Originally Posted by VITC_GTX
My daily driver (’57 BelAir 2dr hardtop). ... even though the carb was having issues, choke didn’t work well and was frequently idling high, accelerator pump didn’t work so it had a hesitation from a stop... I finally took the time to replace the carb with an Edelbrock 1403 (500 CFM with electric choke).

With the old carb the car would slightly miss at about 40-45 but you could barely feel it.

I’ve replaced the plugs..

This could have been an issue before I changed carbs as the last carb had issues that may have been masking other issues.

Thoughts on where to start?


How confident are you the old and new carbs are set up correctly? .. if you aren't confident, I'm tempted to suspect the carbs..

Can you repeat the problem with the car sitting in your driveway and you manipulate the throttle?
If you can, watch the carb throats and see what the fuel is doing.. Flooding or leaning out?
Or do you HAVE to be on the road.. ?
- Art

65 Satellite hardtop 361/4bbl console 727 2.76
67 Satellite convert 383/2bbl column 727 3.23
67 Lancia Fulvia Sport 1.3 Zagato. Alloy body, 1.3L V4 DOHC 4-spd
67 Lancia Fulvia Rallye 1.3. Alloy panel, 1.3L V4 DOHC 4-spd
71 Alfa Romeo GT Junior 1300 Zagato, 1.3L 4cyl DOHC hemi 5-spd
82 Alfa Romeo GTV6 2.5L SOHC hemi V6 5-spd transaxle
75 Maserati Bora US spec 4.9L DOHC hemi V8 5-spd ZF
77 Maserati Khamsin Euro spec 4.9L DOHC hemi V8 5-spd ZF
07 Aston Martin DB9 6.0L DOHC V12 6spd transaxle