86 GMC K1500 Crate 350-Adding HP without Removing Engine

[Jrgunn5150]

CAm, and Vortec heads with valve rocker studs and a good set of affordable rockers will do wonders.

Engine masters does some great video showcasing what works and what doesn't, as well as where the falloff point is.

xc_hide_links_from_guests_guests_error_hide_media

It will, but you're into it for 1,000 or so by then. So cost to benefit is definitely something to take into account.