I have a lead on a low milage stock1990 roller motor.This may sound like a dumb question, but what makes this a roller motor? I am guessing it has roller tip liftersand maybe roller rockers? but what else? I am told it is a stock motor, no mods, does anyone know what the hp out-put of this motor is and is it a better buit motor than my stock 89 5.0? Thanks for the help.

 

hydraulic roller cam is the defining factor

 

it's the same engine

 

roller motor= rollercam,lifters...and a pre roller 302 has a flat tappet or a mechanical..