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Jeff, 7042210 indicates a '72 application but I don't know the specifics off the top of my head. It's possible that 1 vacuum port in question is manifold vacuum and the other is ported; hook a vacuum gauge to each with the engine running at idle and the throttle blades closed. If it's manifold vacuum you'll get a high reading and ported vacuum will give a very low reading. You can use either for your advance as they're nearly identical once the throttle blades open; use whichever your engine likes best. The torque specs sound good but I'm not sure about that pigtail thingy, though. ;^) Brad O. > Ok, got the carb back and does it look nice. As far as the carb number, > that is a little baffling to me as there are numbers all over the damn > thing. Here are a couple possibilities, "42742" and "7042210QE 0872" If > neither of these are the correct number, any hints where the carb number is > located would be helpful. On the front of the carb there is a vacuum port > that was blocked up with rubber hose and a screw in it. The guy at the carb > shop suspected it went to the distributor but that is piped off the side. > Any ideas on what is might be for? Here is a picture of it, > http://people.mn.mediaone.net/addss/plugport.jpg & > http://people.mn.mediaone.net/addss/unkport.jpg Also I noticed a small > pigtail clip just hanging in the air that is coming from a small condenser > looking thing mounted to the back of the coil, here is a pic of it, hope > you can see it. http://people.mn.mediaone.net/addss/pigtail.jpg > > This pic shows the lower or closest port running off to the distributor and > on the front the plugged up port > http://people.mn.mediaone.net/addss/vacport1.jpg > Where should this go? Amazing the car runs with all this stuff > disconnected or mickey moused! > > In the service manual I can only find them torqueing down a different > looking carb where they say to tighten all bolts first to 36 in. lbs. then > finish tightening to 144 in. Lbs. Does this sound correct? ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
