Weird noise after 4 speed install

plumkrazee70 said

Yes, so the MSD distributor is locked out (it has no weights or springs) Fitech says to do this when it controls timing.

My idle timing is 18* I have the full advance set to 34* as a base line. I know the balancer matches the handheld numbers, I checked that right after the cam was broke in.

The cam selection I chose was 2. Haven't tried it on either other yet.

Click to expand...

Cam 2 is probably right. It only changes fueling, not idle or pumpshot so just leave it for now.

I'd put your 1100rpm timing settings at 20 for now. Then tweak the stuff I mentioned before. Don't be afraid to cut them in half. See if it idles smoother. Also try tweaking the idle mix from 13.7 to 15 in 0.1 increments. I'd guess your cam would probably be happy around 14.5 at 18 deg. I also wouldn't hesitate to bump the timing to 20 or 22 deg either. Try the afr sweep at 20 and 22 to see if you notice any particular setting runs best.

I've run as high as 28 at idle and only dropped it some to give the spark stability more breathing room since it felt a little rough sometimes when the stability spark would add more than 3 degrees.