2016 Rules Directors Cut

Questions and answers about CMC and NASA rules

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Re: 2016 Rules Directors Cut

Postby blk96gt » Fri Feb 26, 2016 10:13 am

BryanL wrote:Yeah-better make sure you have a good AFR on the car both on the dyno and on the track. If you need one I can send you mine to use. Interesting that on all the dyno charts they showed there wasn't one that included an A/F ratio. Go to the dyno and test your car as it is then add the parts while the car is on the dyno to test it back to back. If it works then get ready for weight to be added.

I have an AFR gauge on my car and always have the dyno put theirs on. The plan is to do a back to back test. Why would I add weight? I'm not going to be racing with it on unless it gets approved, plus my car is already ~3260.

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Re: 2016 Rules Directors Cut

Postby Spencer » Fri Feb 26, 2016 1:35 pm

blk96gt wrote:
Spencer wrote:We have data on one car that backs up the data provided by other sources like the magazine link provided. What is your concern about AFRs going lean?

My concern is that it could possibly lead to more problems if a car gets leaner by adding this. I'm not saying will be a problem, just something to consider.

I talked to Al last night and I'm going to pick a TB/plenum up sometime in the next month or so. What brand and size are we wanting to look at? My plan is to see if I can get at least one of the other two 4.6 cars to give a try in our region.

The C&L plenum matched with 75mm throttle body seems to have the best results

http://www.americanmuscle.com/cnl-intak ... -9604.html

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Re: 2016 Rules Directors Cut

Postby TX#11CMC » Sat Feb 27, 2016 8:28 am

I would definitely love to look into this more.
Look at it this way:
Fox/SN95 can throw a large variety of parts on their motor and can make 270-290HP easily.
LT1 and LS1 cars have to restrict to get to their numbers, but are usually 270-300 stock. They also have the 5.3L option.
SN99 cars with every available mod are around 245-260HP. It makes sense to allow them additional parts to be able to make their 260HP easily, just like everyone else. Also, if we give the SN99 the ability to meet the 260HP number more easily, I don't see any reason extra weight would need to be added.

Again, just my gut feelings and definitely something to look into.
I think also more research regarding dyno area under the curve is needed.
-Michael Mosty
TX region #11
"Fox" driver and lovin it!!!
Texas Region - CMC Director

suck fumes
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Re: 2016 Rules Directors Cut

Postby suck fumes » Mon Feb 29, 2016 6:20 am

I always thought this was a no brainer back in 2012 when I started asking questions about the motor rules before I built my car but then I got jumped on by the forum mafia saying "That isn't legal!!" Funny how the mood changes haha


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Re: 2016 Rules Directors Cut

Postby Supercharged111 » Mon Mar 14, 2016 10:48 am

I'm glad to see that this appears to be gaining traction.
Rocky Mountain CMC Director
#45 Camaro Challenge Race Car

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Re: 2016 Rules Directors Cut

Postby Spencer » Tue Mar 15, 2016 6:00 am

I think the majority support making this legal.

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