I was looking at the manifold tracing the path of plenum and it seems to somewhat mix to where some of the rich plugs mix with the good ones but I may be mistaken409a unless I counted wrong it looks like 2,5,and 8 are all on the same plane of the dual plane intake.
That’s the next step I’m gonna try before getting too excited about anything else. Distributor is a new pertronix with vacuum advance I have hooked to full manifold. When I was dealing with the shit speedway based on the secondary carbs I went through the entire intake carbs etc hunting for any vacuum leaks. With the new bases she’s sealed tight, no leaks anywhere that I have been able to find. Sprayed carb cleaner all over testing for leaks while running and nothing.Have you tried a run as before,but sans air filter housings at all? This would tell you if the air cleaner housing itself is causing this richness.As to the feeling of the timing retarded at a cruise,the solution to that is vacuum advance,and it should be hooked to manifold vacuum.John has a good point in that half of that engine is nice and the other is pig rich.Possible air leak on the "lean" side?
Idles fine. Once I got the new GOOD secondary bases installed we did a full tune on the motor. Idle mixture screws, timing, idle screw etc. Like I said the motor runs fine for the most part other than this slight miss which I would think is a result of these plugs looking shitty but why they are still has me wondering. Throttle response is great, acceleration is strong it just has this stupid little miss. Ah the joys ha haHow is the idle? Will it sit and idle?
Remember the old spark plugs cleaning blaster ????? Our shop had one and it cleaned them with a blast of fine media,stick it in the rubber faced grommet hit the button and a blast of air and media and very clean.
Thank you James, that gives a place to start looking. Without a two barrel in front of me I'm a little lost but I'd love to take a crack at that carb. I used to love working on and modifying the Rochester 2G's.View attachment 70767
With the intake runners traced out, it looks like you have a problem with the left side of the carburetor.
Ray we loved BF32's.Long time ago I bought a set of Champion plugs and installed them in a 283 engine. Ran like crap! Changed them out for AC and problem went away? Just saying
For the FE,s?Ray we loved BF32's.
Robert