ogasman (12/26/2020)
Decided to go with the Isky 30-1444. Will I have to make the oil groove in the third journal deeper with this cam?When I purchased my ISKY 301333 cam we measured the oil grove depth at .018". Since Mummert re grooves his cams, we decided to cut our cam to .030". We used a lathe to deepen the grove. With the engine assembled on the engine stand, I used a socket and a hand crank to turn the oil pump so I could check the oil flow. The flow to the heads was more than adequate. Upon full assembly I was somewhat worried that I would have too much oil to the heads. Previously, I had always closed the oil drain tubes off to pressurize the rocker arms. With the deeper cam grove, I purchased new oil drain tubes and installed them open in the stock location. Upon initial start, I watched the oil flow to the heads and all looked good. With about 3,000 miles on my engine, I have had no oiling issues.
Personally, I believe cutting the cam oil grove deeper is a viable modification. I'm not sure it's a necessity, especially if you are street driving. Some members have had to restrict the oil flow as they had too much oil to the heads after cutting the grove. Thankfully, I did not,
