Years ago I bracket raced a 340 Dart. When it got into the low 12's and high 11's the stock trans didn't always want to go right in gear when I power shifted as I would leave the gas pedal on the floor the whole run. So I started lifting the gas real fast as I shifted and you know it did not slow me down at all. I would bring the rpm's up to about 5000 when the lites came down and then floorboard it when I popped the clutch. It hooked good for 28 x 9 slicks. I dont know what the 60 was because I rolled it in 1982 and they were not giving the 60 ft times back then but the best et was 11.94 @ 113. Ron