[Steve C.]

Related to Jay's comments....

"Ed saw that racers could benefit from the advancement of higher-technology in racing so he created the first Hard- Face Overlay camshafts in the industry and became the first to employ computers in camshaft design. With the computer, Ed created the most advanced cam-profiles of the late 1950s and early 60s like the famous 5-Cycle and Polydyne Profile 505 Magnum’s along with the very first Hydraulic racing camshafts in the industry"

Source: https://www.iskycams.com/about-us/the-legend/

Quotes from other sources...

"Isky hstorically utilized a 108-degree lobe separation angle (LSA) to maximize mid-range torque, enhance cylinder scavenging, and produce a distinct, aggressive idle in naturally aspirated engines"

"Isky says longer exhaust duration cams simply kill low-mid range torque and no more...and that single pattern cams alway make more power"

They still elude to it today...

"After all these years, there is still a lot of debate regarding single- and dual-pattern camshafts. According to Jamora, it all depends on the application. For naturally aspirated hydraulic flat-tappet motors, Jamora recommends a single-pattern cam for maximum power"

https://www.motortrend.com/how-to/09...design-secrets

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