Air cleaner in Stock Class

Lew Silverman · 03-23-2010, 08:17 PM

Learning as I go, I had another question - the NHRA rulebook states that an air cleaner, if used, must be OEM automotive or retain OEM configuration. Big-block Chevy Super Sport's came from the factory with an open-element air cleaner. Does this mean I can use one of these on another GM product in Stock Class, or am I stuck with the OEM air cleaner that came on the car? And what about a K&N, which has the OEM configuration? Thanks again for your suggestions!

Jody Lang · 03-23-2010, 10:58 PM

K&N is fine.

greg fulk · 03-24-2010, 12:32 AM

Just not the K&N with the filter top.

GTX JOHN · 03-24-2010, 03:02 AM

Really. we have run filter top on dusty tracks...not legal?

tj310 · 03-24-2010, 07:49 AM

We went through tech at Indy Open in the fall with filter style top and no comments were made ...pretty easy to take off if they don't like it...we leave it off every once in a while doesn't seem to make any difference to speed. ...Thanx Trevor

Lew Silverman · 03-24-2010, 11:15 AM

Thanks for the input! I'm going to try with and without to see if there are any disadvantages to using the high-flow element. I'm hoping it will smooth out the airflow somewhat with the Q-jet.

Wade_Owens · 03-24-2010, 11:34 AM

Quote:

Originally Posted by greg fulk

Just not the K&N with the filter top.

X2, in D3, they dont like the K&N filter top....

Wade

SSDiv6 · 03-24-2010, 12:12 PM

The K&N Filter top is just hype. It does not offer any HP improvement at all. Just run a Moroso lower and top base with a racing air filter element from Wix and you will see a lot more performance.

http://www.wixfilters.com/filterlookup/racing.asp#air

The K&N Filter top will disrupt the airflow to the carburetor.

mopar jeff · 03-24-2010, 01:44 PM

Quote:

Originally Posted by SSDiv6

The K&N Filter top is just hype. It does not offer any HP improvement at all. Just run a Moroso lower and top base with a racing air filter element from Wix and you will see a lot more performance.

http://www.wixfilters.com/filterlookup/racing.asp#air

The K&N Filter top will disrupt the airflow to the carburetor.

X2 on this one. We did back to back dyno test, and actually lost horsepower with the filter top. What a marketing joke.

03-23-2010, 08:17 PM	#1
Lew Silverman VIP Member Join Date: Mar 2010 Location: Newport News, VA Posts: 1,435 Likes: 371 Liked 129 Times in 59 Posts	Air cleaner in Stock Class Learning as I go, I had another question - the NHRA rulebook states that an air cleaner, if used, must be OEM automotive or retain OEM configuration. Big-block Chevy Super Sport's came from the factory with an open-element air cleaner. Does this mean I can use one of these on another GM product in Stock Class, or am I stuck with the OEM air cleaner that came on the car? And what about a K&N, which has the OEM configuration? Thanks again for your suggestions! __________________ Lew Silverman #2070 "The Wagon Master" N/SA

03-23-2010, 10:58 PM	#2
Jody Lang Member Join Date: Mar 2002 Posts: 306 Likes: 28 Liked 89 Times in 28 Posts	Re: Air cleaner in Stock Class K&N is fine.

03-24-2010, 12:32 AM	#3
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: Air cleaner in Stock Class Just not the K&N with the filter top. __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

03-24-2010, 03:02 AM	#4
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,721 Likes: 2,772 Liked 2,440 Times in 689 Posts	Re: Air cleaner in Stock Class Really. we have run filter top on dusty tracks...not legal?

03-24-2010, 07:49 AM	#5
tj310 Member Join Date: Sep 2009 Location: Dresden On. Canada Posts: 460 Likes: 0 Liked 0 Times in 0 Posts	Re: Air cleaner in Stock Class We went through tech at Indy Open in the fall with filter style top and no comments were made ...pretty easy to take off if they don't like it...we leave it off every once in a while doesn't seem to make any difference to speed. ...Thanx Trevor

03-24-2010, 11:15 AM	#6
Lew Silverman VIP Member Join Date: Mar 2010 Location: Newport News, VA Posts: 1,435 Likes: 371 Liked 129 Times in 59 Posts	Re: Air cleaner in Stock Class Thanks for the input! I'm going to try with and without to see if there are any disadvantages to using the high-flow element. I'm hoping it will smooth out the airflow somewhat with the Q-jet. __________________ Lew Silverman #2070 "The Wagon Master" N/SA

03-24-2010, 12:12 PM	#8
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,036 Likes: 711 Liked 1,538 Times in 575 Posts	Re: Air cleaner in Stock Class The K&N Filter top is just hype. It does not offer any HP improvement at all. Just run a Moroso lower and top base with a racing air filter element from Wix and you will see a lot more performance. http://www.wixfilters.com/filterlookup/racing.asp#air The K&N Filter top will disrupt the airflow to the carburetor.