I just installed a Holly 4 barrel on my 56 victoria with 292 and Fordomatic. I was running a 2 barrel manifold and a Ford 2100 2 barrel carb. The carb linkage and accelerator seemed to work just fine with this set up. The only springs I used were the two that are connected to the bellcrank. Now with the Holly 4 barrel and 4 barrel manifold, I feel like the bellcrank springs are too stiff for this new carb because when I depress the accelerator it feels mushy and delayed. I tried adding a forward spring and anchored it to the front of the intake manifold and the other end to the throttle, thus counteracting some of the tension of the bellcrank spring and it helped a lot but there is still some delay at the gas pedal. Do I need to just keep trying different spring sizes and length until I get the right feel at the accelerator pedal ? By the way, I called Holly and read them the list numbers on the carb and they told me it was a service replacement carb for a 289 mustang and was about 450 cfm . I put a new kit in it and observed that the jets were #55. Hope this is a good carb for a stock 292. It has manual choke. Any advice on linkage and springage would be appreciated.
George