SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: ka0tyk on June 13, 2012, 03:30:48 PM

Title: what spark plug and gap are you bbc'ers running?
Post by: ka0tyk on June 13, 2012, 03:30:48 PM

i usually stick to a basic plug set to .040.  run of the mill bbc here

i gotta pickup some plugs and some oil tonight and get ready to start 'er up.

Title: Re: what spark plug and gap are you bbc'ers running?
Post by: HONDO_JET on June 18, 2012, 08:42:29 PM

I run the Accell 274's I believe, gap .35

Title: Re: what spark plug and gap are you bbc'ers running?
Post by: Nixonnow on June 18, 2012, 09:03:16 PM

Make sure you get the correct "reach" plug for your heads. I have the 049 oval ports and run ac delco R43t, which are the short reach.

Long reach=.750
Short reach=.460

Title: Re: what spark plug and gap are you bbc'ers running?
Post by: crewchief22 on June 18, 2012, 10:00:17 PM

Been running Autolite 26 in my 049 heads for years.  Gap varies (.035-.040) depending on what ignition I'm running.

Title: what spark plug and gap are you bbc'ers running?
Post by: Beaveretriever on June 18, 2012, 10:49:04 PM

I run .018 in mine. 1966 396 heads. :-). But I run a mag