04 3.9 Mustang rebuild, need help.

04SN95mustang

New Member
I have an 04 3.9 mustang I'm wanting to make 500wbhp out my stang would it be best to rebuild the 3.9 with 240 000 miles or get a new 3.8/3.9 or just go for a 4.2 ?
 

Oblithian

Member
I have an 04 3.9 mustang I'm wanting to make 500wbhp out my stang would it be best to rebuild the 3.9 with 240 000 miles or get a new 3.8/3.9 or just go for a 4.2 ?
If you want the car to last, you'll want to rebuild the engine, if the shop inspects the block and says it is in good shape go with that. Otherwise you are just buying a new engine only to then gut it and replace the components. Unless. You are doing a 4.2L conversion, then you might just want to rebuilf that (from what I have found it's typically cheaper to buy one whole).

Out of curiousity, are you turbocharging it, or supercharging it?
 
Top