Duh dude, I realize that (I am a mustang freak). I am saying the 4.6 is a different animal all together, but they certainly can be on par with GM's offerings.
And to put up those kind of numbers n/a you must have stroked the **** out of it or have been running ridiculous amounts of compression (which wouldn't work on pump gas). I'm not buying it.
aluminum block, pushrod 5.7 > 4.6 overhead cam
It put down 308rwhp bone stock to the paper filter.
free mods, lid, headers, true duals, pcm flash tuned.... 357rwhp
+ cam, intake, & gears.... 426rwhp
+ heads, tremec ***** internals upgraded to 60/60, 9'' ford rear end.... 529rwhp
+ 383 stroker kit, new custom head/cam kit, new gears, m/t slicks, roll cage, pcm reflashed & retuned on the fly..... 677rwhp n/a on pump gas
.......& it still had low compression, it was built for a supercharger. I had things come up & was forced to sell it before I could add the blower & finish the build. The guy I sold it to planned to add a custom paxton supercharger & hit 1,000 rwhp......& keep it street legal.
the 4.6 is overmatched against the 5.7
I like both vehicles, my first car was a '96 SVT Cobra & my next sports car will be a terminator. The 4.6 simply cannot keep up with the LS1 mod for mod. Plus, in stock form they are well behind.