1971 Chevelle Miscellaneous Maintenance & Specifications

Engine Specifications
Carburetor
Engine Data		 6 Cyl Engine 8 Cyl Engine
250 cid 307 cid 350 cid 350 cid 402 cid 454 cid
1 bbl. 2 bbl. 2 bbl. 4 bbl. 4 bbl. 4 bbl.
Horsepower 145 @ 4200 200 @ 4600 245 @ 4800 270 @ 4800 300 @ 4800 365 @ 5600
Torque 230 @ 1600 300 @ 2400 350 @ 2800 260 @ 3200 400 @ 3200 465 @ 3200
Comp. Ratio 8.5:1 8.5:1 8.5:1 8.5:1 8.5:1 8.5:1
Bore 3.875 3.875 4.0 4.0 4.126 4.250
Stroke 3.53 3.25 3.48 3.48 3.766 4.0
Firing Order 1-5-3-6-2-4 1-8-4-3-6-5-7-2
             
Spark Plugs
250 L-6 Engine AC Type R-46TS
307 V-8 Engine AC Type R-45TS
350 V-8 Engine 2-bbl AC Type R-45TS
350 V-8 Engine 4-bbl AC Type R-44TS
402 V-8 Engine AC Type R-44TS
454 V-8 Engine AC Type R-43TS
   
Recommendations for Filters, P.C.V. Valves, etc.
Item Usage Recommendation
Engine Oil Filter All AC Type PF25
Engine Air Cleaner Element L-6
307 cid
307 cid, Malibu
350 cid
402 cid
454 cid		 AC Type A169CW
AC Type A169CW
AC Type 348C
AC Type 348C
AC Type A212CW
AC Type A212CW
Carburetor Fuel Filter All L-6 and Rochester 4 bbl. AC Type GF427
Positive Crankcase Ventilator Valve L6
All V8		 AC Type CV722C
AC Type CV736C
Crankcase Ventilation Filter All AC Type FB-59
Radiator Cap All AC Type RC-15
Thermostat All 195°
Cooling System 250 cid
307 V-8, 350 V-8
402 V-8
454 V-8		 12.5 qts
16 qts *
23 qts *
23 qts *
Transmission Fluid Powerglide
TH 350
TH 400		 9 qts
10 qts
11 qts
Fuel Tank All 19 gal
* with air conditioning, add 1 quart
     
FUSES AND CIRCUIT BREAKERS
The headlamp circuit is protected by a circuit breaker in the light switch. An overload on the breaker will cause the lamps to "flicker" on and off. If this condition develops, have your headlamp wiring checked immediately. Also, a special circuit breaker, mounted on the firewall, protects the power window, power seat, and power top circuits if vehicle is so equipped. Where current load is too heavy, the circuit breaker intermittently opens and closes protecting the circuit until the cause is found and eliminated.

Fuses, located in the Junction Block beneath the dash are:
Radio, TCS, Rear Defogger, Hydra-matic Downshift 10 Amp.
W/S Wiper 25 Amp.
Stop Lamps, Hazard Flasher 20 Amp.
Heater, A/C 25 Amp.
Directional Signal, Backup Lamps, Cruise Master, Side Marker Lamps, Blocking Relay (A/C) 20 Amp.
Instrument Lamps, Floor Shift Lamps 04 Amp.
Gauges, Instrument Panel Warning 10 Amp.
Clock, Courtesy Light, Lighter, And Diesel Control Decklid Lock, Glove Box and Dome Lamp 25 Amp.
Tail Lamps, License, and Side Marking Lamp 20 Amp.

An Air Conditioning high blower speed fuse, 30 amp. is located in an in-line fuse holder running from horn relay to Air Conditioning relay.

Fusible Links are incorporated into the wiring system. These are wires of such a gauge that they will fuse (or melt) before damage occurs to an entire wiring harness in the event of an electrical overload.

BULB SPECIFICATIONS
Replace with AC-Guide Lamps Candle
Power		 Number
Headlight Unit 60W (H)
50W (L)		 6014
Front Park and Directional Signal 32-3 1157NA
Front Fender Side Marker Lamp 2 194A
Rear Side Marker Lamp 2 194
Tail, Stop, and Rear Directional Signal 32-3 1157
License Plant Lamp 4 67
Back Up Lamps 32 1156
Courtesy Lamp 6 631
Dome Lamp 12 211 or 211-1
Instrument Illumination Lamp 2 194
High Beam Headlamp Indicator 2 194
Indicator Lamps
  Gen.
  Oil
  Temp. System
  Brake Warning
  Turn Signal
2
2
2
2
2
194
194
194
194
194
Heater or A/C Control Panel Lamp 1 1445
Rear Seat Courtesy 6 212 or 211-1
Glove Box Lamp 2 1893
Radio Dial Lamp 2 1816
Floor Mounted Console 2 1445
Underhood Lamp 15 93
Seat Separator Lamp 6 212-1
Map Light (Mirror) 4 563
Luggage Compartment 15 1003