My WAR calculation is a combination of Baseball-reference and Clay Davenport; I believe it to be the "best" WAR number available for historical comparison. 8 WAR is an MVP quality season. The record is pythagorean adjusted for 162 games.
1941 77-85
C Harry Danning 2.35
1B Babe Young 2.5
2B Burgess Whitehead -1.5
SS Billy Jurges 3.7
3B Dick Bartell 2.55
LF Jo Jo Moore .3
CF Johnny Rucker .4
RF Mel Ott 4.65
3B Joe Orengo -.05
OF Morrie Arnovich .55
C Gabby Hartnett 1.3
2B Odell Hale -.4
2B Mickey Witek .65
SP Hal Schumacher 4.25
SP Cliff Melton 3.35
SP Carl Hubbell 2.6
SP Bill Lohrman 1.15
SP Bob Carpenter .55
SP Bill McGee -.65-It's not terrible, a 77 win pythag, but this is the worst Giants team since 1915. There were worse things than being a Giants fan for the first half of the 20th century. They stopped a game in the middle in May so the fans could listen to FDR talk about the war. Ott hit his 400th homer and after the season replaced Terry as the team's manager.