My 63 Polara 500 has an all original 383. It runs and idles smooth, but when when I give it some gas, it hesitates like it's going to stall. I can gently coax it to get going. I just got the car in December so I'm not real familiar with it yet. Any thoughts on how to get it to respond? Thanks. - Jim Jim Altemose, Long Island, NY '63 Polara 500 (Max Wedge) '63 Polara 500 (383) '65 Belvedere I (Street Wedge) '71 Bronco