[PHMCobra]

Similar problem with starting my Cobra (BDR 1360, Roush 427, 550 HP with Holley Carb). The Cobra ran fine for 700+/- miles and then was hard to start. One morning, the car did not start immediately. Upon pumping the petal many times, the car would start and all ran fine. However, I did smell gasoline in the engine compartment. I opened the hood and noticed gas puddling in the in the intake manifold. Further inspection found the problem was a stripped bolt/thread in one the four screws that hold the front carburetor bowl together. The leak was small, but drained the gas from the bowl over time. Bolt/thread fixed and all is good. Check front bowl for a leak! Hope this helps.