SS/AM Questions? - Page 2

SSDiv6 · 02-06-2014, 12:29 AM

Quote:

Originally Posted by Karl Owens

My question is if the Edelbrock heads which are on the list as approved castings for certain combinations in stock or super stock can be used in SS Modified. They are not OE but they are approved for Super Stock. For example the 1968 428 Pontiac combination that is allowed to use Edelbrock heads. If I took this combination added a dual four barrel intake and carbs and ran @ 7 #/CID would this combination be legal?

Using your case of the Pontiac engine with the approved Edelbrock cylinder head, you would be in a great disadvantage in SS/AM since Canted and Splayed valve cylinder heads are allowed.
Also understand that the SS Modified classes use Comp Eliminator engines with non-billet cylinder heads.

Karl Owens · 02-06-2014, 03:38 AM

I know canted/splayed valve heads are allowed but it doesn't mean they're better

Dwight Southerland · 02-06-2014, 07:36 AM

Quote:

Originally Posted by Karl Owens

I know canted/splayed valve heads are allowed but it doesn't mean they're better

Karl Owens · 02-06-2014, 09:25 AM

One of the fastest AM cars has/had wedge heads

Adger Smith · 02-07-2014, 12:03 AM

Karl,
I read the rules a couple of times and saw what I thought was the answer to your question. Since all classes are presented in the rulebook in an orderly "Building" sequence. The later builds on the first. I was just about to say the Stock and SS aftermarket heads would be allowed because they were allowed in classes before the SS/AM category. That is the way it usually happens, but in this case they are not allowed because one line in the SS/Modified rules projects what heads can be used. The wording says "must be OE head with OE casting number". The answer is NO. I know this is not the answer you were looking for.
To make sure I contacted one of my super secret NHRA Tech mentors and I got this answer to the query. NO. So don't show up with an Edelbrock Head in SS/Modified. Guess that closes the door on anything but a factory part number head.

FireSale · 02-07-2014, 02:18 AM

I just finished splitting the 2014 rule book into sections and found that Super Stock, Super Stock GT and GT Truck all follow the cylinder head guidelines for SS. Beginning with the Modified groupings, these change, as do a lot of the other overall regs for the cars like full cages required in all machines. Specifically no aluminum heads.

Read Cylinder Heads under SS and compare it to Cylinder Heads under Modified Stock.

Dale

Adger Smith · 02-07-2014, 02:48 AM

Dale,
That is what I mean about the rules building on one another, until there is a change in the next class. If you notice when you go from SS to SS GT the wording at the beginning of the GT it will say that GT forllows the SS rules with the exception of the following and go into the GT changed rules. So when it goes into modified it changes the head rules, like you said. Like my NHRA source said when I followed up with a phone call. Read the rules. They say nothing but a Factory part number head. Just my own thought, but If he wants a Ford with an alum head I think there are several available, but not FE's. My buddy RJ told me one time he had some iron FE's that were better than the Edelbrock Fe's, but that was in Stock. Hey, follow the rules. Do some iron heads on the FE and come out and play.

Karl Owens · 02-07-2014, 08:20 AM

It makes no sense you cant run an aluminum copy of a factory head but you can use a canted valve SBC head which resembles nothing close to a production head.

What about IHRA?

Super Stock production classes?

cutta · 02-07-2014, 08:21 AM

Quote:

Originally Posted by Karl Owens

I know canted/splayed valve heads are allowed but it doesn't mean they're better

The Mopar heads are, those P5 motors are quite nasty.

Adger Smith · 02-07-2014, 09:57 AM

Quote from Karl: It makes no sense you cant run an aluminum copy of a factory head but you can use a canted valve SBC head which resembles nothing close to a production head.

What about IHRA?

Super Stock production classes?

It is all about the factory part number. If Ford had assigned a factory part number to them they would be legal. That is what makes sense...
You need to have a conversation with Mike Baker @ IHRA about the FE Ebelbrock head. He's the IHRA man!!

02-06-2014, 03:38 AM	#12
Karl Owens Junior Member Join Date: Dec 2009 Posts: 69 Likes: 0 Liked 1 Time in 1 Post	Re: SS/AM Questions? I know canted/splayed valve heads are allowed but it doesn't mean they're better

02-06-2014, 09:25 AM	#14
Karl Owens Junior Member Join Date: Dec 2009 Posts: 69 Likes: 0 Liked 1 Time in 1 Post	Re: SS/AM Questions? One of the fastest AM cars has/had wedge heads

02-07-2014, 12:03 AM	#15
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: SS/AM Questions? Karl, I read the rules a couple of times and saw what I thought was the answer to your question. Since all classes are presented in the rulebook in an orderly "Building" sequence. The later builds on the first. I was just about to say the Stock and SS aftermarket heads would be allowed because they were allowed in classes before the SS/AM category. That is the way it usually happens, but in this case they are not allowed because one line in the SS/Modified rules projects what heads can be used. The wording says "must be OE head with OE casting number". The answer is NO. I know this is not the answer you were looking for. To make sure I contacted one of my super secret NHRA Tech mentors and I got this answer to the query. NO. So don't show up with an Edelbrock Head in SS/Modified. Guess that closes the door on anything but a factory part number head. __________________ Adger Smith (Former SS)

02-07-2014, 02:18 AM	#16
FireSale VIP Member Join Date: Feb 2014 Location: Lakewood Washington Posts: 1,407 Likes: 29 Liked 237 Times in 126 Posts	Re: SS/AM Questions? I just finished splitting the 2014 rule book into sections and found that Super Stock, Super Stock GT and GT Truck all follow the cylinder head guidelines for SS. Beginning with the Modified groupings, these change, as do a lot of the other overall regs for the cars like full cages required in all machines. Specifically no aluminum heads. Read Cylinder Heads under SS and compare it to Cylinder Heads under Modified Stock. Dale __________________ Dale Shearon 68 Mustang 6394

02-07-2014, 02:48 AM	#17
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: SS/AM Questions? Dale, That is what I mean about the rules building on one another, until there is a change in the next class. If you notice when you go from SS to SS GT the wording at the beginning of the GT it will say that GT forllows the SS rules with the exception of the following and go into the GT changed rules. So when it goes into modified it changes the head rules, like you said. Like my NHRA source said when I followed up with a phone call. Read the rules. They say nothing but a Factory part number head. Just my own thought, but If he wants a Ford with an alum head I think there are several available, but not FE's. My buddy RJ told me one time he had some iron FE's that were better than the Edelbrock Fe's, but that was in Stock. Hey, follow the rules. Do some iron heads on the FE and come out and play. __________________ Adger Smith (Former SS)

02-07-2014, 08:20 AM	#18
Karl Owens Junior Member Join Date: Dec 2009 Posts: 69 Likes: 0 Liked 1 Time in 1 Post	Re: SS/AM Questions? It makes no sense you cant run an aluminum copy of a factory head but you can use a canted valve SBC head which resembles nothing close to a production head. What about IHRA? Super Stock production classes?

02-07-2014, 09:57 AM	#20
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: SS/AM Questions? Quote from Karl: It makes no sense you cant run an aluminum copy of a factory head but you can use a canted valve SBC head which resembles nothing close to a production head. What about IHRA? Super Stock production classes? It is all about the factory part number. If Ford had assigned a factory part number to them they would be legal. That is what makes sense... You need to have a conversation with Mike Baker @ IHRA about the FE Ebelbrock head. He's the IHRA man!! __________________ Adger Smith (Former SS) Last edited by Adger Smith; 02-07-2014 at 09:59 AM. Reason: sp