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What kind of setup do you have and what was your time in the 1/4 ? It looks like your car runs pretty good.
Best numbers are 12.17 at 109. It 's a 383 with Vortec heads, XE262 cam, Quadrajet, headers, TH350 trans with 3K stall converter, 3.73 rear, and drag radials.
Thats pretty good numbers,i think you still have a little more in it.Remember with more power the stock rear will give way,i broke my rear 2 times and im on the third one.I need to beef mine up but im layed off.So be aware of that.I seen where you want to change your cam to a HR ,thats a good choice.