1978 / World Championship for Makes
Feb
3
XIII Daytona 24 hours
Daytona International Speedway
Mar
19
III Mugello 6 hours
Autodromo Internazionale del Mugello
Apr
16
III Dijon 4 hours
Circuit Dijon-Prenois
May
14
III Silverstone 6 hours
Silverstone Circuit
May
28
XXIV ADAC Nürburgring 1000 kms
Nürburgring Nordschleife
Jun
25
I Misano 6 hours
Circuito Internazionale Santa Monica
Jul
8
XI Watkins Glen 6 hours
Watkins Glen International
Sep
3
VI Vallelunga 6 hours
Autodromo Vallelunga