Bowl Blending?

The Comp Cams I refur to are the DEH line. Duel Energy. There Hyd. cams with some very wide duration seperations. Designed for stock exhaust systems as per Comp Cams. There are 3 listed in the paged catolog. I'll list them.

advertised/ @ .050 duration/lift/centerlines/RPM range

255DEH-255/275-203/219-.442-.462-110-1200-5500 RPM
265DEH-265/276-211/227-.442-.462-110-1600-5750 RPM
275DEH-275/284-219/235-.462-.482-110-2000-6000 RPM

Now if we step up to the plate for some power making with the likes of headers, aftermarket intakes with or without head porting, I would not bother with these cams.
Next to the extreme cams, there lazy and slow.

Extreme.............XE274 - 274/286-230/236-.488/.491-110- 1800-6000 RPM
Ex-hi-lift .. .......XE275HL 275/287-231/237-.525/.525-110- 2000-6000 RPM
Mech.Extr...........XS274S 274/280-236/242-.502/.511-110- 2200-6200 RPM
Mech roller Extr....XR274R-274/280-236/242-.564/.570-110-2200-6300 RPM

Notice how in order, the duration at .050 against the advertised duration goes up as well as against the DEH cams.
If you took notice....the roller isn't any more aggressive than the mech cam. Except in lift. Which is quit nice for a street engine. Fits Edel heads max lift easy.
If you did want one more agressive, Comp could whip one up easy or you could take a peak at there cam cores/special ramps listed in there catolog. But I would caution against doing a pick a grind number out of the catolog. Talk to the experts. That roller is very capable and IF you have a roller 360 engine allready, I'd do that one over the mech one.
To me, this is where the extra expense would be OK with me.

PS, anytime anybodys on Long Island............
I also travel afr to pick parts up. Sometimes it's cheaper than mailing them. UPS/FED-EX etc....But it's more about seeing the country and meeting people.