1958 Buick Specifications / Specs
Read these 1958 Buick Specifications to learn all original technical aspects of your 58 Buick! This page show all details and info especially prepared for each series – Special, Century, Super, Roadmaster and the all new Roadmaster Limited Series.
So, if you want to know how your 58 Buick came from the factory, you’re on the right page. And you’ll get some help if you want to restore your classic car to the original 1958 Buick Specifications. The info can help you to win Buick car shows or just a knowledge competition between experts!
| General Information | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Wheelbase (all models) | 122" | 122" | 127.5" | 127.5" | 127.5" |
| Tread - front | 59.5" | 60.0" | 60.0" | 60.0" | 60.0" |
| Tread - rear | 59" | 59" | 61" | 61" | 61" |
| Overall length with bumpers | 211.8" | 211.8" | 219.1" | 219.1" | 227.1" |
| Overall maximum width | 78.1" | 78.1" | 79.8" | 79.8" | 79.8" |
| Height at normal load (4-door Riviera) | 57.6" | 56.9" | 59.4" | 59.6" | 59.6" |
| Minimum road clearance | 6.1" | 6.4" | 6.4" | 6.6" | 6.6" |
| Swhipping Weight (4-doors) | 4,149 | 4,191 | 4,461 | 4,552 | 4,580 |
| Location of engine number | On cylinder block - front edge of valve push rod cover on drivers side | On cylinder block - front edge of valve push rod cover on drivers side | On cylinder block - front edge of valve push rod cover on drivers side | On cylinder block - front edge of valve push rod cover on drivers side | On cylinder block - front edge of valve push rod cover on drivers side |
| Location of serial number | Plate of left front pillar and stamped on left side rail - near front | Plate of left front pillar and stamped on left side rail - near front | Plate of left front pillar and stamped on left side rail - near front | Plate of left front pillar and stamped on left side rail - near front | Plate of left front pillar and stamped on left side rail - near front |
| Engine - General | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Engine type and make | Buick 90 degree V8 | Buick 90 degree V8 | Buick 90 degree V8 | Buick 90 degree V8 | Buick 90 degree V8 |
| Valve arrangement | Vertival in-head | Vertival in-head | Vertival in-head | Vertival in-head | Vertival in-head |
| Bore and stroke | 4.125" x 3.4" | 4.125" x 3.4" | 4.125" x 3.4" | 4.125" x 3.4" | 4.125" x 3.4" |
| Piston displacement | 364 cui | 364 cui | 364 cui | 364 cui | 364 cui |
| Cylinder numbering, front to rear - left | 2-4-6-8 | 2-4-6-8 | 2-4-6-8 | 2-4-6-8 | 2-4-6-8 |
| Cylinder numbering, front to rear - right | 1-3-5-7 | 1-3-5-7 | 1-3-5-7 | 1-3-5-7 | 1-3-5-7 |
| Firing order | 1-2-7-8-4-5-6-3 | 1-2-7-8-4-5-6-3 | 1-2-7-8-4-5-6-3 | 1-2-7-8-4-5-6-3 | 1-2-7-8-4-5-6-3 |
| Compression ratio | 9.5 to 1 | 10.0 to 1 | 10.0 to 1 | 10.0 to 1 | 10.0 to 1 |
| Number of mounting points | 3 | 3 | 3 | 4 | 4 |
| Taxable horsepower | 54.45 | 54.45 | 54.45 | 54.45 | 54.45 |
| Maximum horsepower | 250 @ 4,400 RPM | 300 @ 4,600 RPM | 300 @ 4,600 RPM | 300 @ 4,600 RPM | 300 @ 4,600 RPM |
| Maximum torque | 380 @ 2,400 RPM | 400 @ 3,200 RPM | 400 @ 3,200 RPM | 400 @ 3,200 RPM | 400 @ 3,200 RPM |
| Engine - Block or Crankcase | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Material | Special Alloy Cast Iron | Special Alloy Cast Iron | Special Alloy Cast Iron | Special Alloy Cast Iron | Special Alloy Cast Iron |
| Design | Deep-flange, Rib-reinforced | Deep-flange, Rib-reinforced | Deep-flange, Rib-reinforced | Deep-flange, Rib-reinforced | Deep-flange, Rib-reinforced |
