with all the talk of N/A cobras lately, i got curious. i called powerheads the other day to see what their ads were all about in MM&FF. they say with the full head kit (p/p titanium valves/ spring package, yada yada) and with their stage I cams, should add about 75-80 hp at the wheels and around the same for tq, which isn't that hard to believe, but would run almost $3k and that's using your own heads. is there a cheaper way to go than this? has anyone had any experience with powerheads? is the spring package necessary? i really like n/a cars and this sounds like the way to go. are these numbers accurate? does anyone have any input?
Last edited: