Chevrolet 10 Series 1970 Service Manual page 655

Engine Description
and Availability
250 Cu. In. - 155 HP L-6
250 Cu. In. - 155 HP L-6
292 Cu. In. - 170 HP L-6
292 Cu. In. - 170 HP L-6
307 Cu. In. - 200 HP V-8
307 Cu. In. - 200 HP V-8
350 Cu. In. - 255 HP V-8
RPO LS-9
350 Cu. In. - 255 HP V-8
RPO LS-9
350 Cu. In. - 215 HP V-8
50 Series - Governed @
4000 rpm
350 Cu. In. - 215 HP V-8
CE400
366 Cu. In. - 235 HP V-8
RPO L86, 427 Cu. In.
260 HP RPO L43 Governed
@ 4000 rpm
400 Cu. In. - 310 HP V-8
RPO L47
*In Neutral for Manual Transmissions, In D rive for Automatic Transmissions.
DISTRIBUTORS
Centrifugal
Ignition
Advance
Distributor
(Crank
(Product
Degrees @
Part No.)
Engine RPM
C-4686
0 @ 900 RPM
1110463
9° @ 1220 RPM
21° @ 1950 RPM
32° @ 4200 RPM
C-4672
@
1110464 0 900 RPM
8° @ 1400 RPM
17° @ 1950 RPM
28° @ 4200 RPM
C-4687
1110468 0 @ 900 R PM
11° @ 1300 RPM
23° @ 2000 RPM
32° @ 4200 RPM
C-4688
1110467 0 @ 900 RPM
9° @ 1200 RPM
23° @ 2000 RPM
32° @ 4200 RPM
C-4680
0 @ 1000 RPM
1111481
10° @ 1600 R PM
28° @ 4300 RPM
C-4753
0 @ 800 R PM
1110912
2° @ 1200 R PM
12° @ 2200 RPM
24° @ 4300 RPM
C-4741
0 @ 870 RPM
1111955
2° @ 1130 RPM
17° @ 2100 RPM
28° @ 4500 RPM
C-4489
1111500 0 @ 900 RPM
10° @ 1500 RPM
15° @ 2000 RPM
28° @ 4200 RPM
C-4726
@
1111338 0 900 R PM
9° @ 1250 RPM
(Special
Gear) 17° @ 2000 RPM
32° @ 5000 RPM
C-4726
0 @ 750 RPM
1111495
2° @ 1050 RPM
14° @ 2000 RPM
28° @ 4100 RPM
C-4728
1111337 0 @ 900 R PM
29° @ 2800 R PM
(Special
34° @ 4400 RPM
Gear)
C-4489
1111500 0 @ 900 RPM
@
10° 1500 RPM
15° @ 2000 RPM
28° @ 4200 RPM
Vacuum
Point
Advance
Dwell
(In Crank
Setting
Degrees)
C-3912
0 @ 7" Hg. 31°-34°
23° @ 16" Hg.
C-3912
0 @ 7" Hg. 31°-34°
23° @ 16" Hg.
C-3912
31°-34°
0 @ 7" Hg.
23° @ 16" Hg.
C-3912
31°-34°
0 @ 7" Hg.
@
23° 16" Hg.
C-3064
0 @ 6" Hg. 29°-31°
15° @ 12" Hg.
C-3954
0 @ 8" Hg. 29°-31°
20° @ 17" Hg.
C-3968
0 @ 7" Hg. 29°-31°
24° @ 17" Hg.
C-3036
0 @ 8" Hg. 29°-31°
15° @ 15.5" Hg.
29°-31°
None
C-3036
@
0 8" Hg. 29°-31°
15° @ 15.5" Hg.
29°-31°
None
C-3036
0 @ 8" Hg. 29°-31°
15° @ 15.5" Hg.
SPECIFICATIONS 15
Ignition
Original
Timing
Equipment
BTDC
Trans.
at Spark
Plug
Engine
Idle
Manual R46T
TDC
R46T
4° BTDC Automatic
R44T
4° BTDC Automatic
TDC Manual R44T
2° BTDC Automatic R45
8° BTDC Automatic R45
R44
4° BTDC Automatic
TDC Manual R44
4° BTDC Manual R44
R44
4° BTDC Manual
Manual CR42N
6° BTDC
4° BTDC A ll R44T
CHEVROLET TRUCK SERVICE MANUAL