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Username Post: Vacuum Advance- how is it supposed to work?
prgm_mgr 
Member
Posts: 546

Reg: 07-06-05
05-04-10 11:10 AM - Post#1909773    
    In response to steeler_fan

Hi all


I have a 58 Impala with a 348 stock motor and stock distributor. When setting up the initial location of the vacuum advance, does it matter which position it is in?

The book I am using says to start with the can at approximately 45 degrees to the engine, go back about 1/2 inch and move the can forward until the contact is broken (?) (I'm using a light bulb connected to the coil etc.When the light goes out, I'm in the right spot)

Anyhow, if I follow their advice, the can winds up directly over the distributor hold down bolt, making it difficult to tighten down without moving the distributor out of alignment.

Can I move the can closer to the fire wall such that the it is approximately 90 degrees to the engine, again adjusting it so the contact is broken? This leaves room to tighten the bolt.

What I think this also does is move the #1 spark plug wire spot on the distributor from the first spot left of the little door on the cap to the second. The rotor remains roughly at 6:30 on the cap.

Does this make sense?

Thanks for your advise
Mark


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