you need to know your installed height of your current valves retainers and locks setup..
Then you would take this number and subtract the coil bind number. Lets say it is 1.90 minus 1.2 which is .700 lift max....but you need too add .050 before coil bind to be safe...so .650 lift cam no problems at all.

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]