V8 Engine

General
Displacement			304 cu in
Cylinder Numbering	(viewed from radiator, 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
Compression Pressure			140 psi
Maximum Variation Between Cylinders			20 psi
Oil Pressure
	600 rpm		13 psi
	1600 rpm and above		37 psi minimum
			75psi max.

Cylinder Bore
Taper Limit		0.005 in
Out-of-Round Limit		0.003 in
Deck Warpage Limit		0.008 in

Pistons and Rings
Piston-to-Cylinder Bore Clearance
	Standard		0.0010 to 0.0018 in
	Preferred		0.0014 in
Piston Ring Side Clearance
	Top Ring
		Standard	0.0015 to 0.0035 in
		Preferred	0.0015 in
	2nd Ring
		Standard	0.0015 to 0.003 in
		Preferred	0.0015 in
	Oil Ring		0.010 to 0.025 in
Piston Ring End Gap
	Standard		0.010 to 0.020 in
	Preferred		0.010 to 0.012 in
	Oil Ring		0.010 to 0.025 in
Piston Pin-to-Rod Clearance			Press fit
Piston Pin-to-Bore Clearance
	Standard		0.0003 to 0.0005 in
	Preferred		0.0005 in

Crankshaft and Flywheel
Main Journal Diameter
	1, 2, 3 and 4	2.7474 to 2.7489 in
	Rear Main (5)	2.7464 to 2.7479 in
Main Bearing Oil Clearance
	1, 2, 3 and 4
	Standard	0.001 to 0.003 in
	Preferred	0.0017 to 0.0020 in
	Rear Main (5)
	Standard	0.002 to 0.004 in
	Preferred	0.0025 to 0.003 in
Connecting Rod Journal
	Diameter	2.0934 to 2.0955 in
	Taper Limit	0.0005 in
	Out-of-Round	0.0005 in
Connecting Rod Bearing Oil Clearance
	Standard	0.001 to 0.003 in
	Preferred	0.0020 to 0.0025 in
Connecting Rod End Play		0.006 to 0.0018 in
Crankshaft End Play		0.003 to 0.008 in

Camshaft
Bearing Journal Diameter
	Number 1	2.1195 to 2.1205 in
	Number 2	2.0895 to 2.0905 in
	Number 3	2.0595 to 2.0605 in
	Number 4	2.0295 to 2.0305 in
	Number 5	1.9995 to 2.0005 in
Bearing Oil Clearance
	Standard	0.001 to 0.003 in
	Preferred	0.0017 to 0.0020 in
Lobe Lift		0.266 in
End Play		Zero
Timing Chain Total Allowable Deflection		7/8 in

Cylinder Head and Valve Train
Head Warpage Limit		0.008 in max.
Intake Valve Seat Angle		30º
Exhaust Valve Seat Angle		44.5º
Intake Valve Seat Width		0.040 to 0.060 in
Valve Seat Runout Limit		0.0025 in max.
Intake Valve Face Angle		29º
Exhaust Valve Face Angle		44º
Valve Stem Diameter		0.3715 to 0.3725 in
Valve Guide Diameter		0.3735 to 0.3745 in
Valve Stem-to-Guide Clearance		0.001 to 0.003 in
Valve Margin Width		1/32 in minimum
Valve Lifter Type		Hydraulic
Lifter Diameter		0.9040 to 0.9045 in
Lifter Bore Diameter		0.9055 to 0.9065 in
Lifter-to-Bore Clearance		0.001 to 0.0025 in

Oil Pump
Gear End Clearance			0.002 to 0.006 in
Gear-to-Body Clearance			0.005 to 0.0025 in
Oil Pressure Relief Valve Opening Pressure			75 psi

Oversize and Undersize Component Code Letter Definition
Code Letter
	B	Cylinder bore	0.010 in oversize
	M	Main bearing	0.010 in undersize
	F	Connecting rod bearing	0.010 in undersize
	PM	Maind and connecting rod bearing	0.010 in undersize
	C	Camshaft bearing bores	0.010 in oversize

Torque Specifications		FT-Lbs	Nm
Camshaft Gear Screw		30	41
Carburetor Adapter		12 to 15	16 to 20
Carburetor Mounting Nuts		12 to 15	16 to 20
Connecting Rod Nuts
	1972 through 1975	28	38
	1976 through 1983	33	45
Crankshaft Pulley-to-Damper Bolts		17 to 28	24 to 38
Cylinder Head Bolts		110	149
Driveplate-to-Torque Converter Bolts		22	30
Exhaust Manifold Bolts
	3/8 in	25	34
	5/16 in	15	20
Exhaust Pipe-to-Manifold Bolts		15 to 25	20 to 34
Fan and Hub Assembly		12 to 25	16 to 34
Flywheel/Driveplate-to-Crankshaft Bolts		105	142
Intake Manifold		43	58
Main Bearing Cap Bolts		100	136
Oil Pan Screws
	1/4 in	5 to 9	7 to 12
	5/16 in	9 to 13	12 to 18
Oil Pump Cover		4.5	6.0
Oil Relief Valve Cap		28	38
Rocker Arm Bolt		16 to 26	22 to 35
Spark Plugs		22 to 33	30 to 45
Starter Motor Bolts		13 to 25	18 to 34
Thermostat Housing Bolts		10 to 18	14 to 24
Timing Chain Cover-to-Block Bolts		18 to 33	24 to 45
Vibration Damper Bolts*
	1972 through 1975	55	76
	1976 and 1978	80	108
	1977 and 1979 through 1983	90	122
Water Pump Bolts		4 to 5	5 to 6

*Note:The vibration damper bolt on 1978 through 1983 models should be lubricated before installation.