Jerry states the key, the valves need to be HOT.

30 minutes get all parts nice and toasty.

I like the values on Tim's link. Paying attention to the note above, add .005 to your value.

SWEET
Sergeant At Arms: Old Dominion Stovebolt Society
BUNS?!?!?!Where we're going, we don't need no buns.....
1950 GMC 450
1951 Chevy 1/2-Ton
The GreenMachine
In the Stovebolt Gallery