186 heads

[z28z11]

If I was really energetic I would look back through my old Hot Rod mags and find the article for the company that made the kits to plug the original plug holes and redrill with the angled small plugs, which mimics the configuration that GM started in the early 70's (better flame pattern during combustion in the chamber). Screw-in inserts and a drill bushing/fixture to drill the holes, wish I could pinpoint the year and look it up. My Hot Rod subscription started in '70, still have them all (like an idiot) up until 2005, give or take a year or so. 

Regards,
Steve

One 'like an idiot' to another.. ..  I Have THOUSANDS of Car magazines (back to around 1978)  I finally stopped HRM, CC, and PHR a few years ago but all those magazines organizes mostly by year/name.  I need to let them go, but can't imagine trashing them!  Woe is me...   

It's a good thing magazines have no inherit magnetism - if that was any different, true magnetic north would be pointing at Tennessee for all the Hemmings, Super Chevy, HRM, and others stored here. Downright fire hazard -

Steve

[z28z11]

For those of you that considered me to be insane, presto ! I knew I could find it if I looked long enough. Now, if i could only find the article that showed how this was done, I'd feel vindicated -

Regards,
Steve