cross breading of engines in Stock and/or Super Stock

SwillRacer · 08-25-2017, 12:53 PM

Hi All,

Long time lurker, rare poster....

I used to heads-up drag race in the NMRA heavily during the 2000's and have since had kids, got involved in life, etc......long story short, I've been out of drag racing since 2009. But we all know that the drag racing bug never just goes away.......Fast forward to a few years ago, I acquired a 1966 Mustang roller that is a former NMRA Hot Street car. I've been piecing together parts over the past 2 years and somewhere along the way I decided that I wanted to go "new school" and am building a highly modified 5.0 coyote engine to put under the hood.

I let my NHRA membership lapse years ago and so I don't have access hard copy rules or the online rules. My question: Does NHRA have any Stock or Super Stock classes that would allow for a newer model year Ford engine to be run in a older body style?

The combo should run mid 9's naturally aspirated....I guess there is always Super Gas or Super Street, (or Comp?) but I like the Stock/Super Stock format much more.

Thanks for your help!!

Scott

Todd Gross · 08-25-2017, 01:04 PM

I would think so. I have a friend that runs a 64 chevelle with a COPO style LS7 in Super Stock. I am not sure what the designation is.
You could email pat at NHRA and ask him about the combo you wish to run. pcvengros@nhra.com

BRETV · 08-25-2017, 01:53 PM

You could run it in Super Stock under the new FGT/? class. You use an older car in the stock guide, like your 66 Mustang with a new/ 2008 or newer engine, like in your case 5.0 Coyote motor that is legal in a new cobra jet. Hope that helps.

Bret Velde
2003 SS/LA

jmcarter · 08-25-2017, 02:44 PM

Easy peasy...use Dwight Sutherland's great tool...link here. Select the year/make/model of car and then select one of the weight/power values and it will then let pick "GT Class" and select the engine...you then have the potential classes to pick from.

http://www.classracerinfo.com

SwillRacer · 08-25-2017, 03:07 PM

Thanks for the help guys!!

One last question: I was looking at the Stock class rules years ago (I was always a foxbody guy) and I saw the success that Evan Smith had with his MM&FF Project Stocker. I recall that rotating assemblies had to come from an approved list as well as ported stock cyl head castings were illegal.

Would this apply in the GT classes?

My cyl heads are heavily ported, oversized valves, custom cams, aftermarket pistons and rods,etc.....

Thanks again!

BRETV · 08-25-2017, 03:44 PM

Quote:

Originally Posted by SwillRacer

Thanks for the help guys!!

One last question: I was looking at the Stock class rules years ago (I was always a foxbody guy) and I saw the success that Evan Smith had with his MM&FF Project Stocker. I recall that rotating assemblies had to come from an approved list as well as ported stock cyl head castings were illegal.

Would this apply in the GT classes?

My cyl heads are heavily ported, oversized valves, custom cams, aftermarket pistons and rods,etc.....

Thanks again!

Nope, the GT classes are Superstock classes, so porting, polishing, any cam and valvetrain, etc. Still gonna need the rule book for the specifics. I'm a foxbody guy too!

Bret Velde
2003 SS/LA

Hacksaw · 08-25-2017, 04:42 PM

Don't think there is any chance your combo will fit into a GT class. You need to meet stock port volumes, stock type configuration pistons and standard valve sizes just to begin with. Maybe a SS modified class, SS/AM or SS/AS ?

Jim Caughlin · 08-25-2017, 05:09 PM

The other issue would be the chassis, I am thinking that you had to do some pretty extensive mods to make a Coyote engine fit in a '66 Mustang chassis. The towers and suspension components have to be dimensionally stock. That would be a no go also.

BRETV · 08-25-2017, 10:49 PM

Quote:

Originally Posted by Jim Caughlin

The other issue would be the chassis, I am thinking that you had to do some pretty extensive mods to make a Coyote engine fit in a '66 Mustang chassis. The towers and suspension components have to be dimensionally stock. That would be a no go also.

Good thinking Jim, There's no way that coyote fit in the engine bay without getting rid of the shock towers and suspension and that is a big no no!!

Bret Velde
2003 SS/LA

SwillRacer · 08-28-2017, 10:06 AM

You are correct. There are no shock towers. The front end is a compete Rod & Custom Motorsports kit..

So it looks like any of the stock classes will be a no-go for me? I suspected as much, but thought I'd ask the experts.

Looks like it will be Super Gas or Super Street then....

Thanks for everyone's help!!

