adding a blower and oil weights....

[1974dodgecharger]

If one a dude was using 10w-30 for his oil on his mopar 383 and then decided to add a 871 blower to his car should he increase the oil weight to 20w-50?

[tan top]

interesting question      ,  could even factor in   bearing type  &  clearences  ,  oil pump psi  too    think depending how much over driven the blower is , type of blower  etc .. relates to how much extra stress on the crank  , my be !!  , just guessing  on this , may well completely wrong, & talking crap