You can. Trick Flow or ProMaxx will be ready out of the box. But many here will recommend having someone in the know check them out wherever they come from. No company is perfect and is it worth the risk of hanging a valve?
Just so I'm understanding you correctly, your current motor makes 350-400hp and you want to upgrade, correct? Also street only, correct? What exactly are you looking for (HP #, or ET#)....it is easier to make a suggestion if there is a specific goal in mind. All engine parts (the combo) need to work together to make the most of them, which is why I'm asking.
^^This^^ I had great luck with my Edelbrocks, bought them used and had them ported and they ran great. I'm not a buy it, bolt it on type of guy when it comes to heads and intakes though.
Fair enough, I have this small block as you know, I want to run in the low 11s to high 10s, the car already ran in the 11s but I like to run in on the street really, enjoy it more like that but I want it to be able to run consistent mid 11s... Without the bottle.
Gotcha. Some ported Edelbrocks would work well for this, or the new Trick flows. Both of these heads would give you the potential to get into the low 11's to high 10 second range with your current setup. Sorry, I didn't see it, but what heads are currently on the car? Ported cast iron?
Yes, I also have original W2 Race prepared that Mancini originally sold but the stock styled ones have been pretty good as wellcv with the compression I was running.(what I was told to use, instead of the W2)