340 on pump gas

I run a '69 Dart that weighs 3033lbs with me in it. I have a .040" over 340 with the .557 DC cam in it; the compression is 10.8:1 and I run 93 octane pump gas, the heads are the Eddys with a little portwork done to them. The intake is an Edelbrock Torquer II with a Holley 830CFM carb. The rockers are 1.5s. The headers are 1 5/8" primaries into 3" collectors. I run a 904 with a PTC 5200 8" converter. The rear is a 4.10 with Hoosier 26"x9" slicks. The Dart consistently runs in the 7.30s in the 1/8 and 11.40s in the 1/4. The best times are 7.129 in the 1/8th and 11.359 in the 1/4.