My 182 needs a new engine, im lead to believe that 182's have a higher rev limit than 172's? If a 172 engine block is put into my car would it still be able to reach the higher rev limits that a 182 have? Also I had noticed 182 engine codes are F4R 738 and a 172 is F4R 736, why is this and what's the difference? Any help is appreciated.