Need tips for launching.

Hi All,

After putting in a lot of work getting my 1973 Duster nice and solid (and safe), I'm getting ready to take her to the track and see what kind of time she can post for the 1/4 mile. Only problem is, I cannot seem to get this car moving without spinning the back wheels! Got fairly new BFGs - I cannot afford slicks so that is out. I am practicing on a stretch of highway. (I have never drag raced anything on a track before.)

318 w/ stock heads
Edelbrock 4bbl
340 exhaust manifolds and dual exhaust
Stock 904 transmission
TA Radials: P225/60R15

Any tips? There is only one night I can go and don't want to waste runs skidding around.

Thanks!