I thought I’d ask about what I think is some untapped or missing giddy-up with my poly after an extensive and expensive overhaul. My car is a ’63 Fury with the PB 727. Among the mods as I can recall offhand:
Eddy 4bbl, solid lifters, cam (262 deg, lift .450), bored .60 over, headers, 3” exhaust with X pipe, flow masters, 340 rods. I had changed the rear from 3:23 to 3:55. An issue is the distributor I’m still futzing with. I’m running full mechanical as so far the vac advance adjustments get engine missing at various RPM’s; but runs smooth without vac advance. I’m now aware that the 3” pipes were a mistake for this motor and build. I’m looking at a quieter exhaust reducing the mufflers to 2.5”. The TC was changed out to a later era mopar with I think around a 2500 stall (got to double check this). I installed a mopar electronic ignition 15 years ago that’s unchanged. (Before this build I had put on a 4bbl and dual exhaust).
The rough estimate is around 325 HP setup. Anyway, my ride seems lethargic off the line; but more power at higher speed. In fact, as I recall the giddy-up off the line, it doesn’t seem better than before all this chit. Hope this offers enough info…in case anyone has thoughts on garnering some better performance. Thanks!
Eddy 4bbl, solid lifters, cam (262 deg, lift .450), bored .60 over, headers, 3” exhaust with X pipe, flow masters, 340 rods. I had changed the rear from 3:23 to 3:55. An issue is the distributor I’m still futzing with. I’m running full mechanical as so far the vac advance adjustments get engine missing at various RPM’s; but runs smooth without vac advance. I’m now aware that the 3” pipes were a mistake for this motor and build. I’m looking at a quieter exhaust reducing the mufflers to 2.5”. The TC was changed out to a later era mopar with I think around a 2500 stall (got to double check this). I installed a mopar electronic ignition 15 years ago that’s unchanged. (Before this build I had put on a 4bbl and dual exhaust).
The rough estimate is around 325 HP setup. Anyway, my ride seems lethargic off the line; but more power at higher speed. In fact, as I recall the giddy-up off the line, it doesn’t seem better than before all this chit. Hope this offers enough info…in case anyone has thoughts on garnering some better performance. Thanks!