The HP manifolds didnt help because it was only a 2 barrel cant get much air in. In order for the HP manifolds to make a difference you need the have a lot of air coming in to have a lot of air comming out.
That may be so, but Im not going to believe it until I see it, and right now, Im not seeing it. I have a a few people tell when they swapped out the stock manifolds to the HP's, they felt no gain. But going from HP's to headers was a big kick in the pants.
This engine is for a circle track racer that has to run in a stock class and has to run a 2bbl carb. His SBC competition wont know what hit them.
