Rocker Arm Ratio

PJ305 · 07-19-2012, 09:49 AM

Are we allowed a 1.6 rocker where a 1.5 is listed to make our camshaft lift legal? Thanks for your help.

Alan Roehrich · 07-19-2012, 11:27 AM

Absolutely not in Stock Eliminator.

David Lee · 07-19-2012, 02:57 PM

Get the rulebook, it has what we can and cannot do to the eingines

PJ305 · 07-19-2012, 04:41 PM

David,

I read the rule book where does it say what rocker ratio?

Alan Roehrich · 07-19-2012, 04:55 PM

Rocker ratio is in the blueprint specifications. You absolutely cannot have a rocker ratio higher than that specified in the guide for your engine.

PJ305 · 07-19-2012, 05:05 PM

Thanks Alan, I had a conversation last evening and the fellow seemed to think the rule had changed.

David Lee · 07-19-2012, 05:37 PM

Quote:

Originally Posted by Alan Roehrich

Rocker ratio is in the blueprint specifications. You absolutely cannot have a rocker ratio higher than that specified in the guide for your engine.

Thanks Alan, you beat me to it

mtkawboy · 07-19-2012, 05:47 PM

Get a cam made that meets the lift spec with the stock rockers

Wade_Owens · 07-19-2012, 07:33 PM

PJ, I heard the rocker ratio was dropped too. I called Travis and he said it was still in full effect. He was the one who checked them at the Allstars this year. Lift at valve as well as ratio will be enforced.

Wade O

Jeff Teuton · 07-20-2012, 09:11 AM

If your rocker has no number (ratio) stamped on it, don't worry about it. I was thrown out because mine were stamped 1.65 and the rules said 1.60. The cam checked ok. Without the numbers nobody knows or cares I think.

07-19-2012, 09:49 AM	#1
PJ305 Member Join Date: Jul 2007 Posts: 137 Likes: 0 Liked 5 Times in 4 Posts	Rocker Arm Ratio Are we allowed a 1.6 rocker where a 1.5 is listed to make our camshaft lift legal? Thanks for your help.

07-19-2012, 11:27 AM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,826 Times in 414 Posts	Re: Rocker Arm Ratio Absolutely not in Stock Eliminator. __________________ Alan Roehrich 212A G/S

07-19-2012, 02:57 PM	#3
David Lee VIP Member Join Date: Oct 2007 Posts: 1,168 Likes: 487 Liked 346 Times in 126 Posts	Re: Rocker Arm Ratio Get the rulebook, it has what we can and cannot do to the eingines

07-19-2012, 04:41 PM	#4
PJ305 Member Join Date: Jul 2007 Posts: 137 Likes: 0 Liked 5 Times in 4 Posts	Re: Rocker Arm Ratio David, I read the rule book where does it say what rocker ratio?

07-19-2012, 04:55 PM	#5
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,826 Times in 414 Posts	Re: Rocker Arm Ratio Rocker ratio is in the blueprint specifications. You absolutely cannot have a rocker ratio higher than that specified in the guide for your engine. __________________ Alan Roehrich 212A G/S

07-19-2012, 05:05 PM	#6
PJ305 Member Join Date: Jul 2007 Posts: 137 Likes: 0 Liked 5 Times in 4 Posts	Re: Rocker Arm Ratio Thanks Alan, I had a conversation last evening and the fellow seemed to think the rule had changed.

07-19-2012, 05:47 PM	#8
mtkawboy Member Join Date: May 2003 Location: Billings Mt Posts: 282 Likes: 186 Liked 54 Times in 18 Posts	Re: Rocker Arm Ratio Get a cam made that meets the lift spec with the stock rockers

07-19-2012, 07:33 PM	#9
Wade_Owens Senior Member Join Date: Jul 2007 Posts: 578 Likes: 0 Liked 3 Times in 1 Post	Re: Rocker Arm Ratio PJ, I heard the rocker ratio was dropped too. I called Travis and he said it was still in full effect. He was the one who checked them at the Allstars this year. Lift at valve as well as ratio will be enforced. Wade O

07-20-2012, 09:11 AM	#10
Jeff Teuton VIP Member Join Date: Jan 2002 Location: Houma, LA Posts: 2,717 Likes: 2 Liked 325 Times in 50 Posts	Re: Rocker Arm Ratio If your rocker has no number (ratio) stamped on it, don't worry about it. I was thrown out because mine were stamped 1.65 and the rules said 1.60. The cam checked ok. Without the numbers nobody knows or cares I think. __________________ Jeff Teuton 4022 STK