The FSM calls for 89's in the primary's of the stock 600 AFB. I will blow the Holley apart tonight and see what I have in the primary's and secondary's. I picked up a 6.5 power valve for it as I don't know for sure what is in the thing off the shelf either jet-wise or PV wise. I know I am getting closer though. Anyone have a idea for jet sizes for a Hi-Po 273 out .040 using a Holley 4160 vacuum secondary carburetor? I have the spring kit for tuning the secondary's when I can actually put it under load. I need a chassis dyno in my garage-----:)
Hot in the desert heat------DR------:)