I bought a McGurk roller cam assembly from Cory Beck here on Inliners about 4 years ago. It included the cam, the lifters and the springs. I ran it last year but snapped a damper and bent a push rod at about 5600 RPM. Since I run nostalgia, I feel this is a significant piece to have. I was led to believe that the Buick 455 sping fits the pocket. I see that TA performance makes a roller cam for the 455. I will check with them when they open on Monday what spring they use. The head is in the machine shop right now and I could turn the guide and/or change the seat. I wasn't aware of the need for a higher rate spring for the roller cam, I don't think McGurk was either. I could use a dual spring, just don't want float. Still open to any suggestion.

Further, I am aware that my best power is probably in the 4800 range, but I don't want float and since I am changing intake, headers and head work, I want to give myself a little room.

Thanks

Warren

Last edited by Warren grimm; 02/23/19 03:25 PM.