i been reading up on the 400 ford engine lately and we all know what power the 400 made out of the box, basically none. recent articles that i have read stated that with a few changes to the 400 such as heads, cam, and bump up the compression, a person can have an engine that can out run a 429/460. im not talking about a highly modified 429/460, these articles were for street engines in the 400 to 500 horse power range. they claim you are better off building a 400 because they are a lighter engine and make as much hp and torque. what do you guys think about this. thanks, jtgb428