smokinquack Posted March 22, 2019 Share Posted March 22, 2019 I put a new HEI distributor in my 70 SS454. What do I set the timing at? Do I disconnect the vacuum line? I ran the required wire to IGN spade on circuit breaker, What else do I need to know. Quote Link to comment Share on other sites More sharing options...
monte70car Posted March 22, 2019 Share Posted March 22, 2019 I would start with the base timing for the motor. The HEI will provide a better spark to the plugs. I open my plugs to a wider gap similar to what the motors called for when the HEI came in. Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted March 22, 2019 Share Posted March 22, 2019 X2 to what monte70car said. I would also add 2-4 degrees advance if it is a stock engine. The factory was a little conservative back in the day. Lol Quote Link to comment Share on other sites More sharing options...
Leghome Posted March 22, 2019 Share Posted March 22, 2019 With SB 350 and my HEI I gap the plugs at .045 and set my timing at 12 degrees. I also have the vacuum line hooked up. Quote Link to comment Share on other sites More sharing options...
Blake350 Posted March 31, 2019 Share Posted March 31, 2019 as stated,starting at around 12 degrees advance sounds good - watch for pinging or run ,on make sure your not running too lean then if you have an adjustable advance you can play around with that as well..not surprised and tend to agree the 6 to 8 factory stuff was too conservative... Quote Link to comment Share on other sites More sharing options...
smokinquack Posted April 7, 2019 Author Share Posted April 7, 2019 Spring has sprung here so I'm able to get the car out of the garage. It runs but I dont have it dialed in. Once I get it idled down, (I think the Quadrajet still needs some tweeking) My timing light shows like 30 degrees advanced with the vacuum disconnected. hook the vacuum up and it dies. Ive rotated the distributor back and forth but cant seem to find where its suppose to be at. My timing light fires sporadically so maybe its bad, Any thoughts? Quote Link to comment Share on other sites More sharing options...
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