Seem to be chasing a aggravating problem with my SBC. After a cruise when I wind the rpm's down to an idle and put it in neutral my motor idles at approx 1100 or so rpm's. After about 20-30 seconds it winds down to "Normal" idle speed of 800 or so. Once it winds down I can rev it up and sustain any rpm and it will come right back down and hold at 800 or so out of gear. If I am cruising and come down to idle it will idle around 800 or so in gear and then idle down also to about 700 or so..Not a major problem here just annoying. Any suggestions.


BH

Best way to do this? Can I just look down the bores?

BH

When it does it again just manually push secondary linkage shut some more and see if this slows it down

Had the same problem. Just like everybody said, the secondaries are prob hanging open a bit.......

fixing it is the problem. On mine, it turned out the shaft was worn very badly and would bind a little bit to keep it from returning...