Whiplash Cams (318 LA)
I haven't used one but here's my take on the subject of these cams designed to sound bigger than they are. Just like comp's thumper series, these cams do raise cylinder pressure a little with their tighter lobe separation angle and more valve timing does fill the cylinders more to make more power in a low compression engine, but, I think you can call any competent cam grinder and get a custom ground cam "for your particular application" that could very well work somewhat better for the same price, or maybe even less since Hughes is kinda pricey on their cams. I've used Racer Brown cams with good results and if I were hopping up a stock teen Jim's the man I'd call. And X2 on what Rob said about using the correct springs to make it work right
BTW: if you really want it to run better and sound tough have a mild solid tight lash cam ground for it. And don't listen to all the bull about how you've got to adjust a solid cam's lash every 1000 miles. Cam's ground 40-50 yrs ago were that way but today's tight lash designs are the cats meow. I have one in my 408 and put about 3000 HARD miles on it a year and every spring I lash the cam and usually only have to tighten a few .001~.002". In other words I could probably go 2 yrs. between lashing it but I just do it yearly cause I'm a maintenance freak