Keith, I didn't think about the 1 5/8 headers and what restriction that may have. I was running tti headers on mine. I figured a fully ported edelbrock may be similar to a indybrock. At least many argue that the flow #s are about the same. But moving the pushrod pinch may have an affect on track times, but not flow bench? I am still gonna go out on a limb and guess another 40-50 hp.
