Jump to content
Sign in to follow this  
smokinquack

HEI timing

Recommended Posts

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.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

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. 

Share this post


Link to post
Share on other sites

 

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... 

Share this post


Link to post
Share on other sites

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?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...