Horsepower estimate?

A stock 360 with headers and a four barrel is all over 300 HP. Now I'm talkin GROSS HP, not net. Like they were measured before 72, which is all I give a damn about anyway. lol So yours maybe somewhere around 330 or so like @crackedback said. But the torque is probably pretty substantial. I wouldn't be surprised to see it hit 360-375 LB FT, depending on the camshaft.
Pretty good estimating Rob, pretty good...............

Let's put a mild 8.2:1 360 on the dyno.