Engine Specifications
GENERAL SPECIFICATIONS
| Year | Displ. Cu. Ins. | Carburetor | HP at RPM | Torque (Ft. Lbs. at RPM) | Compr. Ratio | Bore | Stroke |
|---|---|---|---|---|---|---|---|
| 1980 | 305" | 2-Bbl. | ..... | ..... | 8.51:1 | 3.736" | 3.480" |
| 350" | 4-Bbl. | ..... | ..... | 8.5:1 | 4.000 | 3.480" | |
| 400" | 4-Bbl. | ..... | ..... | 8.5:1 | 4.125" | 3.750" |
VALVES
| Engine & Valve | Head Diam. | Face Angle | Seat Angle | Seat Width | Stem Diameter | Stem Clearance | Valve Lift | |
|---|---|---|---|---|---|---|---|---|
| 305" & 350" & | ||||||||
| Int. | 1.940" | 45° | 46° | .031-.063" | .3410-.3417" | .0010-.0027" | ..... | |
| Exh. | 1.500" | 45° | 46° | .063-.094" | .3410-.3417" | .0010-.0027" | ..... | |
| 400" | ||||||||
| Int. | 1.940" | 45° | 46° | .031-.063" | .3410-.3417" | .0010-.0027" | ..... | |
| Exh. | 1.500" | 45° | 46° | .063-.094" | .3410-.3417" | .0012-.0029" | ..... | |
PISTONS, PINS, RINGS
| Engine | PISTONS | PINS | RINGS | |||||
|---|---|---|---|---|---|---|---|---|
| Clearance | Piston Fit | Rod Fit (1) | Rings | End Gap | Side Clearance | |||
| 305" & 350" | .0007-.0017" | .00025-.00035" | .0008-.0016" | 1 | .010-.020" | .0012-.0032" | ||
| 2 | .010-.025" | .0012-.0032" | ||||||
| 3 | .015-.055" | .002-.007" | ||||||
| 400" | .0014-.0024" | .00025-.00035" | .0008-.0016" | 1 | .010-.020" | .0012-.0032" | ||
| 2 | .010-.025" | .0012-.0032" | ||||||
| 3 | .015-.055" | .002-.007" | ||||||
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CRANKSHAFT MAIN & CONNECTING ROD BEARINGS
| Engine | MAIN BEARINGS | CONNECTING ROD BEARINGS | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Journal Diam. | Clearance | Thrust Bearing | Crankshaft End Play | Journal Diam. | Clearance | Side Play | |||||||||
| 305" & 350" | (1) 2.4484-2.4493" (2)2.4481-2.4490" (3)2.4479-2.4488" (4)2.6484-2.6493" (3)2.6479-2.6488" |
(1).0008-.0020" (2).0011-.0023" (1).0017-.0032" (1).0008-.0020" (2).0011-.0023" (3).0017-.0032" |
No. 5 | .002-.006" | 2.0988-2.0998" | .0013-.0035" | .008-.014" | ||||||||
| 400" | No. 5 | .002-.006" | 2.0988-2.0998" | .0013-.0035" | .008-.014" | ||||||||||
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VALVE SPRINGS
| Engine | Free Length | PRESSURE (LBS.) | ||
|---|---|---|---|---|
| Valve Closed | Valve Open | |||
| ALL | ||||
| Int. | 2.03" | 76-84@1.70" | 194-206@1.25" | |
| Exh. | 2.03" | 76-84@1.61" | 194-206@1.16" | |
CAMSHAFT
| Engine | Journal Diam. | Clearance | Lobe Lift | |
|---|---|---|---|---|
| 305" | 1.8682-1.8692" | ..... | ||
| Int. | .2484" | |||
| Exh. | .2667" | |||
| 350" | 1.8682-1.8692" | ..... | ||
| Int. | .2600" | |||
| Exh. | .2733" | |||
| 400" | 1.9482-1.9492" | ..... | ||
| Int. | .2600" | |||
| Exh. | .2733" | |||