Well, I have a 275/60/r15 tire small block (close enough??). It runs 1.38 60’, 6.44 @ 105.9, 10.19 @ 130.5 in cool air, 6.5x’s and 10.3x’s in the heat.
Combo: 67 Barracuda, 3250 lbs, 408 stroker, e85, ported Edelbrock heads, Hughes solid FT cam 264/268 @0.05, Victor intake, home built 750dp e85 carb, 13.1 compression, 727, TA manual valve body, 8” PTC converter, 8 ¾ (MO875), spool, 4.10 gears, Hoosier 275/60/r15 DR.
I'm running almost identical times and mph on a 275 ET Street Pro. I drive it the way I race it save for shock adjustment in the rear to soften it up on the street.