| Engine - Camshaft | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Camshaft Material | Cast alloy iron | Cast alloy iron | Cast alloy iron | Cast alloy iron | Cast alloy iron |
| Bearing number and material | 5, Steel-backed Babbitt | 5, Steel-backed Babbitt | 5, Steel-backed Babbitt | 5, Steel-backed Babbitt | 5, Steel-backed Babbitt |
| Type and make of drive | Chain, Link Belt | Chain, Link Belt | Chain, Link Belt | Chain, Link Belt | Chain, Link Belt |
| Engine - Connecting Rods | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Material | High manganese alloy forged steel SAE 1141 | High manganese alloy forged steel SAE 1141 | High manganese alloy forged steel SAE 1141 | High manganese alloy forged steel SAE 1141 | High manganese alloy forged steel SAE 1141 |
| Bearing Material | Steel-backed Moraine 400 Aluminum | Steel-backed Moraine 400 Aluminum | Steel-backed Moraine 400 Aluminum | Steel-backed Moraine 400 Aluminum | Steel-backed Moraine 400 Aluminum |
| Rod length, center to center | 6.1" | 6.1" | 6.1" | 6.1" | 6.1" |
| Engine - Cooling System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Cooling System | Water Pump Pressure | Water Pump Pressure | Water Pump Pressure | Water Pump Pressure | Water Pump Pressure |
| Radiator Pressure Control Valve | 15 lbs. | 15 lbs. | 15 lbs. | 15 lbs. | 15 lbs. |
| Water Temperature Control | Thermostat and By-pass | Thermostat and By-pass | Thermostat and By-pass | Thermostat and By-pass | Thermostat and By-pass |
| Circulation starts to open at | 157-162 °F | 157-162 °F | 157-162 °F | 157-162 °F | 157-162 °F |
| Water pump type | Centrifugal | Centrifugal | Centrifugal | Centrifugal | Centrifugal |
| Water pump bearing type | Sealed, double row ball bearing | Sealed, double row ball bearing | Sealed, double row ball bearing | Sealed, double row ball bearing | Sealed, double row ball bearing |
| By-pass recirculation | Internal | Internal | Internal | Internal | Internal |
| Radiator core type | Tube and Center | Tube and Center | Tube and Center | Tube and Center | Tube and Center |
| Water all around cylinders | Yes | Yes | Yes | Yes | Yes |
| Number of fan blades | 4 | 4 | 4 | 4 | 4 |
| Fan diameter | 20" | 20" | 20" | 20" | 20" |
| Cooling system capacity - less heater | 16.5 qts. | 16.5 qts. | 16.5 qts. | 16.5 qts. | 16.5 qts. |
| Cooling system capacity - with heater | 18.0 qts. | 18.0 qts. | 18.0 qts. | 18.0 qts. | 18.0 qts. |
| Engine - Crankshaft | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Material | High Manganese alloy forged steel SAE 1046 | High Manganese alloy forged steel SAE 1046 | High Manganese alloy forged steel SAE 1046 | High Manganese alloy forged steel SAE 1046 | High Manganese alloy forged steel SAE 1046 |
| Weight | 58.0 pounds | 58.0 pounds | 58.0 pounds | 58.0 pounds | 58.0 pounds |
| Main bearing material | 4 front Moraine 400, rear Durex 100A | 4 front Moraine 400, rear Durex 100A | 4 front Moraine 400, rear Durex 100A | 4 front Moraine 400, rear Durex 100A | 4 front Moraine 400, rear Durex 100A |
| Main bearing journal diameter | 2.4985" | 2.4985" | 2.4985" | 2.4985" | 2.4985" |
| Engine - Exhaust System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Exhaust system type | Single with cross-over | Single with cross-over | Single with cross-over | Dual | Dual |
| Muffler Type | 2-stage Reverse Flow | 2-stage Reverse Flow | 2-stage Reverse Flow | 2-stage Reverse Flow with Resonators | 2-stage Reverse Flow with Resonators |
