Tuning a Proform/Holley carb, what parts and tools?
Now set to about 7/8 of a turn out, and adjusted idle screw from all the way out. Idles about 900 rpm in park and 825 in gear.
Tired tonight but will get a vacuum guage and a helper tomorrow to set in drive.
Focus on this today. It should be less frustrating. Big accomplishment will be getting it so you can drive to work and around town without blackening the spark plugs.
See what it takes with the mix screws to get that best vacuum once warmed up.
Then,
if you're up for it, see what effect timing has. With the current 75 rpm drop timing and throttle position are probably pretty close to being on the money. So this is would really be an experiment for your own learning.
Do this by adding 2 degrees to the base timing, reset the rpm down to 825 in D or 900 in N (because the only change wanted is the timing and throttle position, idle rpm needs to stay the same) . Then readjust the mix screws. This should change the Neutral to Drive rpm drop. It may also change the low speed driving characteristics. So take it for a put-put drive around the block and note any change. If no change to either, then its right in a good spot for initial timing. If it the rpm drop going into gear reduces, the the higher initial is probably better. If it flat spots when
gently accelerating from a stop sign or say from 30 to 45 mph, then the primary idle circuit is now too lean or too much timing adding in as the rp climbs. Doubt that's going to happen, but if it does, go back to the previous setup. If it gets sluggish, then its too rich; again, doubt that's going to happen, but this is a test to learn. If I had the magic bullet I'd tell ya! But there isn't any. This is just a test to see the effect of increased timing which should allow a slightly more closed primary throttle position.
If you're not up for it today, that's fine too.
