i was just wondering how i make a 408 and what kind of horsepower can u expect out of them...........also is there anyway to swap my 5.3 for a 6.0 with out buying a new computer for it and also how hard is it????

 

a 408 is a 6.0L with a 4 inch stroker crank and a .030 over bore

 

If you do the 5.3 to 6.0 swap you won't need to change your computer=PCM you will just need to get a tune for it. Use the search function in the forum and you will find the answer to your question.

 

amount of HP varies on a few factors that weren't mentioned.
N/A or F/I?
Compression Ratio?
Bolt ons?

 

michaelpayne1985,

Don't cross post threads. Only post in the correct sections (e.g. Forced Induction is not where you ask how to build a 408).