Originally Posted by borgiewindsor
hi am after a fact sheet or somethin on how to self tune holley carbies my windsor is running real rich when rev it it shoots unburnt fuel out somthin cronic any help would be much appreciated
what sort of holley? has the problem just started happening or is it a new carb to the car. could be an ignition problem too.
when I brought my 465cfm 4150 series (great size for 302 IMO) holley it had No60 jets it it which was way to rich I looked up the holley website and fount the stock jet size 57 put them in adjusted the float bowls and the ego sensor showed stoic throught entire rev range. I did need to put a different accelerator cam in to allow for the auto and heavy vehicle.
here's a website that might help http://www.mortec.com/carbtip1.htm