C-150, Continental 0-200; 100HP,
C-152, Lycoming 0-235, 115 HP
C-172 (old ones)Continental C-145/0-300 145 HP
C-172 newer ones Lycoming 0-320; HP varies 145 to 160
Warriors have various models of the 0-320 also
Mind you, this going back a few years, I'm sure I will be corrected by someone!