I've rebuilt and modified my 302. With flat top pistons, milled deck and milled heads, ported with 1.94 in. and 1.65 ex. valves , a performance cam, Mallory Hy-fire ignition and an edelbrock 650 a top a 289 intake manifold. It runs like a branded calf :evilsmile Here id the problem. After three failed emission test attempts, they now require an under hood inspection here in lovely IL. Here is where I need your help. I've tapped the hole in the Manifold for the Exhaust gas to EGR plate passage, and found a 4bbl EGR plate to fit. Unfortunately it's been years since the vacuum hoses were used and I'm not sure where they all go. The Car didn't come with a Vacuum amplifier, it does have a 2 port vacuum switch and a 3 port Vacuum switch. And the distributor has only one vacuum port. And No automatic transmission. I have the original 8 vacuum hoses (long and short) and 2 Vacuum Ts. Any help, diagrams, digital pictures, would be appreciated. Thanks
Ok, not even California requires emissions testing on cars that old the way I understand it, but Illinois does. Now THATS bad! I love Georgia more and more every time I read a post like this... :rant:
Jamie tenn. has emissions testing for my 72...just got it inspected...lucky for me my car runs sweet...passed with flying colors.
Ya OK emissions suck, and yes CA does test all the way back to 68. . .but I digress, I think I have it figured out enough to fool them but I would really love to view someones stock set up. So far I got the Manifold vacuum feeding the 2 port Vacuum switch then on back to the EGR valve. Then using one of the 2 T's , I ran Vacuum to the bottom of the 3 port from the manifold run to the 2 port. Then the middle of the 3 port goes to the distributor. The top of the 3 port runs to the carb for vacuum. . . . It all looks good and might even work right, how ever I still have one T and 2 hoses left over. If anyone has a digital camera and time please give me a peak. Thanks
Got Chiltons and 1974 Ford shop manule Both are a bit vague and mention a Vacuum amplifier and a duel port vacuum advance distributer, neither of which came with the car. . . Using Chelton's discription of the ported vacuum switch I designed the set up described earlier.
