Trying to sqeeze more out of my 340

Try a M1 or Super Victor intake.What RPM are you launching at?How old is your converter/tranny? I run a 10.5 to 1(pump gas) Eddy headed 410c.i with M1 intake,AED850 dp,904 with 8 inch 4500 Coan.Rear is Dana 4:30 with 29.5x12. 3180 lbs with me in it.Car runs 10.60@123 mph 60ft 1.44.Crosses the stripe at 6200 rpm. View attachment image.jpg