Unless the exhaust side of your Windsor heads are ported you should run a dual pattern cam with at least 10 degree more timing on the exhaust side. Also, to reccomend a cam we need more info. What stall speed are you going to use? I need header size and approx lenght of tubes, plus I need a complete lay out of the exhaust system. Car tire diameter and rear end gear ratio information will help too.
I ran a number of similiar style cams through your combo on my Performance Trends Engine Analyzer. The one that seemed to work best was a Crane Powermax H-278-2 (222-234 .498-.527 114L/S +5) It made over 300 ft/lbs from 3000 to 5700 with a peak torque of 341 at 4400 RPM. The HP peak was 325 HP at 5700 RPM. It made more torque and HP than the ISKY cam did everywhere above 2700 RPM. With your 3100 stall the Crane would be quicker. It even has 5 degrees less overlap and will pull slightly more vacuum than the ISKY. I hope that helps.
Yup. The Comp made a little bit more HP than the Crane but it was at the expense of low and midrange torque and it had a couple of inches less idle vacuum too. It was better than the ISKY though and would be my choice out of the two, especially since you have a 3100 stall converter.