tbacon38
Well-Known Member
- Joined
- Sep 4, 2010
- Messages
- 733
- Reaction score
- 1
I got two impco 425s on a 500 inch motor and it is far from lacking any kind of power you can't screw up propane just bolted mine on and turned it 7000 rpm no prob no adjusting or nothing, propane is a dummy proof fuel system you might gain a lil with efi but I have heard its like 10% dont think I would notice that