carb rebuild

[pro88]

You mentioned that it's running too rich all the time? Have you checked the condition of your power valve? You probably should be running a 6.5 or a 6.0. check to see if the power valve has a hole. As for jetting, start with 70's in your primary. Check how far you have to screw your air/fuel mixture out before your rpm's change. It should only be 1 1/2 to 2 turns. When you change your jets, go 4 sizes up or down at a time. I'm running a very healthy '69 351W in my '88 and I ended up with 74's up front and 79's in the rear in my Holley 600. I'm also using a new 6.5 power valve. I was having the same kind of trouble your having at the beginning of the 2000 race season. My car runs 11.80's with a C-4 and 3.73 gears. I don't really think you need to rebuild your entire carb.