Pertronix 1181 stock 72 350

[Rich69shortfleet]

Originally Posted by Rust_never_sleeps

For those of you keeping score at home....

Bingo. I've had my 1181 connected to a resistor wire for 25 years and have never had a problem.

To the OP: Yes, you need a properly functioning vacuum advance. Two additional comments on vacuum advance: 1. Works best connected to manifold vacuum instead of ported vacuum and 2. Not all vacuum cans are the same, make sure you get the proper one for your particular application. Depends on the vacuum signal your engine makes at idle and full throttle.