I´m the owner of a chevelle 64 with a balanced 350 it has flat top pistons, Trickflow 23 degree cnc 64 cc heads, comp cams hydralic flat tappet 268 degree cam, Edelbrock rpm airgap intake manifold with a Holley 650 dp. The tranny is a 700 with 2000 stall converter and a 12 bolt rear with 3.73. Is it possible to run a 13 second time on 402.

i would think that you should be able to run some low 13's with that 350, possibly high 12's depending on what tires you have.

I´m not sure about the tires perhaps 275/60-15 Bfg drag radials.