Cammer parts.

[RodKnock]

Originally Posted by Barry_R

The next item to address is the Coon heads. Bill Coon is at best a VERY CHALLENGING individual to do business with. I don't really like the guy, but I am able to deal with him. Most of the stories are true, and many others have not been published. With all that in the open I need to point out that I have sold many sets of the Coon Cammer heads, and despite the issues with "the man", there have NEVER been any problems with the parts at all.

With all due respect Barry, you're one of the leading engine builders and FE experts in the country, so if I were Bill Coon, I CERTAINLY wouldn't want to get on your bad side.

However, Jay Brown, another FE expert, one who has published at least one book on FE Intakes, had porosity problems with two pairs of Coon's Cammer heads:

August 26, 2012 - The Road to Drag Week 2012

"On the heads, they had to go back and forth to the welding guy four times before all the porosity got welded up; turned out that five of the exhaust ports and one intake port had serious porosity issues, with casting sand coming up out of the casting during the welding process. My machinist was driven nuts by these events, continually having to get the castings rewelded after one porous section was fixed, and the porosity just showed up in another spot. What a nightmare; so much for the quality of Bill Coon's head castings! These heads were worse than any of the Dove SOHC heads I've had problems with. On these heads I also had to have new guides put in, and the guides had to be custom machined because of the oddball guides used in the heads. The reason they had to be replaced was that the tops of the guides were significantly out of round; they appeared to have been hammered in during installation, and were distorted by nearly a thousandth at the top of the guide. You can't hone that out on a guide, so they had to be replaced. This is the second set of Coon heads I've had this problem with. Warning to the other guys out there who have Coon heads; check your valve guides! If your shop doesn't catch that during the valve job, you could be in for a nasty surprise when running the engine."

All it takes is a google search. No expertise required.