08-25-2017, 12:53 PM	#1
SwillRacer Junior Member Join Date: Apr 2009 Posts: 42 Likes: 0 Liked 5 Times in 1 Post	cross breading of engines in Stock and/or Super Stock Hi All, Long time lurker, rare poster.... I used to heads-up drag race in the NMRA heavily during the 2000's and have since had kids, got involved in life, etc......long story short, I've been out of drag racing since 2009. But we all know that the drag racing bug never just goes away.......Fast forward to a few years ago, I acquired a 1966 Mustang roller that is a former NMRA Hot Street car. I've been piecing together parts over the past 2 years and somewhere along the way I decided that I wanted to go "new school" and am building a highly modified 5.0 coyote engine to put under the hood. I let my NHRA membership lapse years ago and so I don't have access hard copy rules or the online rules. My question: Does NHRA have any Stock or Super Stock classes that would allow for a newer model year Ford engine to be run in a older body style? The combo should run mid 9's naturally aspirated....I guess there is always Super Gas or Super Street, (or Comp?) but I like the Stock/Super Stock format much more. Thanks for your help!! Scott Last edited by SwillRacer; 08-25-2017 at 01:13 PM.

08-25-2017, 01:04 PM	#2
Todd Gross Member Join Date: Mar 2016 Location: Crete, IL Posts: 167 Likes: 260 Liked 54 Times in 24 Posts	Re: cross breading of engines in Stock and/or Super Stock I would think so. I have a friend that runs a 64 chevelle with a COPO style LS7 in Super Stock. I am not sure what the designation is. You could email pat at NHRA and ask him about the combo you wish to run. pcvengros@nhra.com __________________ Todd Gross 3323 FS/E,F

08-25-2017, 01:53 PM	#3
BRETV Senior Member Join Date: Oct 2003 Posts: 555 Likes: 4,064 Liked 761 Times in 193 Posts	Re: cross breading of engines in Stock and/or Super Stock You could run it in Super Stock under the new FGT/? class. You use an older car in the stock guide, like your 66 Mustang with a new/ 2008 or newer engine, like in your case 5.0 Coyote motor that is legal in a new cobra jet. Hope that helps. Bret Velde 2003 SS/LA

08-25-2017, 02:44 PM	#4
jmcarter VIP Member Join Date: Dec 2008 Location: Richmond Hill GA (and Port Ludlow WA) Posts: 4,284 Likes: 2,337 Liked 3,126 Times in 962 Posts	Re: cross breading of engines in Stock and/or Super Stock Easy peasy...use Dwight Sutherland's great tool...link here. Select the year/make/model of car and then select one of the weight/power values and it will then let pick "GT Class" and select the engine...you then have the potential classes to pick from. http://www.classracerinfo.com __________________ Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table

08-25-2017, 03:07 PM	#5
SwillRacer Junior Member Join Date: Apr 2009 Posts: 42 Likes: 0 Liked 5 Times in 1 Post	Re: cross breading of engines in Stock and/or Super Stock Thanks for the help guys!! One last question: I was looking at the Stock class rules years ago (I was always a foxbody guy) and I saw the success that Evan Smith had with his MM&FF Project Stocker. I recall that rotating assemblies had to come from an approved list as well as ported stock cyl head castings were illegal. Would this apply in the GT classes? My cyl heads are heavily ported, oversized valves, custom cams, aftermarket pistons and rods,etc..... Thanks again!

08-25-2017, 04:42 PM	#7
Hacksaw Senior Member Join Date: Sep 2016 Posts: 880 Likes: 201 Liked 306 Times in 172 Posts	Re: cross breading of engines in Stock and/or Super Stock Don't think there is any chance your combo will fit into a GT class. You need to meet stock port volumes, stock type configuration pistons and standard valve sizes just to begin with. Maybe a SS modified class, SS/AM or SS/AS ?

08-25-2017, 05:09 PM	#8
Jim Caughlin Senior Member Join Date: Mar 2002 Location: Woodburn, Or Posts: 680 Likes: 77 Liked 791 Times in 241 Posts	Re: cross breading of engines in Stock and/or Super Stock The other issue would be the chassis, I am thinking that you had to do some pretty extensive mods to make a Coyote engine fit in a '66 Mustang chassis. The towers and suspension components have to be dimensionally stock. That would be a no go also.

08-28-2017, 10:06 AM	#10
SwillRacer Junior Member Join Date: Apr 2009 Posts: 42 Likes: 0 Liked 5 Times in 1 Post	Re: cross breading of engines in Stock and/or Super Stock You are correct. There are no shock towers. The front end is a compete Rod & Custom Motorsports kit.. So it looks like any of the stock classes will be a no-go for me? I suspected as much, but thought I'd ask the experts. Looks like it will be Super Gas or Super Street then.... Thanks for everyone's help!!