Carbking,
I have a 270 GMC. I have access to a Zenith 228BV12C (Out line 10168) that I am thinking of buying. Problem is, this Zenith has a 28mm venturi and from your posts I learned I need a 33mm venturi for this carb to work properly. Also this carb has a 29 Main Jet, 13 idling jet and 13 accelerator pump jet. Is there a source of replacement venturis and replacement jets? Would you recommend this carb? It is NOS and $125.
Thanks,
David