Pontiac Ponti 1988 173 135HP Specs
Pontiac Ponti 1988 173 135HP engine specs: 173 ci (2.8L), 6-cylinder, 3.5" bore x 3" stroke, 9.2:1 compression.
Dimensions
| Displacement | 173 ci / 2.8 L |
|---|
| Bore | 3.5" |
|---|
| Stroke | 3" |
|---|
| Cylinders | 6 |
|---|
| Configuration | I6 |
|---|
| Compression ratio | 9.2:1 |
|---|
| Rod length | 5.7" |
|---|
| Rod ratio | 1.9 |
|---|
| Bore/stroke ratio | 1.167 |
|---|
Construction
| Block material | cast iron |
|---|
| Head material | cast iron |
|---|
| Valvetrain | OHV |
|---|
| Fuel type | gas |
|---|
| Advertised HP | 135 hp |
|---|
| Years | 1988 |
|---|
What these numbers mean
| Bore/stroke character | 1.167 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|
| Mean piston speed at 6,000 RPM | 3,000 ft/min — conservative for a street engine |
|---|
| Rod ratio | 1.9 — long — less side loading on the cylinder wall, favours high RPM |
|---|
| Displacement per cylinder | 28.8 ci |
|---|
| Static compression | 9.2:1 — low by modern standards, generally happy on regular pump fuel |
|---|
Run the numbers for this engine
Each link opens the calculator with this engine's specs already filled in.
Similar engines
← All Pontiac 173ci engines