Alright y'all, I know this isn't gonna sound good but I am wanting to swap my 89 f250s 351w out with 350k miles with a new 427, I've never swapped out a motor and I'm not emtireen sure how I would swap a chevy motor into a Ford. Can anyone give me like step by step instructions or how to

 

Not to throw cold water on your idea but what you want to do would be a 11 out of 10 for one who has not done an engine swap. You will need to change the trans, custom driveshaft, custom motor mounts, and a wiring nightmare Subford would be reluctant to tackle amoung other things. Don't get me wrong, it can be done with enough money, time, and effort. You would be way ahead by rebuilding your 5.8 and adding gt40 heads from late 90's explorer and the crane cam that Conanski recommends.

 

I hope you are suggesting a stroker 351w to 427, if you are speaking of a FE 427 you have your hands full with modifications. It would be really awesome, there is nothing like a 427FE motor. Otherwise I would also be assuming you would be swapping to a carburetor motor or stand alone computer swap? Still a lot of work but worth it! I would also suggest using a Dart block and even possibly filling the block, you need a long stroke block and reinforced to handle that type of throw. 393 stokers are much more adaptable to the 351w blocks.