| Engine - Fuel System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Fuel tank capacity | 20 galons | 20 galons | 20 galons | 20 galons | 20 galons |
| Fuel pump type | Mechanical, inverted | Mechanical, inverted | Mechanical, inverted | Mechanical, inverted | Mechanical, inverted |
| Vacuum booster | Standard (on oil pump) | Standard (on oil pump) | Standard (on oil pump) | Standard (on oil pump) | Standard (on oil pump) |
| Fuel filter type and location | Glass Bowl between Fuel Pump and Carburetor | Glass Bowl between Fuel Pump and Carburetor | Glass Bowl between Fuel Pump and Carburetor | Glass Bowl between Fuel Pump and Carburetor | Glass Bowl between Fuel Pump and Carburetor |
| Carburetor type | 2-barrel Downdraft | 4-barrel Downdraft | 4-barrel Downdraft | 4-barrel Downdraft | 4-barrel Downdraft |
| Intake manifold heat control | Automatic | Automatic | Automatic | Automatic | Automatic |
| Automatic choke type | Integral | Integral | Integral | Integral | Integral |
| Standard air cleaner type | Heavy Duty with disposable filter | Heavy Duty with disposable filter | Heavy Duty with disposable filter | Heavy Duty with disposable filter | Heavy Duty with disposable filter |
| Engine - Lubrication System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Main bearing lubrication | Pressure | Pressure | Pressure | Pressure | Pressure |
| Connecting rod lubrication | Pressure | Pressure | Pressure | Pressure | Pressure |
| Piston pin lubrication | Splash | Splash | Splash | Splash | Splash |
| Camshaft lubrication | Pressure | Pressure | Pressure | Pressure | Pressure |
| Tappet lubrication | Pressure | Pressure | Pressure | Pressure | Pressure |
| Timing chain lubrication | Drip from front camshaft bearing | Drip from front camshaft bearing | Drip from front camshaft bearing | Drip from front camshaft bearing | Drip from front camshaft bearing |
| Cylinder wall lubrication | Splash and Nozzle | Splash and Nozzle | Splash and Nozzle | Splash and Nozzle | Splash and Nozzle |
| Oil pump type | Gear | Gear | Gear | Gear | Gear |
| Normal oil pressure | 40 lb. @ 1,600 rpm | 40 lb. @ 1,600 rpm | 40 lb. @ 1,600 rpm | 40 lb. @ 1,600 rpm | 40 lb. @ 1,600 rpm |
| Type oil intake | Stationary | Stationary | Stationary | Stationary | Stationary |
| Standard oil filter type | Full Flow | Full Flow | Full Flow | Full Flow | Full Flow |
| Capacity of oil reservoir - refill | 5 qts. | 5 qts. | 5 qts. | 5 qts. | 5 qts. |
| Engine - Pistons | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Material | Permanent-Mold Aluminum Alloy | Permanent-Mold Aluminum Alloy | Permanent-Mold Aluminum Alloy | Permanent-Mold Aluminum Alloy | Permanent-Mold Aluminum Alloy |
| Description and finish | Cam ground - Transverse Slot - Divorced Skirt | Cam ground - Transverse Slot - Divorced Skirt | Cam ground - Transverse Slot - Divorced Skirt | Cam ground - Transverse Slot - Divorced Skirt | Cam ground - Transverse Slot - Divorced Skirt |
| Weight (piston only) | 1.385 lbs. | 1.385 lbs. | 1.385 lbs. | 1.385 lbs. | 1.385 lbs. |
| Engine - Piston Rings | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Compression rings per cylinder | 2 | 2 | 2 | 2 | 2 |
| Compression ring material | Cast Iron - Lubrited | Cast Iron - Lubrited | Cast Iron - Lubrited | Cast Iron - Lubrited | Cast Iron - Lubrited |
| Oil rings per cylinder | 1 | 1 | 1 | 1 | 1 |
| Oil ring material | Steel | Steel | Steel | Steel | Steel |
| Number of rings above piston pin | 3 | 3 | 3 | 3 | 3 |
