[maclu24es]

Hello; I have been lurking on and off ,and have a question about exhaust valve lift in my 97 s-10 5-speed 3.73 rear truck. I bought it for 400 and rebuilt engine, I cut intake and exhaust gaskets to fit and smoothed intake runners and cleaned up cast iron exhaust manifold for higher flow. I would like to learn about using higher or lower ratio rocker arms to increase millage or power or move curves around, I am using stock cam and all stock parts on 2.2 liter except I instaled electric fan. I also have 3.42 posi-track rear to drop rpms . I have instaled the largest diameter stock tires 235-75-15's. thanks mac.