11 second smallblock...how would you build it?

Even high 11s is hard without slicks, maybe if you run nitto drag radials?

Also 3.91 may get it, but without a stroker most folks need a 4.10 or 4.30.

I would lean towards a comp cam roller gring in the 280 range, at least 10.5-11 compression static, air gap, 750 ish size carb, good ignition, tti heads with 2.5 or 3" pipes x style.

also for an auto trans in the 2600-3000 stall speed range and a little on the loose side.

Also you are going to need decent suspension too so that you can get very good 60' times.

As for the heads a nice warmed up set of 2.02 x head or Js should do it mith port matching, maybe a trick taller skinny valve stem like a chevy and a good 3-4 angle vavle job. Doing at least that with the port matcing will not hurt the street drive and I think give you some more air i nthe 4500-6000 range that you are going to need.

As for the car, if you can shed 300-400 lbs it is like adding a bunch mor eHP too. So keep that in mind as well, good luvk and I am sure you will get a lot more feedback buddy:)