| Engine - Valve System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Hydraulic lifters | All Engines | All Engines | All Engines | All Engines | All Engines |
| Operating tappet clearance | None | None | None | None | None |
| Intake valve material | Nickel-Chrome Alloy Steel | Nickel-Chrome Alloy Steel | Nickel-Chrome Alloy Steel | Nickel-Chrome Alloy Steel | Nickel-Chrome Alloy Steel |
| Exhaust valve material | SIL-10 or 2155N | SIL-10 or 2155N | SIL-10 or 2155N | SIL-10 or 2155N | SIL-10 or 2155N |
| Intake and exhaust valve overall length | 4.704" | 4.704" | 4.704" | 4.704" | 4.704" |
| Intake valve head diameter | 1.875" | 1.875" | 1.875" | 1.875" | 1.875" |
| Exhaust valve head diameter | 1.437" | 1.437" | 1.437" | 1.437" | 1.437" |
| Intake and exhaust valve seat angle | 45 degrees | 45 degrees | 45 degrees | 45 degrees | 45 degrees |
| Intake valve lift | .423" | .423" | .423" | .423" | .423" |
| Exhaust valve lift | .423" | .423" | .423" | .423" | .423" |
| Electrical - Ignition System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Coil and distributor make | Delco Remy | Delco Remy | Delco Remy | Delco Remy | Delco Remy |
| Spark plug make and model | AC 44 | AC 44 | AC 44 | AC 44 | AC 44 |
| Spark plug gap | .030"-.035" | .030"-.035" | .030"-.035" | .030"-.035" | .030"-.035" |
| Spark plug protection | Neoprene Boot | Neoprene Boot | Neoprene Boot | Neoprene Boot | Neoprene Boot |
| Electrical supression | Distributor, Coil, Generator, Voltage Regulator | Distributor, Coil, Generator, Voltage Regulator | Distributor, Coil, Generator, Voltage Regulator | Distributor, Coil, Generator, Voltage Regulator | Distributor, Coil, Generator, Voltage Regulator |
| Electrical - Starting System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Starting motor make | Delco Remy | Delco Remy | Delco Remy | Delco Remy | Delco Remy |
| Engine cranking speed | Appr. 160 rpm | Appr. 160 rpm | Appr. 160 rpm | Appr. 160 rpm | Appr. 160 rpm |
| Motor control switch, 3-position | Selenoid | Selenoid | Selenoid | Selenoid | Selenoid |
| Motor starting procedure | Turn on ignition - Depress accelerator | Turn on ignition - Depress accelerator | Turn on ignition - Depress accelerator | Turn on ignition - Depress accelerator | Turn on ignition - Depress accelerator |
| Electrical - Supply System | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Battery make | Delco Remy | Delco Remy | Delco Remy | Delco Remy | Delco Remy |
| Battery voltage | 12-volt, 11-plate, 70 ampere-hours | 12-volt, 11-plate, 70 ampere-hours | 12-volt, 11-plate, 70 ampere-hours | 12-volt, 11-plate, 70 ampere-hours | 12-volt, 11-plate, 70 ampere-hours |
| Battery location | Left front fender skirt, under hood | Left front fender skirt, under hood | Left front fender skirt, under hood | Left front fender skirt, under hood | Left front fender skirt, under hood |
| Battery terminal grounded | Negative | Negative | Negative | Negative | Negative |
| Generator make | Delco Remy | Delco Remy | Delco Remy | Delco Remy | Delco Remy |
| Generator type | Shunt | Shunt | Shunt | Shunt | Shunt |
| Regulator make | Delco Remy | Delco Remy | Delco Remy | Delco Remy | Delco Remy |
| Regulator type | Voltage and Current Control | Voltage and Current Control | Voltage and Current Control | Voltage and Current Control | Voltage and Current Control |
| Electrical - Horns, Lights | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Dual horn type | Selenoid | Selenoid | Selenoid | Selenoid | Selenoid |
