yes the bias will wander/track . when I ran them on my 32 Ford and 54 Desoto they would wander under around 40MPH over that never noticed it
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive