Posted by rickyracer (IP: 209.20.170.37) on June 03, 2000 at 00:11:06:
In Reply to: Holley jetting posted by Russ on June 02, 2000 at 22:32:15:
I suppose you're talking about a 600CFM vac. secondary size, jetting should be around 62 in the primaries, but also make sure your choke butterfly is also open all the way, If the jets that are in it now are around 64 drop them down to 58 and drive it for about 200 miles and check the plugs again. after that only drop them about 2 numbers at a time. Also make sure the floats are set proper or it may be floading out from the floats already, Check the floats and choke valve before you play with the jets.
: I need a base line on what jets to use in a 1850 holley. I bought it used off of a 383 Chevy motor so I think it is jetted to big for my mild 289. Can anyone give me a place to start. I know nothing about carbs or tuning. The plugs are black and wet. The engine has about 50 miles on it since the rebuild. It also quit running twice today once like it was running out of fuel(while driving at speed), and the other as I was pulling out from a stop. Too much fuel? Any help would be great thanks in advance. Russ