| Outside and instrument panel lighting | Unified single-switch control | Unified single-switch control | Unified single-switch control | Unified single-switch control | Unified single-switch control |
| Drive Units - Propeller Shaft | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Number and type | 2-Section enclosed in Torque Tube | 2-Section enclosed in Torque Tube | 2-Section enclosed in Torque Tube | 2-Section enclosed in Torque Tube | 2-Section enclosed in Torque Tube |
| Drive thrust taken through | Torque Tube | Torque Tube | Torque Tube | Torque Tube | Torque Tube |
| Torque thrust taken through | Torque Tube | Torque Tube | Torque Tube | Torque Tube | Torque Tube |
| Drive Units - Rear Axle | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Type and gearing | Semi-Floating, Overhung Pinion | Semi-Floating, Hypoid | Semi-Floating, Hypoid | Semi-Floating, Hypoid | Semi-Floating, Hypoid |
| Gear ratio, Synchromesh | 3.58 (43-12) | - | - | - | - |
| Gear ratio, Dynaflow | 3.23 (43-13) | 3.23 (43-13) | 3.23 (43-13) | 3.23 (43-13) | 3.23 (43-13) |
| Drive Units - Dynaflow Transmission | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Trade name | Variable Pitch Dynaflow | Variable Pitch Dynaflow | Variable Pitch Dynaflow | Flight Pitch Dynaflow | Flight Pitch Dynaflow |
| Transmission type | Torque Converter with Gears | Torque Converter with Gears | Torque Converter with Gears | Torque Converter with Gears | Torque Converter with Gears |
| Acceleration shifting | Stator blades shift to "performance" pitch past full throttle | Stator blades shift to "performance" pitch past full throttle | Stator blades shift to "performance" pitch past full throttle | Stator blades shift from low angle to high "performance" angle as throttle is advanced | Stator blades shift from low angle to high "performance" angle as throttle is advanced |
| Governor shifting involuntary | No | No | No | No | No |
| Manual downshift through range selector | Not recommended over 40 mph | Not recommended over 40 mph | Not recommended over 40 mph | Not recommended over 45 mph | Not recommended over 45 mph |
| Mechanical lockup in direct drive | None | None | None | None | None |
| Type of transmission cooling | Water-cooled | Water-cooled | Water-cooled | Water-cooled | Water-cooled |
| Total oil capacity | 24 | 25 | 25 | 25 | 25 |
| Drive Units - Synchromesh Transmission | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Clutch make and type | Long Mfg., dry plate | - | - | - | - |
| Clutch facing material | Woven | - | - | - | - |
| Clutch inside and outside diameters | 7.0-11.0" | - | - | - | - |
| Total effective facing area | 113.0 sq. in. | - | - | - | - |
| Number of forward speeds | 3 | - | - | - | - |
| Helical gears | In all speeds | - | - | - | - |
| Lubricant capacity | 2.5 | - | - | - | - |
| Chassis - Brakes, Service & Parking | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Service brake type | Hydraulic - Internal Expanding | Hydraulic - Internal Expanding | Hydraulic - Internal Expanding | Hydraulic - Internal Expanding | Hydraulic - Internal Expanding |
| Power brake with vacuum booster | Optional all Series with Dynaflow - Std. on 75-700 | Optional all Series with Dynaflow - Std. on 75-700 | Optional all Series with Dynaflow - Std. on 75-700 | Optional all Series with Dynaflow - Std. on 75-700 | Optional all Series with Dynaflow - Std. on 75-700 |
| Brake drum material | Cast iron | Aluminum, front - cast iron, rear | Aluminum, front - cast iron, rear | Aluminum, front - cast iron, rear | Aluminum, front - cast iron, rear |
