440 duster weight, 3440 LBS

This is just an example of how weight will effect thinks, A guy i knew out in texas had a 74 Duster, had it for 15yrs., raced brackets almost every week for a solid 10 with the same engine & never tore it down, Over the years he lightened it up with everything you could get at the time. His race weight was just shy of 2800 lbs., like 2796, this was the combo & what it ran.

.030" 383, steel crank, 12.5 compression, 915 heads, mild port, stock sized valves
I forgot what intake i'm thinking a Team-G Single, the carb was a basic 850dp, 4.56 gears, 5K stall, .590 cam.

In Amarillo, Tx the track altitude is 3700ft., Car ran consistant 11.20s, ran a few times in the teens, he went to an event in Dallas once, rolled it off the trailer, didn't touch a thing, Ran 10.6s, One time he went down to baytown, On the 1st. run it left so hard it twisted the DS & snapped it in 2, Now this was just a little ol'e 383 old school.