Trail and error (s) Still had fun at LVD

Well the snubber is cheap enuff, but to be honest at this point especially without the headers on (easily losing 50-60 HP off the 430 dyno HP ) and the stock '70 340 air cleaner assembly I dont think the crank power is twisting those springs just yet. Maybee with better traction.
Was fishing for some solid 1/4 mi time reductions when switching from street radials to a DRAG radial. From experience, would anyone say I could drop maybee another 3/10th, maybee 4/10th?? I plan to swap out the 3.55 for 4.10 this winter anyhow. That should be good for at least .4 right there, but will make it more difficult obviously to gain traction.
I wish I had another 3-4 more runs to play around with my launch technique..Im pretty confident I had a 13.5 on my street BFG.s in it Saturday.