Mercury 427 SOHC Specs
Mercury 427 SOHC engine specs: 427 ci (7L), 8-cylinder, 4.2283" bore x 3.7874" stroke, 12:1 compression.
Dimensions
| Displacement | 427 ci / 7 L |
|---|
| Bore | 4.2283" |
|---|
| Stroke | 3.7874" |
|---|
| Cylinders | 8 |
|---|
| Compression ratio | 12:1 |
|---|
| Bore/stroke ratio | 1.116 |
|---|
Construction
| Block material | cast iron |
|---|
| Head material | cast iron |
|---|
| Valvetrain | SOHC |
|---|
| Fuel type | gas |
|---|
| Advertised HP | 610 hp |
|---|
What these numbers mean
| Bore/stroke character | 1.116 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|
| Mean piston speed at 6,000 RPM | 3,787 ft/min — in the range typical of performance street engines |
|---|
| Displacement per cylinder | 53.4 ci |
|---|
| Static compression | 12:1 — high enough that pump premium or better is normally required |
|---|
Run the numbers for this engine
Each link opens the calculator with this engine's specs already filled in.
Vehicles (2)
- Mercury Comet
- Mercury Comet (drag racing)
Similar engines
← All FE engines