Pretty much agree w/ everyone else...the weather likely had a lot to do w/ it. I'd bet it'd be at least a tenth quicker in the same weather you ran the 12.10 in previously.
The new cam along w/ a looser converter will def. wake it up.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax