1968 AMA Specifications – Electrical

AMA Specifications-Passenger Car
— Electrical —

MODEL

Firebird 250 cu. in. Engines

Firebird 350 cu. in. Engines

Firebird 400 cu. in. Engines

Electrical – Supply System

Battery

Make and Model

Delco Y-55 (a)

Delco Y-59 (b)

Delco R-59 (b)

Voltage Rtg. & Total Plates

12 – 54

12 – 54

12 – 66

SAE Designation & Amp. Hr. Rtg.

17 MI-44 Amp. Hr.

2 SM-53 Amp. Hr.

2 SM-61 Amp. Hr.

Location

Under Hood -R.H. Side

Under Hood -L.H. Side

Terminal grounded

Negative

Generatoror Alternator

Make

Delco-Remy

Model

1100761 (c)

1100704 (d)

Type and rating

37 Amp. (e)

37 Amp. (e)

Output at engine idle (neutral)

5 – 10 Amps.

Ratio-Gen. to Cr.s rev.

2.74:1 (3.02:1 With A/C)

Regulator

Make

Delco-Remy

Model

1119515 (f)

Type

Regulating Contacts in Standard Type

Cutoutrelay

Closing voltage generator rpm

Cutout Relay Not Required

Reverse currentto open

Cutout Relay Not Required

Regulated

Voltage

13.8

Current

Alternator Self Regulating

Voltage test conditions

Temperature

125° F.

Load

10 Amps.

Other

Cycle Regulator Before Final Setting

Electrical – Starting System

Starting Motor

Make

Delco-Remy

Model

1108329

1108328

1108335

Rotation (driveend view)

Clockwise

Motor Control

Switch (solenoid, manual)

Solenoid

Starting Procedure

Place gearshift lever in neutral and depress clutch. *With cold engine depress accelerator pedal to floor and release. With warm engine hold accelerator pedal about halfway down, turn ignition key clockwise to engage starter, release key as soon as engine starts.

*Use neutral or park with automatic transmission. (No Clutch)

Motor Drive

Engagement type

Sliding Gear – Overrunning Clutch

Pinion meshes (front, rear)

Front

Number of teeth

Pinion

9

Flywheel

Manual

155

166

Auto.

155

166

Flywheel toothface width

Manual

0.41

0.40

Auto.

0.41

0.40

NOTES

(a) Delco R-59 used with A/C or H.D. battery option

(b) With regular fuel engine – Delco R-59 with prem. fuel engine or H.D. battery option

(c) 1100760 (55 amp.) with A/C.

(d) 1100700 (55 amp.) with A/C.

(e) Diode rectified, 3-phase alternating current.

(f) 1116368 transistor regulator optional.

MODEL

6 Cyl. Engines

350 Cu. In. V-8 Engines

400 Cu. In. V-8 Engines

Electrical – Ignition System

Type

Conventional – Std., Opt., N.A.

Standard

Transistorized – Std., Opt., N.A.

Not Offered

Other (specify)

—

Coil

Make

Delco-Remy

Model

1115290

1115288

Amps

Engine stopped

3.5

3.4

Engine idling

2.8

2.1

Distributor

Make

Delco-Remy

Model

(a)   (b)

(c)   (d)   (e)

1111449 (a1)(c1)

 

1111270 (b1)(c1)

Centifgal adv. inc/shaft degrees@engine rpm (nominal)

Start (rpm)

900   900

800   800   ???

1100   800

Intermediate points deg.@rpm

15-19

@

1250

 

12-16

@

1650

13-17

@

1950

 

8-12

@

2000

 

???

10-14 (d1)

@

2000

 

10-14 (d1)

@

2000

Max. deg. @rpm

26-30

@

4400

 

24-28

@

5000

22-26

@

4800

 

16-20

@

5000

 

???

18-22 (e1)

@

4600

 

18-22 (e1)

@

4600

Vacuum adv. inc/shaft degrees@ in. Hg. (nominal)

Start (in Hg.)

4 – 6   4 – 6

8 – 10   8 – 10   ???

8 – 10   10 – 12

Intermediate points, deg.@ in. Hg.

None

Max. deg. in. Hg.

15° @ 9.5 – 10.5

20° @ 15 – 17

20° @ 17 – 19   20° @ 15 – 17

Breaker gap (in.)

0.016

Cam angle (deg.)

31 – 34

28 – 32

28 – 32

Breaker arm tension (oz.)

19 – 23

Timing

Crankshaft deg.@rpm

TDC(f)  5° BTDC(g)

9° BTDC

9° BTDC

Mark location

On Balancer

On Crankshaft Pulley Hub

On Crankshaft Pulley Hub

SparkPlug

Make

AC

Model

AC 44N

AC 45S

AC 44S

Thread (mm)

14

Tightening torque (lb. ft.)

15 – 25

Gap

0.033 – 0.038

Cable

Conductor type

Carbonized Thread

Insulation type

Neoprene

Spark plug protector

Hypalon Boot

NOTES

(a) 1110430 used on 250 cu. in. 1-bbl. carb. engines

(a1) With manual transmission

(b) 1110431 used on 250 cu. in. 4-bbl. carb. engines with manual transmission – 1110449 with automatic transmission

(b1) With automatic transmission

(c) 1111281 used on 350 cu. in. 2-bbl. carb. engines

(c1) 1111941 on Ram Air II Engine Option

(d) 1111282 used on 350 cu. in. 4-bbl. with automatic transmission

(d1) 10-14 @ 2100 on Ram Air II Engine Option

(e) 1111447 used on 350 cu. in. 4-bbl. with manual transmission

(e1) 26-30 @ 6100 on Ram Air II Engine Option

(f) 250 cu. in. 1-bbl. carb. engines

(g) 250 cu. in. 4-bbl. carb. engines

??? Information is missing from my sheets. If you have the information, let me know.

Electrical – Suppression

Locations & type

 

Carbonized thread core secondary cables and engine to dash ground strap on all cars. Radio equiped cars have an additional to dash ground strap, a fender skirt to frame ground strap plus a condenser on the regulator and another on the coil.

MODEL

Firebird

Firebird Sprint

Firebird 350

Firebird H.O.

Firebird 400

Electrical – Instruments and Equipment

Speed-ometer

Type

Mechanical

Trip odometer (yes,no)

No

Charge indicator – type

Telltale Lamp

Temperature indicator – type

Telltale Lamp

Oil pressure indicator – type

Telltale Lamp

Fuel indicator – type

Electric Gage

Other

Optional instrument cluster with temperature, ammeter & oil pressure telltales replace with gauges plus a tachomter.

Wind-Shield wiper

Type – Standard

Two-Speed Electric

Type – Optional

None

Wind-Shieldwasher

Type – Standard

Electric – Pump Integral with Wiper Motor

Type – Optional

None

Horn

Type

Solenoid

Number used

1 Std. (a)

Amp. draw (each)

4.3 to 5.9 @ 12.5 V.

NOTES

(a) Second horn included with Custom Trim option

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