unfortunately i don't have any specs on the engine, previous owner could only tell me it was .40 over, its got pro topline alum heads that seem to have valve guides causing smoke. from the little info i have found on the pro toplines, it doesn't seem like a quality head. i am thinking AFR 185s the engine does have a cam but the previous owner was a bit of an idiot, having all the work done for him and paying without knowing what he was actually getting. if it helps its got a trickflow intake and MAC LTs with 3in collectors. it was built by texas hot rods a few years back and those guys are difficult to deal with as far as getting any other specs