Pontiac Ponti 1989 138 150HP Specs
Pontiac Ponti 1989 138 150HP engine specs: 138 ci (2.3L), 4-cylinder, 3.625" bore x 3.35" stroke, 11:1 compression.
Dimensions
| Displacement | 138 ci / 2.3 L |
|---|
| Bore | 3.625" |
|---|
| Stroke | 3.35" |
|---|
| Cylinders | 4 |
|---|
| Configuration | I4 |
|---|
| Compression ratio | 11:1 |
|---|
| Rod length | 5.81" |
|---|
| Rod ratio | 1.734 |
|---|
| Bore/stroke ratio | 1.082 |
|---|
Construction
| Block material | cast iron |
|---|
| Head material | cast iron |
|---|
| Valvetrain | OHC |
|---|
| Fuel type | gas |
|---|
| Advertised HP | 150 hp |
|---|
| Years | 1989 |
|---|
What these numbers mean
| Bore/stroke character | 1.082 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|
| Mean piston speed at 6,000 RPM | 3,350 ft/min — conservative for a street engine |
|---|
| Rod ratio | 1.734 — moderate — the range most production V8s fall in |
|---|
| Displacement per cylinder | 34.5 ci |
|---|
| Static compression | 11:1 — 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.
Similar engines
← All Pontiac 138ci engines