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.
1886 (96-66)
C Buck Ewing 3.8
1B Roger Connor 7.5
2B Joe Gerhardt -3.25
SS Monte Ward 1
3B Dude Esterbrook .1
LF Patrick Gillespie -.6
CF Danny Richardson -.3
RF Mike Dorgan 1.5
Uti/RF Jim O’Rourke 4.7
C Pat Deasley .3
P Tim Keefe 7.25
P Mickey Welch 3.55