Chevrolet 10 Series 1970 Service Manual page 651

E
Type
N
G
D isplacem ent
I
N
H orsepow er
E
Q
COM PRESSION
Standard
S P A R K Make &
Number
P L U G
Cold
Gap
D
Point D w ell
I
S
Point Gap
T
R
A rm Spring Tension
I
B
Condenser
U
T
Tim in g Syn.
O
< D
R
Auto.
Fan and P/S
D RIVE
A/C and A ir Comp.
B E L T
A ir Injection Pump
A IR C L E A N E R
V A L V E LASH
Syn.
ID L E
R P M
Auto.
P re s s u re in lbs.
F U E L
P U M P
Volum e
C R AN K C ASE V E N T IL A T IO N
(X) A t cranking speed, th rottle wide open—Maxim um variation, 20 lbs. between cylin d ers.
(2) At id le speed with vacuum advance line disconnected and plugged.
On Step Van v e h icles, use number two cylin d er and tim ing tab on bottom of co v e r.
(3) P A P E R E L E M E N T —S e rvic e at 12,000 m iles in itia lly —Check e v e ry 6,000 m iles th erea fter, until replaced.
P O L Y U R E T H A N E B A N D -S e r v ic e e v e ry 12,000 m iles.
O IL B A T H —Change o il at re g u la r engine o il change in tervals.
TUNE UP CHART
In Line
250 292 307
155 170 200
130 psi
A C -R 45
A C -R 4 4 T
A C -R 4 6 T
A C -R 4 3 T
A C -R 4 4 T AC -R 44
31°-34°
2° BTDC
TDC
4° BTD C 8° BTDC
50 lb. Min. 75 ± 5 lbs. (Used) 125 ± 5 lbs. (N ew ) Using Strand Tension Gauge
65 lb. Min. 95 ± 5 lbs. (Used) 140 ± 5 lbs. (N ew ) Using Strand Tension Gauge
50 lb. Min. 75 ± 5 lbs. (U sed) 125 ± 5 lbs. (N ew ) Using Strand Tension Gauge
H ydraulic - 1 turn down fro m z e r o lash
See "Tune Up)' Section fo r D etailed Idle R P M Settings
5 to 6-1/2
3-1/2 to 4-1/2
V8
350
215 255
150 psi
AC -R44 A C -C R 42N
AC -R 44
A C -R 43 AC -R 43
.035"
28°-32°
.016" (Used) .019" (New )
19-23 ounces
. 18-.23 m icrofarad
TDC 6° BTDC
4° BTDC
- 4° BTDC
< D
7 to 8-1/2 5 to 6-1/2
1 pint in 30-45 seconds
S ervice at 12,000 m iles
SPECIFICATIONS 11
396 427
366
310 260
235
A C -R 4 4 T A C -C R 42N
- A C -R 4 3 T -
4° BTDC 6° BTDC
-
- -
7 to 8-1/2 5 to 6-1/2
CHEVROLET TRUCK SERVICE MANUAL