Guys, I replaced my old Offy manifold with a new Edelbrock 7193 for my 440 Challenger R/T. I didn't use paper gaskets under and above the valley pan, like everyone told me to do. I kept my almost new Holley 700cfm vacuum secondary carb. I now have 2 problems:
1) I have a wicked whistle (vacuum leak?) that seems to be coming somewhere from the passenger side. I have good ears, but it's so loud it kind of obscures where it is coming from. The whistle eases up as you put the engine under load. How can I find where the whistle is coming from. (please don't ignore this question at the expense of the next question).
2) I can't adjust the ignition timing to where I want it because the vacuum can is hitting the manifold. Someone said I have to rotate the distributor clockwise to get the vacuum can away from the manifold, and then move all the plug wires counterclockwise by one wire at a time? How do I do this so I can keep the ignition timing close enough to get the car to start.
Thanks for your help, John
On the whistle make sure its not the base of the carb or a loose vacuum line. At the manifold to head try a viscous fluid as it will rapidly disappear or blowback at you. Oil works real well but is messy. Soapy water may work depending on how warm the motor is. May be other fluids that would work better
A plumbers putty or similar may also work if its not too warm. will be difficult to find if its on the bottom side
On the timing thing, you can either move the oil pump drive 1 tooth, or do the plug wire thing. Moving the plug wire 1 place would require moving the distributor a corresponding amount. (DUH) How does one do that? Several different ways.
note where the rotor is with respect to the #1 wire in the cap when on TDC. Move the wires whichever direction needed (Clockwise to get less advance) CCW to get more advance.
If you are hitting the manifold it would indicate that you want more advance as the rotor rotates CCW
Once the wires are moved,
Rotate the distributor until the rotor in close to the same position noted above in red. Should be close enough to start
