This site gives some good information
http://www.reptilechannel.com/snakes/breeding-snakes/whipsnake-coachwhip-racer-breeding.aspx

Basically they incubate like rat snake eggs. The temps should be around 78-83 degrees. Use vermiculite, perlite, moss, or hatchrite as a substrate. Pretty basic as far as snake incubation. Getting the babies to feed is the hard part...
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1.0 sumatran short tailed python
0.1 ball python
0.1 rosy boa
0.1 corn snake
1.0 mexican king snake
1.1 buttermilk racers
0.0.2 broadbanded watersnakes
0.0.1 yellow bellied watersnake
0.0.1 ribbon snake
0.0.1 western cottonmouth
0.0.1 rattlesnake
1.0 broadhead skink
1.0 bearded dragon
1.0 leopard gecko