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Old 10-11-2022, 01:53 AM
LT1vette LT1vette is offline
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Originally Posted by big block bill View Post
scott,
first thing to check is the choke blade all the way open (straight up and down) when it is totally warmed up?
If not, the choke thermostat is set to tight or something is binding. If so, the fast idle cam on the passenger side is either sticking or miss adjusted. A good starting point is when the car is totally warmed up to engine temperature and blowing hot air out of the heater, the choke blade should be straight up and down, set the high speed idle cam at it's highest point and adjust the rpm to 1800 rpm. You can look up all the specs of your carburetor by the carb number on a google search. Hope this helps.

Bill
1800 rpm.....???
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Old 10-12-2022, 12:49 AM
Big Block Bill Big Block Bill is offline
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Originally Posted by LT1vette View Post
1800 rpm.....???
Yes 1800 rpm is the most common setting on a warmed up, choke off, fast idle cam setting on the highest step. I went to a GM Class back in 1978 on drive ability and that's what i learned. It also had me buy books (2 - 10 inches thick) covering everything carbureted in the GM line from 1938 to 1987?. I have since sent them all to Eric at Vintage Muscle Car for his collection, he is the person who deserves to have this history.

Bill
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