HEI Distributor

[Kevro_N_Chevro]

While we are on distributor tonight. I need some easy advice. I have the ESC distributor, I have replaced the factory distributor the ecm all sensors and all. I have a HEI and ready to swap it. Performance reasons that I have weighed. However the easy question for you all is where am I getting the vacuum advance from to supply the HEI?

 

[75gmck25]

Are you now using a carburetor? Most have a full vacuum and a timed vacuum port. Either one will work, but idle tuning is slightly different because connecting manifold vacuum to the vacuum advance would increase timing at idle.

Bruce

 

[Ricko1966]

Manifold vacuum. What performance advantage do you think you'd get by losing ESC?

 

[Kevro_N_Chevro]

Better spark? Don’t really know I guess I’m just going off of recommendations to get rid of that system. It was throwing a 42 code all the time. However I changed the 02 sensor and it doesn’t happen as often. This is a TBI motor

 

[Ricko1966]

If it's working leave it alone. ESC will allow more initial timing without detonation. Better performance, better milage