Engine Specifications

GENERAL SPECIFICATIONS

Application		Specification
Displacement
Cubic Inches		307
Liters		5.0
Fuel System		4-Bbl.
HP @ RPM		140 @ 3600
Torque Ft. @ RPM		240 @ 1600
Compression Ratio		7.99:1
Bore		3.80" (96.5 mm)
Stroke		3.39" (86.0 mm)

PISTONS, PINS & RINGS SPECIFICATIONS

Application

In. (mm)

Piston Clearance

.0008-.0018 (.020-.046)

Piston Diameter

3.80 (96.5)

Pins

Diameter

.9804 (24.902)

Piston Fit ⁽¹⁾

.0003-.0005 (.008-.013)

Rod Fit

.0002-.0095 (.005-.241)

Rings

Ring No.'s 1 & 2

End Gap

.009-.019 (.23-.48)

Side Clearance

.0018-.0038 (.046-.097)

Ring No. 3 (Oil)

End Gap

.015-.055 (.38-1.40)

Side Clearance

.001-.005 (.03-.13)

⁽¹⁾	A loose fit at 70°F (21°C).

CRANKSHAFT MAIN & CONNECTING ROD BEARINGS SPECS

Application

In. (mm)

Crankshaft

Crankshaft End Play

.0035-.0135 (.089-.343)

Runout ⁽¹⁾

.002 (.005)

Journal Taper

.0002 (.005)

Journal Out-of-Round

.0002 (.005)

Main Bearings

Journal Diameter

2.499 (63.48)

Oil Clearance

No. 1-4

.0005-.0021 (.013-.053)

No. 5

.0015-.0031 (.038-.079)

Connecting Rod Bearings

Journal Diameter

2.124 (53.95)

Oil Clearance

.0004-.0033 (.010-.084)

⁽¹⁾	With crankshaft supported on front and rear journal.

CONNECTING ROD SPECIFICATIONS

Application	In. (mm)
Side Play	.0006-.020 (.15-.51)
Maximum Bend & Twist	N/A
Pin Bore Diameter	N/A
Large Bore Diameter	N/A
Center-to-Center Length	N/A

CYLINDER HEAD SPECIFICATIONS

Application

Specification

Maximum Cylinder Head Warp

Intake

⁽¹⁾

Exhaust

⁽¹⁾

Seat Angle

Intake

45°

Exhaust

31°

Maximum Runout

Intake

.002" (.051 mm)

Exhaust

.004" (.10 mm)

Seat Width

Intake

.037-.075" (.94-1.91 mm)

Exhaust

.05-.10" (1.3-2.5 mm)

Seat Bore Diameter

N/A

Valve Stem Oil Clearance

Intake

.001-.003" (.03-.08 mm)

Exhaust

.002-.003" (.05-.08 mm)

Valve Guide Inside Diameter

N/A

Valve Guide Bore

N/A

⁽¹⁾	No additional information available. Maximum amount of metal which can be machined from original surface is .0006" (.15 mm).

CYLINDER BLOCK SPECIFICATIONS

Application

In. (mm)

Maximum Block Warp

⁽¹⁾

Cylinder Bore

Standard Diameter

3.80 (96.5)

Maximum Taper

.0015 (.038)

Maximum Out-of-Round

.0015 (.038)

⁽¹⁾	No additional information available. Maximum amount of metal which can be machined off original block is .005"(.13 mm).

VALVES & VALVE SPRINGS SPECIFICATIONS

Application

Specification

Intake

Head Diameter

1.75" (44.5 mm)

Stem Diameter

.343" (8.71 mm)

Face Angle

44°

Minimum Margin

.025" (.64 mm)

Maximum Refinish

N/A

Free Length

1.96" (49.8 mm)

Out-Of-Square

N/A

Installed Height

N/A

Pressure ⁽¹⁾

Valve Closed

76-84 @ 1.67 (34-38 @ 42.4)

Valve Open

180-194 @ 1.27 (81-88 @ 32.3)

Exhaust

Head Diameter

1.50" (38.1 mm)

Stem Diameter

.342" (8.69 mm)

Face Angle

30°

Minimum Margin

.025" (.64 mm)

Maximum Refinish

N/A

Free Length

1.96" (49.8 mm)

Out-Of-Square

N/A

Installed Height

N/A

Pressure ⁽¹⁾

Valve Closed

76-84 @ 1.67 (34-38 @ 42.4)

Valve Open

180-194 @ 1.27 (81-88 @ 32.3)

⁽¹⁾	Lbs. @ In. (Kg @ mm).

CAMSHAFT SPECIFICATIONS

Application		In. (mm)
Journal Diameter
Journal No. 1		2.035-2.037 (51.69-51.74)
Journal No. 2		2.015-2.017 (51.18-51.23)
Journal No. 3		1.995-1.997 (50.67-50.72)
Journal No. 4		1.975-1.977 (50.17-50.22)
Journal No. 5		1.955-1.957 (49.66-49.71)
Oil Clearance		.002-.006 (.05-.15)
Bearing Bore		N/A
Runout		.002 (.05)
End Play		.006-.022 (.15-.56)
Lobe Lift
Intake		.247 (6.27)
Exhaust		.251 (6.38)
Lobe Height		N/A