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Old 05-22-2022, 03:44 PM   #139
Tim Ayers
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 6,181
Default Re: Spark Plug Protrusion into Head?

Quote:
Originally Posted by Bored&Stroked View Post
Hey Tim - what heads are you running? Newer Edelbrocks, or?

I would think you'd not need any extra spacers on the modern versions of the Edelbrock heads - as they're designed for 3/4" reach plugs. Just use a very small amount of anti-seize on the threads.
No, repop Cyclones. The hole depth is +/-.625". I tired to post a pict, but the file was too large. I have a set of new block letter Edlebrocks on the shelf in case I need to swap.

For a number of reasons, I would not have used these Cyclones if I was to do it again. They have some porous areas and are weeping at the two casting nubs on each head. I'm going to run some silicon silicate to hopefully stop those weeps coming from the casting nubs.

I wanted pre-war heads and these were originally made just before the war.
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