| Brake drum diameter, front and rear | 12.02" | 12.02" | 12.02" | 12.02" | 12.02" |
| Brake lining material | Molded Extruded | Molded Extruded | Molded Extruded | Molded Extruded | Molded Extruded |
| Brake lining length, width and thickness, Primary front | 10.040" x 2.50 x .265 | 10.040" x 2.50 x .265 | 10.040" x 2.50 x .265 | 10.040" x 2.50 x .265 | 10.040" x 2.50 x .265 |
| Brake lining length, width and thickness, Primary rear | 10.040" x 2.25 x .265 | 10.040" x 2.25 x .265 | 10.040" x 2.25 x .265 | 10.040" x 2.25 x .265 | 10.040" x 2.25 x .265 |
| Brake lining length, width and thickness, Secondary front | 12.959" x 2.50 x .265 | 12.959" x 2.50 x .265 | 12.959" x 2.50 x .265 | 12.959" x 2.50 x .265 | 12.959" x 2.50 x .265 |
| Brake lining length, width and thickness, Secondary rear | 12.959" x 2.25 x .187 | 12.959" x 2.25 x .187 | 12.959" x 2.25 x .187 | 12.959" x 2.25 x .187 | 12.959" x 2.25 x .187 |
| Parking brake operates through | Rear service shoes | Rear service shoes | Rear service shoes | Rear service shoes | Rear service shoes |
| Parking brake is set through | Foot pedal at left | Foot pedal at left | Foot pedal at left | Foot pedal at left | Foot pedal at left |
| Parking brake is released through | Lever under left side of instrument panel | Lever under left side of instrument panel | Lever under left side of instrument panel | Lever under left side of instrument panel | Lever under left side of instrument panel |
| Parking brake warning light, automatic | Optional | Optional | Optional | Standard | Standard |
| Chassis - Frame | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Type and description | Channel Side Bars, X-reinforced, 5 cross-members | Channel Side Bars, X-reinforced, 5 cross-members | Channel Side Bars, X-reinforced, 5 cross-members | Channel Side Bars, X-reinforced, 5 cross-members | Channel Side Bars, X-reinforced, 5 cross-members |
| Chassis - Steering | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Lmited Series |
| Steering type used | Mechanical**** | Mechanical**** | Power | Power | Power |
| Steering wheel diameter | 17.5" | 17.5" | 17.5" | 17.5" | 17.5" |
| Steering gear type, both mechanical and power | Recirculating ball nut | Recirculating ball nut | Recirculating ball nut | Recirculating ball nut | Recirculating ball nut |
| Manual steering gear ratio | 28.8:1 | - | - | - | - |
| Power steering gear ratio | 19.7:1 | 19.7:1 | 19.7:1 | 19.7:1 | 19.7:1 |
| Turn diameter, curb to curb | 43.2' | 43.2' | 44.5' | 44.5' | 44.5' |
| Steering linkage type | Parallelogram, double-anchored | Parallelogram, double-anchored | Parallelogram, double-anchored | Parallelogram, double-anchored | Parallelogram, double-anchored |
| Linkage tie rods | Two, Transverse | Two, Transverse | Two, Transverse | Two, Transverse | Two, Transverse |
| Chassis - Standard Suspension, Front | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Front suspension type | Ball Joint with Coil Springs | Ball Joint with Coil Springs | Ball Joint with Coil Springs | Ball Joint with Coil Springs | Ball Joint with Coil Springs |
| Front coil spring material | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 |
| Shock absorbers | Direct Type, outboard mounted | Direct Type, outboard mounted | Direct Type, outboard mounted | Direct Type, outboard mounted | Direct Type, outboard mounted |
