I hoped there would be a bit more discussion about this, because I am looking for a new cam too. I read everything about the "George CobraJet Cam" and I think it's a brilliant idea, but I honestly don't understand why he picked these lobes specifically.
https://pantera.infopop.cc/top...t-cam-profile?page=1
1. The Intake Lobe is a .875 Ford specific design, which George emphasizes. The Exhaust Lobe however is not, although there are "Ford Lobes" in the Bullet Catalog that are close and could be interchangeable in my opinion, i. e.
HF288/356 288 236 151 .3560 .000 CRA
which leads to
2. why does exhaust and intake valve need to have the same lift? Most cams including the stock Cleveland cams have more lift on the exhaust side. This leads to
3. what is the critical lift for a 4V Cleveland with Iron heads? I know it depends on the valvetrain components and the clearance between valves and piston. But lets say you have a stock high compression Cleveland and just want to change the cam (you would at least put new valve springs and lifters in it anyway), what is the critical lift?
If you take a look at the Howards lobe catalog on page 26 for the Ford specific .875 tappets nearly every lobe has more lift
https://www.howardscams.com/si...mail%201-20-2014.pdf
It would be great if somebody could clarify these questions.
Thank you for reading and for the record I don't want to disrespect anybody especially not George Pence.