plenum spacers

I put a spacer on today, along with a new carb. I wish I wuld have done one thing at a time, so as to tell the improvements apart. I had an 800 Holley DP on my small block stroker, Eddy air gap dual plane intake. I switched to an HP series 780 DP, with a 1 inch four hole phenolic spacer. The motor is so much more responsive now, even though it is a hyd. flat tappet cam and I dont spin it that high, it feels alot stronger on the top end. Overall, big improvement.