Chevrolet 1988 Light Duty Truck Repair Manual page 417

All s p e cific atio n s are in M IL L IM E T E R S unless o th erw ise noted.
C R A N K S H A F T
D ia m e te r - 3 D o ts
D ia m e te r - 2 D o ts
Main D ia m e te r - 1 D ot
Journal Taper
O ut of R ound
M ain B earing C le a ran ce
C ra n ksh a ft End Play
D iam e te r — 2 Dots
D iam eter — 1 Dot
C ra n kp in
Taper
O ut of R ound
Rod B earing C learance
Rod S ide C learance
C A M S H A F T :
Lift
Jou rn a l D iam eter
J o u rn a l C learance
V A L V E SYS TE M :
Lifter
R ocker A rm Ratio
Intake
Valve Lash
E xhaust
Face A n g le (Intake & E xhaust)
S eat A n g le (Intake & E xhaust)
S eat R uno ut (Intake & E xhaust)
Intake
S eat W idth
E xhaust
Stem C learance
Free Length
Valve P ressure
S pring N @ mm
Installed height
Valve S pring Free Length
D am per A p p rox. # of C oils
SPECIFICATIONS
ENGINE SPECIFICATIONS (CONT.)
Intake
E xhaust
C losed
O pen
2.8 LITER V
67.241-67.249
67.249-67.257
67.257-67.265
0.005 (M axim um )
0.005 (M axim um )
0.041 -0.081
0.06-0.21
50.758-50.771
50.771-50.784
0.005 (M axim u m )
0.005 (M axim um )
0.035-0.095
0.16-0.64
6.65
6.94
47.44-47.49
0.026-0.101
H yd rau lic
1.50:1
O ne A nd O ne H alf Turns
Down From Zero Lash
4 5 °
0.05
1.25-1.50
1.60-1.90
0.026-0.068
48.5
391 @ 40
867 @ 30
40
47.2
4
6A2-29
-6
F-05525