Plenty of guys including myself have run 18lbs on the stock block...some more than 18
I completely understand.
At that point it's such a fine line between power and destruction.
The very marginal gain just doesn't seem worth the risk on a street truck, unless you are already prepared to 'go-built'.
...And a Whipple pushing 18# is safer than an Eaton @ the same.
I've run 18 too. I just don't recommend it. The heat produced with the Eaton at that level is substantial. That's why I backed it down to 15 or so.
But now that my motor is built I can cool the charge with as big of a shot I want and not have to worry about the heat of the Eaton.
:beer: