Hey guys I'm going to the dyno next friday and I'll try it both ways. The problem is that the vac advance at idle with the consaant vacuum forces me to run extremely low initial timing. I appreciate everyones input. I'll let you know how it turns out. the engine is a 302ford with AFR 165 heads, demon 650dp, 1 3/4 headers, MSD ready to run unit with 6AL. I've never used the timed port and I thought because it has no vacuum pull at idle I could increase timing. Last Trip to the dyno 273 RWHP and 298RWT. I'm shotting for 300 hp an 300tq at the wheels. The motor seems to law down above 5000 rpm.

Thanks S10 and everyone for your input