hey! new to the forum so parden anything i say that isnt worded correctly, so ive got a 73 plymouth valiant with the original slant 6 225, car had a rebuilt engine back in 03. i bought the car from an older gentleman who let the car sit all that time. the car had 900 miles on it and i got it in may of 2015. the car was running totally perfect, some mechanic friends suggested i start replacing little things here and there as i wanted to up the car to be a semi show car. i want this to be a clean car. replaced the electronic ignition, ballast resistor, cap, rotor, plugs, wires, air cleaner, breather valve, tranny fluid change, oil change, timing is set at tdc, carb rebuild, and the car seems to want to run like garbage... idles fine but with any rev it acts like it wants to drop WAY below the idle rpm. ive tried swaping back to old parts that were working find to see if maybe a new part was bad, but nothing is working to fix the problem. the car starts, idles fine, drop it into gear and you get some stumble, drive up the street and the stumble goes away, try to hit the brake and it acts as if youre hitting the break in a manulal without pushing in the clutch. any suggestions? this thing is suppose to be my daily and was doing great before some supposed good updates
