Originally Posted by 1Gary
Aaaaa yes we have used that intake on a street driven car.Responsive off idle threw-out the rpm range.You wouldn't think so,but cam selection does come into play as apart of the combo.Growth potential is built into it as well.
A "street drive car" can mean anything
. More to the point of this thread, remember- the OP asked about using Vortec heads on a GM crate engine, presumably a crate engine that had worse heads than Vortecs (or no heads if a short block), else he wouldn't be asking about Vortec heads in the first place.
That leaves a distinct possibility that the engine will have either a really small cam: .383"/.401" lift and around 200 degrees duration @ 0.050" lift on the 260 hp model, or a crappy cam when mated to a too-low CR, like the 290 hp model sports.
The bottom line is that open plenum raised port race intake on a crate 350 w/Vortec heads and either of the lame cams above would be a total pos. And to lead the OP into believing anything different would be a real disservice to him unless ALL the info pertaining to the intake and its suitability for use in his case is included.