| Front stabilizer | Link type mounted in rubber | Link type mounted in rubber | Link type mounted in rubber | Link type mounted in rubber | Link type mounted in rubber |
| Chassis - Standard Suspension, Rear | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Rear suspension type | Coil Springing, Drive and Torque taken through Torque Tube | Coil Springing, Drive and Torque taken through Torque Tube | Coil Springing, Drive and Torque taken through Torque Tube | Coil Springing, Drive and Torque taken through Torque Tube | Coil Springing, Drive and Torque taken through Torque Tube |
| Rear coil spring material | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 | High Carbon Silicon Manganese Steel SAE 9260 |
| Shock absorbers | Direct Type, outboard mounted | Direct Type, outboard mounted | Direct Type, outboard mounted | Direct Type, outboard mounted | Direct Type, outboard mounted |
| Rear sidesway control | Tubular steel radius rod mounted in rubber | Tubular steel radius rod mounted in rubber | Tubular steel radius rod mounted in rubber | Tubular steel radius rod mounted in rubber | Tubular steel radius rod mounted in rubber |
| Chassis - Air Poise Suspension | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Suspension type | Modified Closed Compression Air System | Modified Closed Compression Air System | Modified Closed Compression Air System | Modified Closed Compression Air System | Modified Closed Compression Air System |
| Compressor type | Piston-type, engine-driven | Piston-type, engine-driven | Piston-type, engine-driven | Piston-type, engine-driven | Piston-type, engine-driven |
| Compressor capacity | 290 pounds per sq. in. | 290 pounds per sq. in. | 290 pounds per sq. in. | 290 pounds per sq. in. | 290 pounds per sq. in. |
| Storage capacity | 820.0 cui | 820.0 cui | 820.0 cui | 820.0 cui | 820.0 cui |
| Suplly-line pressure | 125 pounds per sq. in. | 125 pounds per sq. in. | 125 pounds per sq. in. | 125 pounds per sq. in. | 125 pounds per sq. in. |
| Valve type | Height control, lift control, pressure control | Height control, lift control, pressure control | Height control, lift control, pressure control | Height control, lift control, pressure control | Height control, lift control, pressure control |
| Unit volume, front | 300 cui per wheel | 300 cui per wheel | 300 cui per wheel | 300 cui per wheel | 300 cui per wheel |
| Unit volume, rear | 235 cui per wheel | 235 cui per wheel | 235 cui per wheel | 235 cui per wheel | 235 cui per wheel |
| Chassis - Wheels and Tires | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Wheel type | Disc | Disc | Disc | Disc | Disc |
| Wheel size | 15 x 5.50 | 15 x 6.00 | 15 x 6.00 | 15 x 6.00 | 15 x 6.00 |
| Tire type | Tubeless | Tubeless | Tubeless | Tubeless | Tubeless |
| Tire size | 7.10-15***** | 7.60-15 | 7.60-15 | 8.00-15 | 8.00-15 |
| Tire size Models 49, 49D, 46C | 7.60-15 | - | - | - | - |
| Tire revs. per mile at 30 mph | 750 | 735 | 735 | 723 | 723 |
| Tire pressure, front and rear, cold | 24 | 24 | 24 | 24 | 24 |
| Visibility - Glass Area | Special Series | Century Series | Super Series | Roadmaster Series | Roadmaster Limited Series |
| Windshield (4-door riviera) | 1,172.9 sq. in. | 1,172.9 sq. in. | 1,180.4 sq. in. | 1,347.0sq. in. | 1,347.0sq. in. |
| Total area (4-door riviera) | 3,500.1 sq. in. | 3,500.1 sq. in. | 3,247.0 sq. in. | 3,646.6 sq. in. | 3,646.6 sq. in. |
| Windshield wiper make and type | Trico, Vacuum, Wide-Angle | Trico, Vacuum, Wide-Angle | Trico, Vacuum, Wide-Angle | Trico, Vacuum, Wide-Angle | Trico, Vacuum, Wide-Angle |