Joined: Wed Feb 04 2009, 05:07PM
Location: God's Country
Posts: 5
I just purchased a 1973 Newport coupe with a 400 and A/T. The person I purchased this from changed the carb out and the car stumbles and doesn't run quite right -- and I don't want to burn up the motor because I was too cheap to take care of this properly.
So my question would be, I know this engine combination had originally a 2 bbl carb on it (which I want to stay with for ease of everything) -- would I be smart to go back to the original setup, or is there a better carburetor 2 bbl setup that I should gravitate to. I don't even know what the original carb is on the car because there's a poor quality "rebuilt" Carquest quality 2 bbl on it now. I would like to know what carb would work well on this 400 V8 (i.e. idle and run well into the 2,500 rpm range as well as hook up well to the stock factory linkage). I'm not going to be doing the quarter mile in this bad boy, and would just like a nice quality setup for my new ride.
Joined: Sat Nov 15 2008, 08:27PM
Location: NE Pennsylvania
Posts: 428
So - the carb is a stock replacement rebuilt unit? Can you get the carb make and any numbers off of it? I think that should have a Holley 2210. Perhaps your carb is just out of adjustment. The ignition timing could be incorrectly set as well. How are the plugs/wires/cap/rotor/PCV valve? You might also have some vacuum leaks. In some cases, the carb gets blamed for a poorly running engine but it is really something else.
Joined: Mon Jan 25 2010, 02:40PM
Location: Bethel Park PA
Posts: 846
Quite a few years ago, when I was just getting into working on cars, an old timer told me a bad coil will act just like a bad carb. That piece of advice saved me many times since then. Good luck