Point of interest. I ran both Isky Turbo Cycle cams years ago and the one that Crane and Comp recommended back in the 80s. The STOCK REPLACEMENT Chevy truck cam of the day ran better than any of them at any boost up to about 14psi.
If you can, post those specs on those cams that ran worse than stock.
Isky would probably still recommend that same grind but I think the Comp Cam people would recommend something different depending on your goal/mods.
What those companies would recommend in the 80's should be different than what they would recommend for todays applications, if not, they need to update there master cam catalogs & update their staff. Just my two cents.
