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Re: need some carb help...I think
Just trying to point you in right direction. Make sure that you don't have a problem with a vacuum leak. Check all ports that have been plugged off for a while with a plastic or rubber plug to make sure that they are not cracked or leaking. Rubber hoses will dry and crack over time. Make sure you have the distributor vacuum line hooked to a ported/part time source on carb. Late sixties early seventies when thermo vacuum switches and delay/part time vacuum smog control came in to play it was a year to year change as to what was the hot ticket. Our trucks and engines fall right in the middle of it all. With 30+ years to mix and match it is easy to end up with a combination of parts that are not compatible. So if you don't know for sure that it is all 100% original do some research and find out what you have and if it will work before spending a lot of money and never getting it quite right. This is not an answer, it is a guide to try to help keep you from buying a $300 carb. that you don't need.
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