Within Stock rules???

BBF67 · 03-26-2016, 05:15 PM

Quote:

Originally Posted by MR DERBY CITY

Remember, NHRA is the organization that allows FORDs to use CHEVROLET rods in their stock Elminator engines...

Thats what happens when someone who does not know beans about class racing gets a job that includes accepting products for Stock.

Alan Nyhus · 03-26-2016, 05:37 PM

Heckuva Super Stock motor......

Ed Carpenter · 03-26-2016, 05:54 PM

I was joking some people pm me need to lighten up!

SSDiv6 · 03-26-2016, 06:29 PM

The cylinder heads are CNC ported as shipped by GM and they are part number 17802818.
They feature:
• 12 Degree Valve Angle
• 2.205" titanium intake valves
• 1.615" sodium-filled exhaust valves
• Max-Life Beehive-type valve springs
• Valve retainers and locks
• Intake and exhaust stem seals
• Intake lash cap
• 275cc Intake Port
• 90cc Exhaust

There is also another version of the 427 COPO engine used for Factory Stock that runs the LSX-DR cylinder head engine with larger valves and a 313 cc intake port and 110cc exhaust port. This cylinder heads run a CFE designed intake manifold with a Holey Dominator sized throttle body.

http://www.chevyhardcore.com/news/ne...take-approved/

There is another similar article on an LS3, 396 CID LS engine built by Patterson.

http://www.enginelabs.com/engine-tec...-stock-racing/

Larry Hill · 03-26-2016, 06:57 PM

More interesting reading on the ERL block that SAM uses.

http://www.enginelabs.com/engine-tec...-ls-lt-blocks/

Tony Corley · 03-26-2016, 07:16 PM

The Sam's guys are smart and know the rules. I would be willing to bet that they would pass teardown anywhere.

Peter Ash · 03-26-2016, 07:36 PM

Quote:

Originally Posted by Tony Corley

The Sam's guys are smart and know the rules. I would be willing to bet that they would pass teardown anywhere.

Stock Cars Section 10A, page 3

CYLINDER HEADS

Porting, polishing, welding, epoxying and acid-porting prohibited.
Combustion-chamber modifications prohibited

External modifications prohibited.

and from the article "http://www.enginelabs.com/engine-tec...liminator-ls7/"

“The maximum intake port volume we’re allowed is 275cc, so we milled down the intake flange surface to shorten up the length of the port just slightly. This gives us some extra room to touch up the short-turn radius, bowl, and valve job area and increase the cross-section a bit without exceeding the cc limit,” Judson reveals.

hmmm?

03-26-2016, 05:37 PM	#2
Alan Nyhus VIP Member Join Date: Dec 2002 Location: Lower Dakota territory Posts: 1,180 Likes: 1,074 Liked 799 Times in 236 Posts	Re: Within Stock rules??? Heckuva Super Stock motor...... __________________ "That'll never work....."

03-26-2016, 05:54 PM	#3
Ed Carpenter Live Reporter Join Date: May 2006 Location: Dripping Springs, Tx Posts: 2,709 Likes: 186 Liked 520 Times in 132 Posts	Re: Within Stock rules??? I was joking some people pm me need to lighten up! __________________ Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development Last edited by Ed Carpenter; 03-26-2016 at 11:48 PM.

03-26-2016, 06:29 PM	#4
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,045 Likes: 712 Liked 1,605 Times in 583 Posts	Re: Within Stock rules??? The cylinder heads are CNC ported as shipped by GM and they are part number 17802818. They feature: • 12 Degree Valve Angle • 2.205" titanium intake valves • 1.615" sodium-filled exhaust valves • Max-Life Beehive-type valve springs • Valve retainers and locks • Intake and exhaust stem seals • Intake lash cap • 275cc Intake Port • 90cc Exhaust There is also another version of the 427 COPO engine used for Factory Stock that runs the LSX-DR cylinder head engine with larger valves and a 313 cc intake port and 110cc exhaust port. This cylinder heads run a CFE designed intake manifold with a Holey Dominator sized throttle body. http://www.chevyhardcore.com/news/ne...take-approved/ There is another similar article on an LS3, 396 CID LS engine built by Patterson. http://www.enginelabs.com/engine-tec...-stock-racing/

03-26-2016, 06:57 PM	#5
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,667 Likes: 1,959 Liked 10,837 Times in 2,252 Posts	Re: Within Stock rules??? More interesting reading on the ERL block that SAM uses. http://www.enginelabs.com/engine-tec...-ls-lt-blocks/ __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

03-26-2016, 07:16 PM	#6
Tony Corley Member Join Date: Nov 2011 Posts: 264 Likes: 42 Liked 61 Times in 25 Posts	Re: Within Stock rules??? The Sam's guys are smart and know the rules. I would be willing to bet that they would pass teardown anywhere.