Originally Posted by teej281

For a fully built 2v to put down only 305rwhp and 316rwtq isnt that great. And to gain 50rwhp over that number by just doing these heads id say is impressive. And the fact that the power starts out the same and grows gradually over the entire rpm band says a lot about these heads that they dont just make peak power but broaden the hp and torque curve overall which is an awesome feat in my opinon. I would like to see a direct swap from completely stock to these heads and some custom grind cams to see how the power curve and drivability would be affected by these things. I always had extreme faith in these heads and I think after seeing these results, I feel I was right.

Originally Posted by defconfire

I would go ahead and say it probably not an upgrade for the 4v guys. This is likely a fairly heavily cammed car.. 99-01 cobras can get to the 320 rwhp range with full boltons and with cams can hit around ~370-380 rwhp.

Besides the 4v's tend to make much more linear power than the 2v's which can be good for some applications.

I'd say if you have a 4v keep it a 4v and just add some cams if you still want more n/a power.

Originally Posted by jRock617

Im wondering how much power a car would put down with full bolt ons, these heads ported, a better intake manifold, and cams better suited for these heads.

do you guys really think we'll see 390 hp N/A?????

I mean if this car made 350 to the wheels and it had the stock PI intake and unported TFS heads and a cam that wasnt specifically for the heads, do you think we'll see close to the 400 mark?