I have a 79 SC. I have taken the oxygen pump and air conditioner out and I've installed a 74 exhaust system. John Walker did my transmission and installed 7:31 differential. I have installed webers, but am having trouble with my timing. I can get the car to run good at low rpms or high rpms, but not both at the same time. I have figured my distributor will do 17 degrees of timing. The vacuum advance does not do much, only a couple of degrees + or -. I think the distributor needs to be re-curved. Anybody have any ideas? Thanks. John
