UPDATE:

I fixed my 50mph-WOT throttle lean spike with a larger squirter on the secondary side. Now I have no lean spike at idle to WOT (which was spiking to 16.0) or 50mph-WOT (which was also spiking16.0). Now my A/F goes richer as soon as I hit WOT.
I need help on this next one. I ran into this ealier into this thread but now I am ready to fix it. My A/F ratio from 60mph (apx 3100rpms) up to 4000rpms is too rich for my liking (14.0-14.4). So I tried to lean out the HSAB's to lean it out. I tested with my .036's and then swapped in .039's with no change at all in A/F reading in this range.
I am guessing that I need to lower the front jets a couple and see if that helps it out. This is my latest A/F readings taken on the same day but one was at 75 degrees and the other at 92 degrees.
Note: I was having cruising readings at 40-45mph at the 15.5 range so I wanted to richen that up just a bit and I swapped my .067 IAB's for a set of .064's and that richened up my cruise quite a bit. But for now I am going to just lower my floats a tad and recheck my readings.
75 deg (.036 HSAB's, .067 IAB's, "D" A/F=13.6-13.8 & solid idle)
30mph=14.0, 40mph=14.2, 45mph=14.4, 50mph=14.8
55mph= 14.8, 60mph=14.4, 3500rpms=14.4, 4000rpms=14.0.
92 deg (.039 HSAB's, .064 IAB's, "D" A/F=14.0-14.2 & rough idle)
25mph=13.6, 30mph=14.2, 35mph=13.8, 40mph=14.2, 45mph=14.4, 50mph=14.6, 55mph=14.6, 3500rpms=14.0, 4000rpms=14.0.
So you can see I need to lean out the cruise just a tad (lowered floats) and then I need to lean out my 3100-4000rpm range with what I am guessing a primary jet change.
Let me know what you think.

Something that I have noticed is that my in D idle A/F is richer than what I have read on the net. When I have my in "D" A/F set at 14-14.2, the idle gets rougher and my vacuum drops. But if I have it set in the 13.4-13.6 range, the vacuum is solid and it idles smooth.

Thanks

Last edited by YO7_A66; 09/03/11 05:21 PM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)