Table of Contents
Advertisement
6A4-34
1977 PONTIAC SERVICE MANUAL
CYLINDER BLOCK
Engine Type
.........................................................................................
90" V-Type
No
.
of Cylinders
.................................................................................................
8
Bore and Stroke
..................................................................
4.057"
x
3.385" (350)
4.351"
x
3.385" (403)
Piston Displacement
.................................................................
350 or 403 C.I.D.
Compression Ratio
...............................................................................
8.5. 1 (350)
8.5:l (403)
Firing Order
..................................................................................
1-8-4-3-6-5-7-2
Main Bearing Bore (I.D.)
.............................................................
2.687"
-
2.688"
CRANKSHAFT
Diameter-Main Bearing Journal
................................
2.4995"
.
2.4985" (2.3.4. 5)
2.4998"
.
2.4988" (1)
Width-Main Bearing Journal (with fillets)
No
.
1
.........................................................................................................
1.185"
NO
.
2
&
4
...............................................................................
1.156"
.
1.166"
NO
.
3
......................................................................................
1.1985"
.
2.0015"
No
.
5
.........................................................................................................
1.882"
Diameter-Connecting Rod Bearing Journal
.............................
2.1248
"
.
2.1238 "
Width-Connecting Rod Bearing (with fillets)
..............................
1.877"
-
1.887"
Length-Overall Crankshaft
........................................................................
26.470"
Diameter
.
Oil Holes in Crankshaft
.........................................................
1.250"
Clearance
.
Crankshaft End
.......................................................
1.0035"
-
.
0135"
M A I N BEARINGS
Bearing Clearance
.
Crankshaft 1.2.3.
&
4
.......................................
005"
..
021.
Bearing Clearance
.
(Vertical) 5
....................................................
0015.
. .
003 1 "
Width-Bearing Shell
No
.
1. 2 and 4
.............................................................................
970"
. .
980"
NO
.
3
..........................................................................................
1.193.
.
1.195"
No
.
5
.........................................................................................................
1.624.
CONNECTING RODS
Length-Center to Center
...................................................................
5.998/6.002"
Diameter-Connecting Rod Bore
...............................................
2.2495"
.
2.2500"
..
Diameter-Pin Bore
.........................................................................
9789"
9795"
Bearing Clearance
.
(Vertical)
.......................................................
0004"
..
0033"
Side Clearance
.
Big End
..................................................................
006"
. .
020"
Advertisement
Table of Contents
