Differences between machine work...Heads

This is a good post and it really shows the importance of being educated before spending money.This is a good example of why people should be hestitant to buy already assembled pieces such as enignes and heads and if they do at least tear them down for inspection-or have a reputable machine shop do it-and expect there might be something subpar.One thing I have to say is its past time someone came out with a current high performance book for mopar,Ive bought the few I can find and found them all to be lacking in the area of performance parts theory and peformance cylinder head mods.It would be nice to see a mopar book that explains camshaft theory in depth to aid in selcting cams for those who want to know as well as head porting ect.Ive owned all types of cars (mopar being my first and most favorite of course) and recently was building pontiacs and I have to say theres alot more buzz regarding do it yourself perfomance in the pontiac community with regards to new products,literature ect.Im not a at all bashing the mopar info out there but we could always use more and up to date stuff,once again great idea and thanks for the post.