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Nice. Thank you

I am, sorry

correct

Good info. thanks

got it . thanks

Only shows about 6-7 lbs at idle

So maybe I need the stiff spring so as not to open on idle which has low vacuum

So is the power valve spring what effects the idle?? on rich or lean. That's my last problem. I have the medium spring in now

Yes, I know. I'm going to run ethanol and check the plugs. we have 2 gas stations with ethanol free and it's tough to get to them every fill up, so i'll not run it anymore. The 68's may still be a bit rich. would you go down 2 more sizes or one?

It runs better on ethanol than non-ethanol, yes you read it right, My buddy says jet it for one or the other but difficult for both. Loads up worse on non-ethanol. I'm running NGK Iridium's. Should I try a standard plug?

timing is at 20. idle screws adj. power valve is medium or middle of three. floats are dead on. msd coil, runs like a bat but loads up a bit on idle

Running 68's in front and 75's in rears. I'm at 4500 feet with 10 to1 and headers. 408 engine. My plugs are still fairly black so, it's rich. what would you all suggest to try next> Its a holley 770 Avenger on an M-1 manifold. Go down 2 in front and leave rear's?? just want to get some educated...