stumbling on take off

[Charger72SE]

I replaced the spark plugs, rotor and distributor cap and now my car stumbles a bit on acceleration.  I made sure the ignition wires were well seated on the plugs and cap. and during the cap swap, made sure the ignition wires went to the right spot.

any ideas???

thanks much!

[MNMopar]

How old is the timing chain? a loose one will hesitate to engage correctly. Or carb float. But I'm having similar problem so just my 

[Gabmando]

Stumbling off the line can also be caused by a vacume leak or a bad or incorrectly adjusted accelerator pump.

[Doc]

Or a BAD acc pump ! ... do you know how to check-that-out ?

[bordin34]

What carb do you have? Is it a Hollley Street Avenger?

[Charger72SE]

thanks for your comments - the carb is a Holley 4160, original model for the car

I think I threw off the timing a bit when I replaced the distributor cap, it's a really tight fit with one of the front mounting brackets (see pic).  It runs pretty rough at stop lights as well.  I also noticed while changing the rotor & cap that the distributor is pretty ugly, so I ordered a rebuilt distributor which goes in this weekend.

the carb was rebuilt 2 years ago by a pro, so I don't think it's the carb.  I'm waiting to see how the new distributor works out.  I should have replaced it when I rebuilt the engine 3 yrs ago.

we'll see what happens!