Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Chassis | Engine(s) | Tyres | Points |
| --- | --- | --- | --- | --- |
| 1973.0 | Ensign N173 | Ford V8 | F | 0 |
| 1974.0 | Ensign N174 | Ford V8 | F | 0 |
| 1975.0 | Ensign N174 Ensign N175 | Ford V8 | G | 1 |
| 1976.0 | Ensign N174 Ensign N176 | Ford V8 | G | 2 |
| 1977.0 | Ensign N177 | Ford V8 | G | 10* |
| 1978.0 | Ensign N177 | Ford V8 | G | 1 |
| 1979.0 | Ensign N177 Ensign N179 | Ford V8 | G | 0 |
| 1980.0 | Ensign N180 | Ford V8 | G | 0 |
| 1981.0 | Ensign N180B | Ford V8 | M A | 5 |
| 1982.0 | Ensign N180B Ensign N181 | Ford V8 | P | 0 |
Question:
What is the engine(s) on the car before 1978 with ensign n177 chassis?
Answer:
Ford V8