Comp XE268H v Crow 18619 - 318
Garrett is 10000% correct when he says Isky was one of the first to develop high rate of lift cams. I used the B-777 cam in a few 440 engines, & I picked it out of an Isky 1974 catalog. It could have been in earlier catalogs...
I was so impressed with it that I had a copy made by a local cam grinder, who also used the profile in other engines with great success.
The B-777 was a SFT cam. 240 @ 050, 268 @ 0.020". That is only a 28* difference....back in the 1970s. See how many 'modern' SFT cams of similar 050 duration you can find with 28* separation. Harvey Crane called this the 'Major intensity' & said: '..the smaller the intensity #, the performance will increase!.