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301-350-400 V8 ENGINE VI CODES Y-P-Z
6A5-25
Fully Machined
PISTONS
Material
......................
Cast Aluminum Alloy, Tin-plated
Type
..................
Cam and Contour Ground-Slipper Skirt
Measurement Taken At
................................
Top of Skirt
Clearance in Cylinder
..............................
.0025"
-
.0033"
NOTE: Cylinder block and pistons must be at 70" to
80°F. to 23.2"C.) at time of fitting pistons to cylinder.
PISTON RINGS
Compression Rings
...........
Two
-
Cast Iron Reverse Twist,
Barrel Face (upper), and Taper Face (lower)
Material
Upper
...........................................
Channel Moly Filled
Lower
............................................................
Tin Plated
Ring Gap
Upper
........................................................
.010"-.020"
Lower
...........................................................
.01OW-.020"
Side Clearance
.............................................
.0015"-.0035"
Oil Ring
..............................................................
Three Piece
Material
Steel-Chrome
Ring Gap
...............................................................
.035"
Side Clearance.
............................................
.00 1 5" -.0035"
PISTON PIN
Material
....................................
Extruded SAE 1016 Steel
Diameter (301 Engine)
.............................................
.927"
Diameter (3 50-400).
..................................................
.980"
................................................
Length (301 Engine)
3. 00"
Length (350-400 Engine)
.........................................
3.25"
Fit in Piston (301 Engine)
.......................
.0002"
-
.0004"
.............................
Fit in Piston (350-400)
,0003"
-
.0005"
Fit in Rod
................................................................
Press
CONNECTING ROD
Material
...........................................................
Arma Steel
Weight (301 Eingine
............................................
21.9 o&/
Weight (350-400 Engine)
.....................................
3 1.7 oz.
Length (Center to Center) (301 Engine)
...............
6.050"
Length (Center to Center) (350 Engine)
...............
6.625"
Length (Center to Center) (400 Engine)
...............
6.625"
Bearings
Clearance
..............................................
.0005"
-
.0025"
Material
................................................
Moraine 400-A
End Play on Crankshaft
(Total for Two) (301 Engine)
.....................
.006"-.022"
(350-400 Engine)
.........................................
,012"-.017"
VALVES
Material
Intake (301 Engine)
.................................
SAE 1541 Steel
Intake (350-400 Engine)
...............................
1541 Steel
Exhaust
.......................................................
2 1-2N Steel
Diameter of Head
Intake (301 Engine)
..............................................
1.72"
Intake (350-400)
....................................................
2.10"
Exhaust (301)
.......................................................
1.50"
Exhaust (350-400).
................................................
1.65 "
Overall Length
Intake (301)
...........................................................
5.07"
Intake (350-400)
....................................................
4.86"
........................................................
Exhaust (301)
5.07"
.................................................
Exhaust (350-400)
4.86"
........................................................
Diameter of Stem
.34"
Stem to Guide Clearance (301 Eng.)
..............................................................
Intake
.0010/.0027
...................................................
Top Exhaust
.0010/.0027
.............................................
Bottom Exhaust
.0020/.0037
.....................................
(350-400 Eng.) Intake
.0016-.0033
Stem to Guide Clearance
(350-400 Eng.
)
Exhaust
.............................
.0021"-.0038"
Valve Seat Angle
........................................................................
Intake
46"
......................................................................
Exhaust
46"
Valve Face Angle
Intake
........................................................................
45"
......................................................................
Exhaust
45"
CRANKSHAFT
........................................................
Material
Nodular Iron
................................................................
No. of Bearings
5
...................................
Main Bearing Type
Moraine 400-A
......................................................
Thrust Taken On
No. 4
.............................
Crankshaft Endplay
. . . . .
,003"
-
.009"
......................................................
Journal Diameter
3.00"
Main Bearing Clearance
.........................................................
All
.0004"
-
.002OU
................................
Crankpin Diameter (350-400)
2.25"
.........................................
Crankpin Diameter (301)
2.00
FLYWHEEL AND SPROCKETS
Flywheel
Material
Manual
.......................................................
Cast Iron
............................................
Automatic
Stamped Steel
No. of Teeth
..........................................................
166
Starter Motor Drive
.................................................................
No. of Teeth
9
Crankshaft Sprocket
...................................
Material
Hardened Sintered Iron
...............................................................
No. of Teeth
2 1
Camshaft Sprocket
Material
...................................
Heat Treated Cast Iron
...............................................................
No. of Teeth
42
..................
Timing Chain
Link Type
-
Single Side Guide
................................................................
No. of Links
60
CAMSHAFT
..................................
Material
Hardened Alloy Cast Iron
Bearings
Number
...................................................................
5
.............................................
Type
Steel Backed Babbitt
.........................................................
Diameter
-
All
1.9"
VALVE SYSTEM
Valve Lifter
...............................................................
Type
Hydraulic
Leak-Down Rate
All
.......................................
12-90 sec. Q 50 lb. load
Plunger Travel (For Gaging Purposes)
...............
.125"
Pushrod
Material
...............................
Ball Ended
-
Steel Tubing
.................................................
Length (301 Eng.)
8.12"
..........................................
Length (350-400 Eng.)
9.17"
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