Isky 404A cam - Harley Davidson grind?

[Jason in TX]

Hello! I recently picked up a great collection of vintage flathead stuff, including a full house 3/8 by 3/8 flathead with a 404A cam, radius lifters, etc. The works.

Also in the deal was an extra "special" custom ground cam that was done especially for the previous owner. The previous owner has passed away, so this information is coming from his son who sold me the parts.

His son said that his father knew Ed Iskenderian and Ed did this special grind for him to match the Harley Davidson profile. He told me that it should make the flathead sound like a 4 harleys running at the same time!

Going off the markings scribed between the lobes on the cam, I'm trying to figure out if anyone has any info or heard anything about this type of cam.

Written on the cam is

Z98L (or maybe Z981)
12436
ISKYc
011 (or maybe QN)
404A

Pictures below.