Engine Does this page hold any merit?

Does this page hold any merit?

http://www.billzilla.org/4agmods.htm

It gives a pretty good outline of power to be made with different mods. Anybody agree or disagree with his assertions?

interesting read. 4ag is a very nice engine and mods seem to be along the lines of what he is talking about. i didn't fully read through it though. my favorite is the 4agze engine and my mod of choice would be to mount the previa s/c, add a pulley and then do the standard mods.

Well I don't kno enough technicalities bout engines to comment bout whether or not it has merit....but when people ask how they can get extra hp gains....on any engine in general, this would be the dream answer...

Pretty well thought out page - the guy is well known for his knowledge on earlier Toyota powerplants as well as some others. As for being realistic numbers? Hard to say - he doesn't provide enough information - anyone can come up with seat of the pants HP numbers and run them through an engine simulator (which he alludes to later in some of his other pages). Only thing I can say for sure is the steps from one to the other are reasonable to get added power gains - but don't put too much in his numbers, just his steps.