GENERAL SPECIFICATIONS
|
| Model Designation:
150, 210 & Bel Air w/4-barrel carburetor & Dual Exhaust (all engines available) |
| Wheel base: 117-1/2 |
| Valve Location: In
head |
| Bore and
Stroke: 4.125 x 3.25 |
| Piston displacement, Cubic
Inches: 348 |
| Compression
ratio: 9.50 |
| Maximum
Brake Horsepower: w/4-barrel carb: 250
@ 4400 RPM |
| Maximum
Torque Lbs.Ft. @ RPM: w/4-barrel carb: 355
@ 2800 RPM |
| Normal
Oil Pressure Pounds: 35 |
TUNE UP SPECIFICATIONS (all models) |
| Spark Plug
Make: AC 44 |
| Spark Plug
Gap, Inch: .035 |
| Firing
Order: 18436572 (front to rear left bank: 1-3-5-7, right bank: 2-4-6-8) |
| Timing
Mark: 4 degrees BTDC; Location: Damper |
| Engine
Idle Speed, RPM: 425 |
| Compression
Pressure & Cranking Speed: 160 min. |
| Voltage & Polarity: 12
volts, negative ground |
PISTON AND RING SPECIFICATIONS
|
| Fitting
Pistons with Scale: Pistons
removed from above. Shim thickness: .0015 |
| Pounds
on a Pull Scale: 7-18 |
Ring End
Gap: In tapered bores,
fit rings in tightest portion of ring travel
Compression: .015
Oil: .015 |
| Wristpin
Diameter, Inch: .9896 |
VALVE SPECIFICATIONS
|
Operating
Clearance:
Intake: 0 Exhaust: 0 |
| Valve Seat
Angle, degrees: 45 |
Valve Timing: (BTDC
= before top dead center; ATDC = after top dead
center)
Intake
opens: 29-2/3 BTDC Exhaust
Closes: 36-5/6 ATDC |
Valve Spring
Pressure Pounds at Inches Length:
Inner
Spring: 184 @ 1.23 |
| Valve Lift Zero Lash: Intake: .3987 Exhaust: .3987 |
| Stem Diameter: Intake: .3715-.3722 Exhaust: .3410-.3417 |
| Valve Stem
Clearance: Intake: .001-.0027; Exhaust:
.0025-.0042 |
ENGINE BEARING SPECIFICATIONS
|
Connecting Rod Bearings:
Journal
Diameter, Inches: 2.199-2.200
Bearing Clearance, Inch: .0007-.0027 |
Main Bearings:
Journal
Diameter, Inches: 2.4980-2.4990
Bearing clearance: .0006-.0032
Shaft End Play: .003-.007 (Thrust
on Bearing 5)
|
ENGINE TIGHTENING SPECS (FT./LBS) |
| Spark Plugs: 25 |
| Cylinder Head Bolts: 60-70 |
| Intake Manifold: 25-35 |
| Exhaust Manifold: Center clamp bolts 25-30; end clamp bolts: 15-20 |
| Rocker Arm Shaft Bracket: none |
| Rocker Arm Covers: 25 (inch/lbs) |
| Connecting Rod Cap Bolts: 35-45 |
| Main Bearing Cap Bolts: 95-105 |
| Flywheel to Crankshaft: 55-65 |
| Vibration Damper or Pulley: Pressed on |
CAPACITY DATA
|
Cooling
System:
Without
heater: 22 quarts
With heater: 23 quarts |
| Fuel Tank: 20 gallons; Station Wagon 17 gallons |
| Engine
Oil: 4 quarts + 1 quart for filter change |
| Transmission: Standard: 2 pints; w/overdrive: 3 pints; Automatic: 3-1/2 quarts |
| Rear Axle: 4
pints |
DISTRIBUTOR SPECIFICATIONS
|
| Distributor part number: 1110907
(distributor rotates counter-clockwise) |
| Cam Angle,
degrees: 30 |
| Breaker Point opening, Inch: Turn adjusting screw in (clockwise) until engine misfires. Then turn screw 1/2 turn in opposite direction. |
| Condenser
Capacity: .18-.23
Mfds. |
| Breaker Arm Spring Tension: 19-23
Oz. |
Centrifugal Advance: (degrees
at RPM of distributor)
Advance starts: 1-1/2 @ 425 RPM
Full Advance: 12 @ 2000 RPM
Inches of Vacuum to Start Plunger Movement: 7-9
Inches of Vacuum for Full Plunger Movement: 15 - 16
Maximum Vacuum Advance Dist., Degrees: 7-1/2
|
GENERATOR SPECIFICATIONS
|
| Generator Number: 1102043, 1102096, 1102097, 1102114, 1102115, 1102059 (generator rotates clockwise, 12 volts, Negative Ground) |
Generator output:
1102043: 30 amps @ 2310 RPM;
1102096: 30 amps @ 2240 RPM;
1102097: 30 amps @ 2240 RPM;
1102114: 35 amps @ 2630 RPM;
1102115: 35 amps @ 2630 RPM;
1102059: 30 amps @ 2310 RPM |
| Brush Spring Tension: 28 oz. |
REGULATOR SPECIFICATIONS
|
| Regulator Number: 1119001, 1119002 |
Cutout Relay:
Voltage to close points: 12.6
Armature Air Gap: .020 |
| Voltage Regulator Setting: 14.3 volts |
| Current and Voltage Armature Air Gap: .075 inches |
| Current Regulator Setting: 30 amps |
STARTING
MOTOR SPECIFICATIONS
|
| Part number: 1107668; 1107687 (rotates clockwise) |
| Bush Spring
Tension, Ounces: 35 |
| No Load
Test: 65-100
amps, 10.6 volts @ 3600-5100 RPM |
| Torque
Test: 300-350 Amps, 3.5
volts; 10-1/2 ft.lbs torque |
WHEEL ALIGNMENT SPECIFICATIONS
|
Caster,
Degrees
Limits: +1/2 to +1-1/2
Desired: +1 |
Camber,
Degrees
Limits: 0 to +1
Desired: +1/2 |
| Toe-In,
Inches: 5/32 to 7/32 |
Toe-Out
on Turns, Degrees: (If
toe-out is incorrect, when other adjustments are
correct, look for bent steering arms.)
Outer wheel: 18-1/2
Inner Wheel: 20 |
Steering Axis Degrees: (If
spindle support angle is incorrect,
but camber is correct, look for bent suspension
arms or steering knuckle support)
3-1/2 to 4-1/2 |
1958 Chevrolet 348 (250 hp) V8 Engine Specs
1958 Chevrolet 348 (250 hp) V8 Engine Specs
1958 Chevrolet 348 (250hp) V8 Engine Distributor Specs
1958 Chevrolet 348 (250hp) V8 Engine Generator Specs
1958 Chevrolet 348 (250hp) V8 Engine Regulator Specs
1958 Chevrolet 348 (250hp) V8 Engine Starting Motor Specs
1958 Chevrolet 348 (250 hp) V8 Engine Tightening Specs
1958 Chevrolet Wheel Alignment Specs
Other 1958 Chevrolet Engine Options
1958 Chevrolet 265 (145 hp) Inline 6 Engine Specs
1958 Chevrolet 283 (185 hp) V8 Engine Specs
1958 Chevrolet 283 (250 hp) V8 Engine Specs
1958 Chevrolet 348 (280 hp) V8 Engine Specs
1958 Chevrolet 283 (290 hp) V8 Engine Specs
1958 Chevrolet 348 (300 hp) V8 Engine Specs
1958 Chevrolet 348 (315 hp) V8 Engine Specs
Return to Chevrolet Engine Specs Index
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