Quote Originally Posted by HiboyGal
Yes they have been plated )sealed off) already by last owner, who reverted to that to solve the problem. He tried to make the progressive linkage work, but the car would not idle right, it ran OK once going faster. He ran out of money and gave up LOL. He did not have money really and that is why he sold the car when he moved to Northern CA. he couldn't keep it financially. Anywhoo, this is WAY down on my list of "to do" things but I like to start investigating ahead of time so i am ready when the funds are.

Engine runs good, never stalls. It does seem to idel a bit rough (possibly - but not sure) and may be eating up too much gas (about 10 to 12 miles per gallon). Otherwise powerful and pretty fast.

I'm with Mike P, what is the vacuum reading, the idle speed and where are you sourcing the gauge from?


One experiment you could do would be to try each carb in the center position with the outer two carb mounts blocked off by a plate.
Sounds like you already have plates that would work.

If all the carbs function ok why not run them with straight linkage?
I've had many different multi-carb setups and ran them all with straight linkage.

Progressive linkage is ok . . . if you get a good one . . . there's a lot of junky stuff out there posing as progressive, but some of it is downright dangerous.
One setup I see now and then is nothing more than bent wire for the sliding part.

You can make a high quality straight linkage for about $30. - $35. for parts and a little time with a hacksaw, grinder and die.

Depending on what you're running for a throttle control (cable - ok, rod- best) you could make up a nice throttle rod setup to match.