depends according to my interchange book there were 2 429s offered in the torino one was the 4v and the other was the CJ the 4v is listed at 230hp @4400 322tq @2600 the CJ is listed 370HP @5400 and 425tq @3200 so it really depends what heads you motor has on currently... if you give me the castings i can tell you which motor you have