2015 Rules

[SSDiv6]

Originally Posted by Marlin Bogner

Oct 31 was the first that I heard of the SS/CS head problem. but what problem? I feel that GM, Ford and Mopar were very even with GM having the slight edge. We all Crack heads. I have had to back out of CFM for reliability, Why can't GM? We are using the basic W-2 head which came out 40 plus years ago. there is nothing else. Again, GM racers get there way. How many Ford racers knew what was going on? I thought we had the class back on course when we stopped the GM racers wanting the aluminum heads.

Marlin, I was building a Ford Mustang to run SS/CS. I learned about it from my cylinder head guy on November 2013. He was already building a set of GM LS cast iron heads for a customer to run in SS/CS. I also posted about this issue earlier this year on 01/14/2014. You can read about it in Page 4 of the link shown below.

http://classracer.com/classforum/sho...+degree&page=4

I called Pat in Glendora and informed him the LS cast iron head is a truck cylinder head only available for a few years. He told me that as long it was an inline cylinder head an had an OEM part number, it was legal.

Also called Bruce and he confirmed the upcoming allowance of cast iron aftermarket cylinder heads in the class. I made him aware of the 14 degree cast iron GM head, same as used in Nostalgia dragster and he did not comment.

The Chevy Bowtie cylinder heads are available in 3 different volume sizes. racers are using the larger volume size. The cylinder head is used in many circle track classes and this is the first time I hear about cracking issues. My own cylinder head guy says it is just an excuse to justify the use of aftermarket heads by GM racers.

As I read the current proposed rule, if what Venice stated there are only specific heads allowed. Currently the amendment says: "Aftermarket iron heads permitted in CS. If they intend to only have specific cylinder heads, then I believe the rule must have language such as: "Only NHRA accepted aftermarket iron heads permitted."