I just picked up a 1990 18ft charger with a 1990 johnson 175. It did not have a prop and the guy knew nothing about the boat, as he got it on a trade. What prop should I go with? Thanks for any help.

id say 24 raker

If this is the charger out of s ft worth with GT175 and no prop better have a mechanic check it , it has a bad hole.

if the motor is okay.
a 22 or 24 raker is a great choice.

some older combo's like that really liked the old 23p shooter 4 blade props too.