Yamaha OX77 engine
The Yamaha OX77 is a naturally aspirated gasoline-powered  V8 racing engine, developed and built by Yamaha for Formula 3000, specifically the Japanese Formula 3000 Championship, between 1987 and 1988. It is derived from the Cosworth DFV engine, but uses 5 valves per cylinder instead of the DFV's 4. This engine notably won the 1988 Japanese Formula 3000 Championship, being driven by Aguri Suzuki. References

Super Formula
V8 engines
Gasoline engines by model
Engines by model
Yamaha products