350 hp out of a fairly stock 340

My mild 360, .040 over, around 9:1 cr, stock stroke, stock heads, hyd flat tappet cam, with an Edelbrock air gap and 750 carb, running a .444/.467 cam, TTi headers through a full 3 inch exhaust and a 727 trans and 3.23 gears in a full steel body, full interior 1970 Dart ran 13.80 @100 mph 1/4 mile.
The 340 Barracuda's and Dart's in 68 ran 14:80's to 15:00 1/4 mile times.
I don't believe that motor made more than about 350 hp.