Modified questions

RPM5595 · 08-04-2007, 11:51 PM

--------------------------------------------------------------------------------

Hi, I am considering building a SS/Modified Stock class combination for 2008. I am looking at SS/BS and I have a couple questions I'm sure someone can answer for me. I used to run Stock Eliminator so I am familiar with Class Racing but not so much with the Modifieds. When the NHRA rule book refers to "OEM" style cylinder heads, "no billet", are they considering manufacturers such as Dart, Edelbrock, etc. as "OEM's" or does it mean Ford, GM, Chrysler? I will be building a Ford so what is accepted? It also says that only NHRA accepted heads are legal but I cannot find a approved list anywhere? Also, can you run a aftermarket cylinder block? Any insight into this class is appreciated. Thanks in advance.

Jay Roeder

FED 387 · 08-05-2007, 12:32 AM

Your best bet is to get together all of the part numbers and a description of any parts you are thinking of using and send a letter off to NHRA Tech Dept. in Calif. and ask them if a specific head/block whatever is OK to use for that class BEFORE you purchase any parts. I would also enclose a self addressed stamped envelope so that you can get a written answer by return mail.---You also can contact your division tech guy and see if he can give you an answer too but overall Calif. has the final say on what is OK---Comp 387

RPM5595 · 08-05-2007, 11:42 AM

THANK YOU for responding. So far you are the only one! I had figured on getting ahold of someone at NHRA before I purchsaed parts because I know what you are saying about that. I guess I was just asking in general if you can use aftermarket heads and blocks? Thanks for your input.

FED 387 · 08-05-2007, 05:01 PM

To answer your question YES you can use aftermarket parts-----Which parts will be accepted I do not know!!!!!! You will have to get an OK from NHRA Tech Dept as to which or what head/ block whatever for a FORD in Super Stock will be acceptable---- Basically it must be OEM Factory stuff but they do give you a little leeway as long as their is no performance advantage over the factory astuff--- By that I mean it can be a more durable piece more heavy duty like 4 bolt main block vs. 2 bolt , but no performance advantage. Like more HORSEPOWER !!!!!!! Comp 387

RPM5595 · 08-05-2007, 11:54 PM

Ah, I see. Another gentleman on the S/SS board says I can not run aftermarket heads, Ford OEM only, so now I'm really confused. He mentions the GM guys can use certain Bowtie parts though so I wonder if any Ford Racing parts would be acceptable? I'm just going to have to bite the bullet and contact NHRA I imagine. Thanks for your help.

JCQuinn · 08-06-2007, 02:33 PM

I asked NHRA the same question a couple of years age. I can't remember the exact answer but they did consider FRP heads to be OEM and legal.

But do ask NHRA because rule interpretations seem to change over time.

Jeff Colvert · 01-25-2010, 05:46 PM

Quote:

Originally Posted by RPM5595

--------------------------------------------------------------------------------

Hi, I am considering building a SS/Modified Stock class combination for 2008. I am looking at SS/BS and I have a couple questions I'm sure someone can answer for me. I used to run Stock Eliminator so I am familiar with Class Racing but not so much with the Modifieds. When the NHRA rule book refers to "OEM" style cylinder heads, "no billet", are they considering manufacturers such as Dart, Edelbrock, etc. as "OEM's" or does it mean Ford, GM, Chrysler? I will be building a Ford so what is accepted? It also says that only NHRA accepted heads are legal but I cannot find a approved list anywhere? Also, can you run a aftermarket cylinder block? Any insight into this class is appreciated. Thanks in advance.

Jay Roeder

Jay, Sorry that I didn't run across your thread sooner. You can call Jim Kuntz @ Kuntz and Company on what head to use on a Ford combination.He has raced in the A/SM & SS/BS class over the years and builds some of the meanest NA small block Fords in the country. I know he has CNC programs on most all the Ford heads. 870-246-2595

Jeff Colvert SS/G 4456
09 National Record Holder
9.48 @ 140.53

08-04-2007, 11:51 PM	#1
RPM5595 Member Join Date: Mar 2002 Location: Nashua,Iowa Posts: 136 Likes: 84 Liked 32 Times in 14 Posts	Modified questions -------------------------------------------------------------------------------- Hi, I am considering building a SS/Modified Stock class combination for 2008. I am looking at SS/BS and I have a couple questions I'm sure someone can answer for me. I used to run Stock Eliminator so I am familiar with Class Racing but not so much with the Modifieds. When the NHRA rule book refers to "OEM" style cylinder heads, "no billet", are they considering manufacturers such as Dart, Edelbrock, etc. as "OEM's" or does it mean Ford, GM, Chrysler? I will be building a Ford so what is accepted? It also says that only NHRA accepted heads are legal but I cannot find a approved list anywhere? Also, can you run a aftermarket cylinder block? Any insight into this class is appreciated. Thanks in advance. Jay Roeder

08-05-2007, 12:32 AM	#2
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 329 Liked 280 Times in 150 Posts	Re: Modified questions Your best bet is to get together all of the part numbers and a description of any parts you are thinking of using and send a letter off to NHRA Tech Dept. in Calif. and ask them if a specific head/block whatever is OK to use for that class BEFORE you purchase any parts. I would also enclose a self addressed stamped envelope so that you can get a written answer by return mail.---You also can contact your division tech guy and see if he can give you an answer too but overall Calif. has the final say on what is OK---Comp 387

08-05-2007, 11:42 AM	#3
RPM5595 Member Join Date: Mar 2002 Location: Nashua,Iowa Posts: 136 Likes: 84 Liked 32 Times in 14 Posts	Re: Modified questions THANK YOU for responding. So far you are the only one! I had figured on getting ahold of someone at NHRA before I purchsaed parts because I know what you are saying about that. I guess I was just asking in general if you can use aftermarket heads and blocks? Thanks for your input.

08-05-2007, 05:01 PM	#4
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 329 Liked 280 Times in 150 Posts	Re: Modified questions To answer your question YES you can use aftermarket parts-----Which parts will be accepted I do not know!!!!!! You will have to get an OK from NHRA Tech Dept as to which or what head/ block whatever for a FORD in Super Stock will be acceptable---- Basically it must be OEM Factory stuff but they do give you a little leeway as long as their is no performance advantage over the factory astuff--- By that I mean it can be a more durable piece more heavy duty like 4 bolt main block vs. 2 bolt , but no performance advantage. Like more HORSEPOWER !!!!!!! Comp 387

08-05-2007, 11:54 PM	#5
RPM5595 Member Join Date: Mar 2002 Location: Nashua,Iowa Posts: 136 Likes: 84 Liked 32 Times in 14 Posts	Re: Modified questions Ah, I see. Another gentleman on the S/SS board says I can not run aftermarket heads, Ford OEM only, so now I'm really confused. He mentions the GM guys can use certain Bowtie parts though so I wonder if any Ford Racing parts would be acceptable? I'm just going to have to bite the bullet and contact NHRA I imagine. Thanks for your help. Last edited by RPM5595; 08-05-2007 at 11:55 PM. Reason: spelling

08-06-2007, 02:33 PM	#6
JCQuinn Junior Member Join Date: Jul 2002 Location: Lakewood, CO Posts: 14 Likes: 0 Liked 2 Times in 1 Post	Re: Modified questions I asked NHRA the same question a couple of years age. I can't remember the exact answer but they did consider FRP heads to be OEM and legal. But do ask NHRA because rule interpretations seem to change over time.