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Re: Rough idle at start.
It appears that the fast idle cam is in the midway position. Which is good. Meaning that you should be able to turn the fast idle screw in and raise the idle to help smooth things out.
First photo see your fast idle cam position.
Second photo see the cam completely down.
Fast idle adjustment screw is circled in last photo.
Try turning the fast idle up before changing other settings. The RPM should be in the 1000 to 1200 range.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. 
RIP Bob Parks.
1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377
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