Quote Originally Posted by Kevin B View Post
Thanks Frank, might just get another set of heads, whats your thoughts on a set of 4.6 or should I just stick with 3.5's
If they fit and have bigger valves and ports I would go for them, but I have no idea what the difference might be, these engines were knicknamed "Nailheads" because of the ridiculously small valves, and ports so any improvement in that area would be good, Regards Frank.