I would like to know what I should try to achieve in afr readings, generalizations. I have been dealing with a "running warm "problem last summer/fall and I think I made progress, but it got too cool to tell or really drive it more. I installed an AEM wide band with the o2 in the right collector. The little bit I was able to drive it it was way lean.I adjusted the idle to 13.8-14.5. Cruise is alittle leaner,and if I jump on it hard it goes lean off the scale! It may come back towards richer a little but by now I have to keep my eyes on the road.
I have a new in car vacuum gauge witch reads higher than the value I used to select my power valves, so that may help.When it gets warmer out and I can drive it some more and I get used to what I am seeing on the gauges, I will make some changes.I'm thinking more main jet to bring cruise into line and power valve channel restrictions for wot(less restrictions).
The carbs are a pair of 1850's on a M.R. intake,Edelbrock heads,CJ size valves,CJ crank,Auto tech pistons,
.017 427. cam is 258@.050 .6-.610 lift. 20 initial with 35+- total. 108 lobe separation.
car is a 64 Galaxie ,close ratio top loader and 4:86 rear gear.
Mainly looking for guidance on afr ranges,but any tuning tips will be greatly appreciated. Thanks, Tom.