Pontiac FIREBIRD 1972 Service Manual page 614

6-102 1972 PONTIAC SERVICE MANUAL
SPECIFICATIONS V-8 ENGINE (EXCEPT 307 ENGINE)
Type
..................................................
90" V-8 O.H. Valve
Bore and Stroke
350 cu. in.
............................................
3.88"
x
?.75"
400 cu. in.
............................................
4.12"
X
3.75"
455 cu. in.
............................................
4.15"
X
4.21"
Compression Ratio
350 cu. in., 2-Bbl.
..................................................
8.0
400 cu. in., 2-Bbl.
..................................................
8.2
455 cu. in., 2-Bbl.
.................................................
8.2
400 cu. in., Q'Jet
....................................................
8.2
455 cu. in., Q'Jet
................................................
8.2
455 H.O. cu. in., Q'Jet
..........................................
8.4
Compression Pressure at Cranking Speed
(Wide Open Throttle)
350, 400 and 455
....
120-160 PSI @ 155-175 RPM
Car-Engine Serial No. Location
......................
Front Face of Right Cylinder Bank
Production Engine No. Location
......................
Front Face of Right Cylinder Bank
Cylinder Nos.-Front to Rear
Left Bank
.......................................................
1-3-5-7
Right Bank
......................................................
2-4-6-8
Firing Order
............................................
1-8-4-3-6-5-7-2
Measurement Taken At
........................
Top of Skirt
Clearance in Cylinder
........................
.0025"
-
.0033"
PISTON RINGS
Compression Rings
....
Two
-
Cast Iron Reverse Twist,
Barrel Face (upper), and Taper Face (lower)
Material
Upper
....................................
Channel Moly Filled
Lower
350, 400 and 455 2 Bbl.
....................
Tin-plated
400 and 455 4 Bbl.
.........
!
Channel Moly Filled
Ring Gap
Upper
350 and 400
................................................
.019"
455
..............................................................
,021"
Lower
.............................................................
.015"
Side Clearance
......................................
.0015"
-
.005"
Oil Ring
........................................................
Three Piece
Material
..................................
Rails (2) Chrome-Plated Steel
..................
Expander (All exc. 350)
Stainless Steel
350
..................................................
Carbon Steel
............................................................
Ring Gap .035"
.
......................................
Side Clearance .0015" .005"
CYLINDER BLOCK
PISTON PIN
Material
............................................
Alloy Cast Iron
Installation Angle
B Series
123.5" W.B
..................................................
3.4"
126" W.B.
..................................................
3.1"
................................................
Station Wagon 3.6"
G Series
..................................
4.7" (MT), 4.8" (AT)
..................................
A Series 4.7" (MT), 4.8" (AT)
..............................................................
F Series 2.7"
CYLINDER HEADS
Material
.........................................
Alloy Cast Iron
Combustion Chamber
............................
Quench Type
Fully Machined
PISTONS
Material
..............
Cast Aluminum Alloy, Tin-plated
Type
............
Cam and Contour Ground-Slipper Skirt
Material
............................
Extruded SAE 1016 Steel
Diameter
..........................................................
.9802"
Wall Thickness
.................................................
.38"
Length
................................................................
3.25"
Fit in Piston
......................................
.0005"
-
.0007"
Fit in Rod
..........................................................
Press
CONNECTING ROD
Material
....................................................
Arma Steel
Weight (oz.)
......................................................
3 1.7
Length (Center to Center)
..............................
6.625"
Bearings
Length
......................
:
....................................
.88"
Clearance
........................................
.0005"
-
.0025"
Material
350 and 400 2 Bbl.
....................
Moraine 100-A
....................
400
4 Bbl. and 455 Moraine 400-A
End Play on Crankshaft
(Total for Two)
..............................
.012"
-
.017"