here's a wild guess
These type of questions are so subjective...
Just a Wild A$$ Guess.... not much information to go on here... But "optimistically maybe" mid-11's 1/4 mile et's 112-115mph & 525-550hp "maybe", I've seen impressive builds go slower & make less power, I've also seen "not so" impressive builds go faster & make allot of HP too... Maybe it could be much better, depending on many different factors, altitude, what type suspension & shocks, how heavy are the wheels or other reciprocating weight/rotating mass {
effecting power & rpm}, are the slicks new or old
{& what compound}, what type/size fuel pump & size of fuel lines delivery system {
where/how it's set}, what type ignition system {
where/how it's set/applied} & type of fuel used {
pump gas or racing fuels}, what other trans upgrades other than a 4500rpm stall speed converter... It's a pretty heavy 3500lb car, on a little tire/slick & lose converter... IMHFO as far as HP/TQ it really depends on how good the heads are actually ported, what flow at what lift etc., what thickness of head gasket for final compression & quench, what ratio/style rockers & what valve lash, what valve springs {
are they all matched to the camshaft}, what size valves, what size headers & exhaust {
optimistically, something in the neighborhood of 2.06-hp/per CFM of flow potential & tuned properly}, what jetting & accel. pumps/squirter's & what fuel pressures, what other carburetor & ignition &/or other tuning improvements, how well it's been built/assembled & what % of leak down tested/cylinder seal & if it's even properly tuned... Then also if the car can hook well &/or if the driver can perform well etc... it has some good potential to go faster maybe, depending on allot of factors... Just a good performance motor, a 4.56:1 rear gears, lose converter & slicks, in a stock chassis, maybe not enough information here to go on...
GOOD LUCK there's a great site with some really good calculators to put all your numbers in & get a outline what it "could possibly make/do".....
www.WallaceRacing.com/Calculators.htm