Quote Originally Posted by draggin50 View Post
The 347 I bought from Mike had unported Track Heats, small .502/.522 lift blower cam, Victor 5.0, and 9:1 compression made 341hp and went 12.06 in a full weight GT...
Exactly what I'm saying. Ur 347 didn't make 1hp per cube and neither did his 331. This isn't out of the norm. I've seen tons of 347s make 350-380. And they didn't use a cam from 1991. The dyno doesn't lie. If the a/f is good and not pig rich then that's what it makes. My old 306 made 360rwhp on the same dyno tuned by the same place. Na is na there isn't alot to tuning it. Not all motors are created equal. Attention to detail makes power. Low peak power cam mixed with a 7k intake usually doesn't work well unless u degree the cam to make power higher.