Like Steve H said...how you adjust your valves isn't as important as why and getting it right. All of the methods mentioned so far will work. I used to adjust my valves with the motor running because that's how the Old Timer that taught me did it.

It's just not necessary to have the motor running. It's much safer as well for the novice. And ICEO is so easy to remember. Just another option that's all.

Hollow65, Cummins recommends adjusting the valves cool ( below 140F ) no kidding

Thanks,
Greg

1947 M15 Studebaker 454 4x4
1949 Chevy COE
In the Stovebolt Gallery
More pix of the COE
1950 Harley FL
1958 GMC LCF 455 3x2bbl
1961 Chevy C60 Tilt Cab 327
1966 Chevy C60 Tilt Cab 496
1961 Chevy K10 sb 292
1974 Harley FXE
1979 Chevy K10 sb
2007 Harley Streetglide


I'm not that good but I'm slow