Don't even ask me to describe all the things I've removed and modified under the hood of my '87 YJ with the 258 I6. I can't even remember how it all evolved to the point it is at today. My one question is this:
If I were to run only one vacuum line to my distributor, no others spliced in, where is the best place to attach the vacuum line to? Manifold, carb, ported, unported?
I am presently still using the vacuum swithches up on the firewall above the valve cover in the distributor vacuum advance system. I don't understand exactly why, but the vacuum often holds in the line for several seconds up to over a minute until it releases and allows the idle to drop back down to where it should be.