Guess the hp/torque on street 589ci wedge

Those numbers look legit to me.

I’d run it as is before changing anything.
The car would have to be pretty bad to not be able to run 10.50’s with that.

Those heads aren’t really a good match for what that type of build imo(small cam, low cr).

Indy R-1 cam??

A compression test might be interesting.

Those numbers are pretty close to a street/strip 572 I did with EZ295’s and an untouched 337 intake/4150 1050 carb..... similar peak hp rpm too.
With a port matched 440-2/adapter and 1150 carb it picked up a little over 20hp.