Ford 428ci 11:1 Specs
Ford Ford 428ci · 4.132" × 3.984" · 11:1 engine specs: 428 ci (7L), 8-cylinder, 4.132" bore x 3.984" stroke, 11:1 compression.
Dimensions
| Displacement | 428 ci / 7 L |
|---|
| Bore | 4.132" |
|---|
| Stroke | 3.984" |
|---|
| Cylinders | 8 |
|---|
| Compression ratio | 11:1 |
|---|
| Rod length | 6.488" |
|---|
| Rod ratio | 1.629 |
|---|
| Bore/stroke ratio | 1.037 |
|---|
| Piston deck clearance | 0.008" |
|---|
Construction
| Induction | 1-4 |
|---|
| Advertised HP | 335 hp |
|---|
| Years | 1968–1970 |
|---|
What these numbers mean
| Bore/stroke character | 1.037 — square — bore and stroke are within 5%, a balanced compromise |
|---|
| Mean piston speed at 6,000 RPM | 3,984 ft/min — in the range typical of performance street engines |
|---|
| Rod ratio | 1.629 — moderate — the range most production V8s fall in |
|---|
| Displacement per cylinder | 53.5 ci |
|---|
| Static compression | 11:1 — high enough that pump premium or better is normally required |
|---|
Cylinder head
| Intake valve diameter | 2.097" |
|---|
| Exhaust valve diameter | 1.66" |
|---|
| Chamber volume | 68 cc |
|---|
| Rocker ratio | 1.73:1 |
|---|
| Lifter type | hydraulic |
|---|
Run the numbers for this engine
Each link opens the calculator with this engine's specs already filled in.
Variants sharing these dimensions (3)
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|
| 1968 | 335 hp | — |
| 1969 | 335 hp | — |
| 1970 | 335 hp | — |
Similar engines
Source: NHRA blueprints — nhra.net blueprints
← All Ford 428ci engines