Hi Cliff,
Need advise on Rods and Jets for my 69 Grand Prix 428 370 HP, TH400 all stock. Q-Jet Part 7028276/1717 that's running a bit lean especially on the primary circuit just off idle. Runs better when cold and choke is closed. I live in California have to deal with rotten ethanol blended gas. Have already installed Cliffs Kit with HP Pump. Also will need new correct base gasket.
Primary Jets .073"
Primary Metering Rods 41,
Secondary Metering Rods Market BE.