I bought a 454 some time back. Ran fine for awhile and threw a rod. Reinstalled the 305, original radiator, etc.. while the 454 gets rebuilt. Here's my question(s). This 305 is in good shape, as far as 305's go. I can't seem to get the adjustments on the carb correct. Truck has a manual trans. When trying to drive off from a stand still, I get some hesitation it seems before it "catches." A lag sort of. I am use to letting the clutch out and the truck moves! I set the timing at 4 degrees, then changed it to 6,8 10 and 12. No difference. Someone mentioned tweking the Q-jet so that the secondaries open more quickly. If this helps at least. Or tweaking something so that I get no hesitation. Any ideas or suggestions would be appreciated! Thanks! M4ME carb. I'm using a different carb for the 454.