Quote Originally Posted by zracTA View Post
It is a "simple" build of a 350 vortec around 1998 with lightly more radical cam than stock, about 300hp was expected of the build and he copied the specs/parts from some legitimate source. It currently starts better than most new cars, idles without any issues and revs perfectly fine past 4500, headers dont glow, it runs at normal heat etc... what it doesn't have is any guts and I mean any at all... past 3500 you could almost pretend it's normal, but it should be spinning tires in 1st gear as well and it's got nothing to offer, in lower rpm acceleration it also has a slight odd shake but it's not very noticeable..
JMHO, I would check cam timing.