Stock Rules - NHRA vs IHRA

Dave Turner · 09-14-2008, 11:13 AM

Could someone please post the specific rule differences between the two sanctions? I have no NHRA rule book handy at the moment......thanks a lot.

greg fulk · 09-14-2008, 12:10 PM

what you want to know Dave?

Dave Turner · 09-14-2008, 12:20 PM

What do I need to change on my IHRA car to pass tech at an NHRA event? The rules are different; I don't have an NHRA book for comparison.

greg fulk · 09-14-2008, 12:38 PM

Dave I can't think of a thing...Hp maybe rated differant. Also they check fuel @ every race, so you need a fuel check valve. Shoot me a private message if you have question about one thing.

Dave Turner · 09-14-2008, 12:55 PM

I was looking for areas of differentiation like battery location, fuel tank/cell, radiator type, categories that my unreliable memory of the NHRA book tells me are potentially different. I think the HP factor is the same for my combination.

Joe Martens · 09-14-2008, 12:59 PM

Radiator or driveshaft rule may be different. I believe IHRA permits aluminum radiators and maybe driveshafts, whereas NHRA does not. What about the 2 step switch? Two step must be pedal activated in NHRA.

Dave Turner · 09-14-2008, 01:28 PM

The two-step rule is the same and I have stock type rad and driveshaft....thanks Joe.

greg fulk · 09-14-2008, 01:42 PM

Dave all the stuff like that are the same. Engine wise the only thing I can think of is pistons...IHRA says stock appering top...& NHRA ...well ...not that simple

Good luck!

Dave Turner · 09-14-2008, 01:54 PM

Greg & Joe, thanks for replying; I'm still hoping that someone will have a rule book from each organization and post the differences....more concerned with details unrelated to the engine. I can chase down an NHRA book next week but it's a lazy Sunday afternoon and the "Cup" race hasn't started yet!!

Patrick Kelliher · 09-14-2008, 02:48 PM

Other rules include; roller rockers are not allowed in NHRA unless OEM, Battery must be mounted in the front in NHRA (although a second battery is allowed in the trunk). The 2-step must function on the brake/clutch pedal.

09-14-2008, 11:13 AM	#1
Dave Turner VIP Member Join Date: Oct 2005 Location: Schomberg, ON, Canada Posts: 1,222 Likes: 1,606 Liked 364 Times in 138 Posts	Stock Rules - NHRA vs IHRA Could someone please post the specific rule differences between the two sanctions? I have no NHRA rule book handy at the moment......thanks a lot. __________________ Dave Turner SS/GT #1153

09-14-2008, 12:10 PM	#2
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: Stock Rules - NHRA vs IHRA what you want to know Dave? __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

09-14-2008, 12:20 PM	#3
Dave Turner VIP Member Join Date: Oct 2005 Location: Schomberg, ON, Canada Posts: 1,222 Likes: 1,606 Liked 364 Times in 138 Posts	Re: Stock Rules - NHRA vs IHRA What do I need to change on my IHRA car to pass tech at an NHRA event? The rules are different; I don't have an NHRA book for comparison. __________________ Dave Turner SS/GT #1153

09-14-2008, 12:38 PM	#4
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: Stock Rules - NHRA vs IHRA Dave I can't think of a thing...Hp maybe rated differant. Also they check fuel @ every race, so you need a fuel check valve. Shoot me a private message if you have question about one thing. __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

09-14-2008, 12:55 PM	#5
Dave Turner VIP Member Join Date: Oct 2005 Location: Schomberg, ON, Canada Posts: 1,222 Likes: 1,606 Liked 364 Times in 138 Posts	Re: Stock Rules - NHRA vs IHRA I was looking for areas of differentiation like battery location, fuel tank/cell, radiator type, categories that my unreliable memory of the NHRA book tells me are potentially different. I think the HP factor is the same for my combination. __________________ Dave Turner SS/GT #1153

09-14-2008, 12:59 PM	#6
Joe Martens Senior Member Join Date: Dec 2001 Location: North Olmsted, Ohio Posts: 787 Likes: 622 Liked 196 Times in 69 Posts	Re: Stock Rules - NHRA vs IHRA Radiator or driveshaft rule may be different. I believe IHRA permits aluminum radiators and maybe driveshafts, whereas NHRA does not. What about the 2 step switch? Two step must be pedal activated in NHRA. __________________ Joe Martens AA/Stock 3969

09-14-2008, 01:28 PM	#7
Dave Turner VIP Member Join Date: Oct 2005 Location: Schomberg, ON, Canada Posts: 1,222 Likes: 1,606 Liked 364 Times in 138 Posts	Re: Stock Rules - NHRA vs IHRA The two-step rule is the same and I have stock type rad and driveshaft....thanks Joe. __________________ Dave Turner SS/GT #1153

09-14-2008, 01:42 PM	#8
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: Stock Rules - NHRA vs IHRA Dave all the stuff like that are the same. Engine wise the only thing I can think of is pistons...IHRA says stock appering top...& NHRA ...well ...not that simple Good luck! __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

09-14-2008, 01:54 PM	#9
Dave Turner VIP Member Join Date: Oct 2005 Location: Schomberg, ON, Canada Posts: 1,222 Likes: 1,606 Liked 364 Times in 138 Posts	Re: Stock Rules - NHRA vs IHRA Greg & Joe, thanks for replying; I'm still hoping that someone will have a rule book from each organization and post the differences....more concerned with details unrelated to the engine. I can chase down an NHRA book next week but it's a lazy Sunday afternoon and the "Cup" race hasn't started yet!! __________________ Dave Turner SS/GT #1153

09-14-2008, 02:48 PM	#10
Patrick Kelliher Member Join Date: May 2006 Location: New Hampshire Posts: 124 Likes: 0 Liked 0 Times in 0 Posts	Re: Stock Rules - NHRA vs IHRA Other rules include; roller rockers are not allowed in NHRA unless OEM, Battery must be mounted in the front in NHRA (although a second battery is allowed in the trunk). The 2-step must function on the brake/clutch pedal.