CJ, I agree that the pistons are the biggest factor. I believe the 4 into 1 will also help to add HP. The port/polish, and balance from the Red Gold can't hurt either. I'm also told the cold induction sump will help too.
Regarding fuel injection for the RV7A if you get the high pressure pump from Vans do you need a different fuel line set up from the stock set up? Here at my home airport some guys also use a Duke pump for fuel injection on their planes. This is all new to me but I am going to start the fuel line install and I am leaning toward fuel injection so i don't want to put in any lines just to yank them out again later. Anyone offer me the readers digest version for the fuel injection system. Off topic Chad i see you put my cessna photo above from the gallery. Thanks for that gotta learn to do that for myself. Cheers gary (main Gear weldments just installed, thank goodness)
