Has there ever been a 8–4 in all competitions?

Yes, 8 times.

The first time: November 2, 1913, Atlanta beat Sociedad Sportiva Argentina (Sociedad Sportiva Argentina 4–8 Atlanta) · Primera Argentina.

The last time: February 26, 1977, 1. FC Köln beat Tennis Borussia Berlin (1. FC Köln 8–4 Tennis Borussia Berlin) · Bundesliga, 49 years ago.

Home wins: 7. Away wins: 1.

Nearby scores

1. 9–3 12 times
2. 9–4 2 times
3. 9–5 2 times
4. 8–3 26 times
5. 8–4 8 times
6. 8–5 1 time
7. 7–3 104 times
8. 7–4 33 times
9. 7–5 12 times

All games

1. February 26, 1977 1. FC Köln 8–4 Tennis Borussia Berlin · Bundesliga
2. May 25, 1974 Stade de Reims 8–4 AS Monaco · Ligue 1
3. February 22, 1958 Leicester City 8–4 Manchester City · Premier League
4. February 16, 1958 UA Sedan-Torcy 8–4 AS Béziers · Ligue 1
5. September 27, 1952 Blackpool 8–4 Charlton Athletic · Premier League
6. March 4, 1948 RC Strasbourg 8–4 FC Metz · Ligue 1
7. November 10, 1935 Lanús 8–4 Atlanta · Primera Argentina
8. November 2, 1913 Sociedad Sportiva Argentina 4–8 Atlanta · Primera Argentina