I have pretty much maxed out the power that my stock block can hold. I was just curious what were some good motor swaps that could be made to continue my journey lol. I have 2007 Mustang Roush 427R making 421 RWHP. Was looking at doing heads and cams but was informed my stock motor would blow. Any suggestions on good swaps?

 

Depends on how much you want to spend... a Coyote swap would make sense for a mild upgrade, you can get up to 600 rwhp with a blower without too many issues. if you get all forged everything in the bottom end I think they have put down over 1000 rwhp on a coyote block.