SPECIFICATIONS
8
Displacement
Horsepower
VALVE SYSTEM:
Lifter
Rocker
Arm
Ratio
Valve Lash
Intake
Exhaust
Face Angle
(Int.
&
Exh.
Seat Angle
(Int. & Exh.)
Seat Runout
(Int. & Exh.)
Seat Width
Stem
Clearani
Valve
Spring
(Outer)
Valve
Spring
(Inner)
Damper
Intake
Exhaust
Production
Int.
Exh.
Service
Free Length
Pressure
lbs.
@
in.
Closed
Open
Installed Height
±1/32"
Free Length
Pressure
lbs.
@
in.
Closed
Open
Installed Height
±1/32"
Free Length
Approx,# of Coils
153
90
194
120
230
140
250
155
283
195
327
210
275
300
325
350
350
295
39e
325
350
427
385
390
400
425
435
1.75:1
Hydraulic
1.50:1
One
One
Mechanical
1.70:1
Turn Down From Zero Lash
Turn Down From Zero Lash
.022"*
.024"*
.024"*
.028"*
...••:•:••
••-•. , 45« •
46°**
.002"
(Max.)
1/32" - 1/16"
1/16" - 3/32"
.0015"-.0032"
.0010"
-.0027"
.0010"-.0027"
<0010It-.0025"
.0012
'-.0027"
Hi Limit Production
+ .001"
Intake
- .002"
Exhaust
2.08"
78-86
@
1.66"
170-180
@
1.26"
1.92"
54-64 @
170-184
@
1.33"
1.90"
1.66"
180-
192
@
1.27"
1
21/32
2.03"
.
. N.A. ' ' .
N.A."
1
5/32
2.11"
84-96
@
1.88"
210-
230
@
1.46"
2.09"
94-106
...©••
1.88"
303-327
@
1.38"
1
2.21"
69-81
@
1.88"
181-205
@
1.32"
7/8
N.A.
1.94tf
4
N.A.
N.A.
N.A.
N.A.
N.A.
1,94"
4
: •
1.94"-2.00"
3
3/4
2.12"
37-45
@
1.78"
92-110
@
1.22"
13/4
2.07'*-
1.95
»
4
1/3
2.09"
94-106
®
1.88"
303-327
@
1.38"
N.A.
.
N.A.
NJl.
1.94"-
2.00"
3 3/4
*Engine at operating temperature and running.
••Aluminum Heads 45°
CHEVROLET CHASSIS SERVICE MANUAL
