how aggressive a profile is this "street" roller??

i'm talking "parts agressive" only
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advertised duration measured @.020 305/315

@.050 269/278

seat timing @.020 44.5/80.5
93.5/41.5

@.200 182/186

.680/.646 lifts on a 112 lsa

using 220/550 lb. springs,turning a max of 6500
in a 548" bbc for street/strip. thanx

Well I aint no cam expert but there is no real universal "standard" on how to judge them...That said I generally use the old Crane " TR " Track Roller lobes or the old 1970's Isky lobes or other easy on parts lobes as a baseline...Stuff that has proved for decades to make decient power and easy on parts...

IE: Assuming a .026 to .030 lash and an advertised duration @ .020....

300 - 304 deg @ .020 .
258 - 266 deg @ .050 .
166 - 175 deg @ .200 .
lobe lift from .380 - .420

Something in this range I would consider a "Base" type cam that would make a good comprimise of decient power , torque and easy on parts...Nothing spectacular but again a baseline type cam...

So for say 270 @ .050 a base could look like :

308 - 314 deg @ .020 .
268 - 274 deg @ .050 .
175 - 187 deg @ .200
Lobe lift from .380 - .440 or so.

Again nothing killer but will work well...

When the duration @ .020 starts getting shorter and the Dur @ .050 is the same and the .200 gets longer and the lobe lift getting larger then to my mind things are abit more intensive or aggressive.

I know this doesnt directly answer your question but to my knowelege there is no universally accepted way to say what a baseline for comparison is....