Setting valves

[money17]

Fellow racer has a 430 all aluminum 18* double swap cam motor. Didnt get a cam card with motor.
We know lift is somewhere between 700 and 800. Valves were set on 9 cold when bought. This guy asked around and had some people
tell him to set it between 5 and 7 cold. When it warmed up they would be set. Is this something new? My motor is preety close
with a double swap, but they are set on 20 and 18. Need input.

Thanks

[sj valley dave]

You really need to get it to operating temp, set the lash at whatever is recommended and then let it totally cool down and then check them cold. We use a temp gun to check block/head temp when setting cold as you will see a difference when you set them cold and it's 45* outside vs 100* day..LOL..Our cam is similiar with an all aluminum engine deal and at temp we are at a lash of .018/.020 and to get there when it is stone cold we are set the valves at .000/.002....