement	3.77 L230 in³230 in³
Bore	9.842 cm3.875 in3.875 in
Stroke	8.26 cm3.25 in3.25 in
Compression Ratio	8.50:1
Firing Order	1-5-3-6-2-4
Curb Weight	210.92 kg465 lb465 lb
Curb Idle Speed	450-475 RPMs

Photos

Please help our community. Upload your photos of Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) engine.

Block, crankshaft and pistons

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) engine block, crankshaft and pistons specifications.
Parameter	Value
Block Material	Cast alloy iron
Crankshaft Material	Cast nodular iron
Piston Material	Cast alloy aluminum with steel struts; 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

Spark Plugs and Wires

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) spark plugs and wires specifications.
Parameter	Value
Spark Plugs	AC Delco 44N
Spark Plug Size	0.55 in0.55 in14 mm

Engine head and valvetrain

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) engine head and valvetrain specifications.
Parameter	Value
Head Material	Cast alloy iron
Valvetrain Type	OHV
Valves per Cylinder	2
Camshaft Material	Cast alloy iron

Air Intake

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) air intake specifications.
Parameter	Value
Air Intake Method	Naturally Aspirated

Fuel Injection

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) fuel injection specifications.
Parameter	Value
Injection Type	Carburetor
Injection Info	Downdraft Rochester with manual choke control

Valve Timings

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) valve timings.
Parameter	Value
Intake Opens	18° B.T.D.C.
Intake Closes	54° A.B.D.C.
Intake Duration	252°
Exhaust Opens	52° B.B.D.C.
Exhaust Closes	20° A.T.D.C.
Exhaust Duration	252°
Valves Overlap	144°
Ignition Timing	5° B.T.C.

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) valve timing diagram.

Oil Pump

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) oil pump specifications.
Parameter	Value
Oil Pump	Spur-gear type driven by distributor shaft
Oil Pump Pressure	4.08 atm.60 Psi60 Psi at 2000 RPM
Oil Pump Capacity	22.71 lpm5 UK gpm6 US gpm at 2000 RPM

Water Pump

Chevrolet gasoline Straight-6 Third generation 230 CID (3.8 L) High Torque 100 hp (with economy carburetor) water pump specifications.
Parameter	Value
Water Pump	Centrifugal type driven by fan belt
Water Pump Capacity	264.95 lpm58.28 UK gpm70 US gpm at 4400 RPM