HP reduction?

Jeff Stout · 12-10-2020, 10:56 PM

My 307 olds in a Cutlass has made passes .65 or faster and because they have received an HP increase in the last 2 years that the motor can not receive a reduction. I'm in a station wagon so I'm not in the Cutlass platform. Can or should I be able to get a reduction or not? I thought same motor same body style.

Jeff Stout · 12-10-2020, 11:16 PM

The screenings will look for an overall engine family average, or class/engine average less than 0.549-seconds under. If both averages are found to be slower than 0.549-second under, a change will be initiated. Runs of 0.100-second under and slower are not included in calculating the engine average:

In addition, the engine family must NOT make two runs of 0.650 or quicker or any run 0.850 or quicker during the past two (2) review periods, for the review to continue. Once an engine family receives a horsepower increase it is not eligible for a decrease

Copied and pasted from NHRA site. In the first paragraph first sentence sameengine or CLASS.
I'm the only 307 in U.
But second paragraph says nothing about body or class.

I'm confused.

Larry Hill · 12-11-2020, 08:49 AM

If all of the standards are satisfied, the AHFS works for the addition or subtraction of HP. It has helped many racers move up or down a class.
Jeff body style is the company platform, you know LT1 ‘98 Firebirds and Camaros.

terry1 · 12-11-2020, 08:57 AM

Has there been any "slow averages" posted this year?
Terry K

Larry Hill · 12-11-2020, 09:11 AM

Terry the slow average includes runs that are to slow to use for HP adjustments, slower than .350 under

Billy Nees · 12-11-2020, 09:28 AM

Quote:

Originally Posted by Larry Hill

you know LT1 ‘98 Firebirds and Camaros.

Hey Larry, I'm sure that this is just a Freudian slip because as you know, people who live with 'glass hoods shouldn't throw stones. ;-)

Jeff Stout · 12-11-2020, 12:38 PM

Not trying be be difficult, but Im the only 307 in U/SA. Thinking it is the only engine /body in U.

Im thinking that it doesnt matter as the engine itself has been faster then .65 in a Cutlass.
I understood that it was engine and platform and must not be correct.

Are all the same style engines have the same HP rating in the different body styles?

Jeff Stout · 12-11-2020, 01:24 PM

Disregard. I figured it out. Weight breaks are different per platform. HP is the same across the board.

MR DERBY CITY · 12-11-2020, 02:11 PM

My good friend Daran Summerton ran one of these wagons a decade or so ago. As I remember it was a top qualifier AND he didn’t spend a FORTUNE on it.....

Jeff Stout · 12-11-2020, 03:25 PM

Guess it doesn't matter. Nov 17 was cut off for request. I thought it was Dec 17th.

12-10-2020, 10:56 PM	#1
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	HP reduction? My 307 olds in a Cutlass has made passes .65 or faster and because they have received an HP increase in the last 2 years that the motor can not receive a reduction. I'm in a station wagon so I'm not in the Cutlass platform. Can or should I be able to get a reduction or not? I thought same motor same body style.

12-10-2020, 11:16 PM	#2
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	Re: HP reduction? The screenings will look for an overall engine family average, or class/engine average less than 0.549-seconds under. If both averages are found to be slower than 0.549-second under, a change will be initiated. Runs of 0.100-second under and slower are not included in calculating the engine average: In addition, the engine family must NOT make two runs of 0.650 or quicker or any run 0.850 or quicker during the past two (2) review periods, for the review to continue. Once an engine family receives a horsepower increase it is not eligible for a decrease Copied and pasted from NHRA site. In the first paragraph first sentence sameengine or CLASS. I'm the only 307 in U. But second paragraph says nothing about body or class. I'm confused.

12-11-2020, 08:49 AM	#3
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,621 Likes: 1,912 Liked 10,669 Times in 2,215 Posts	Re: HP reduction? If all of the standards are satisfied, the AHFS works for the addition or subtraction of HP. It has helped many racers move up or down a class. Jeff body style is the company platform, you know LT1 ‘98 Firebirds and Camaros. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817 Last edited by Larry Hill; 12-11-2020 at 09:00 AM.

12-11-2020, 08:57 AM	#4
terry1 Member Join Date: Sep 2006 Location: Moncton, N.B. Posts: 276 Likes: 24 Liked 24 Times in 13 Posts	Re: HP reduction? Has there been any "slow averages" posted this year? Terry K

12-11-2020, 09:11 AM	#5
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,621 Likes: 1,912 Liked 10,669 Times in 2,215 Posts	Re: HP reduction? Terry the slow average includes runs that are to slow to use for HP adjustments, slower than .350 under __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817 Last edited by Larry Hill; 12-12-2020 at 05:45 PM.

12-11-2020, 12:38 PM	#7
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	Re: HP reduction? Not trying be be difficult, but Im the only 307 in U/SA. Thinking it is the only engine /body in U. Im thinking that it doesnt matter as the engine itself has been faster then .65 in a Cutlass. I understood that it was engine and platform and must not be correct. Are all the same style engines have the same HP rating in the different body styles?

12-11-2020, 01:24 PM	#8
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	Re: HP reduction? Disregard. I figured it out. Weight breaks are different per platform. HP is the same across the board.

12-11-2020, 02:11 PM	#9
MR DERBY CITY VIP Member Join Date: Feb 2014 Location: Derby City, USA Posts: 3,619 Likes: 1,074 Liked 7,805 Times in 1,502 Posts	Re: HP reduction? My good friend Daran Summerton ran one of these wagons a decade or so ago. As I remember it was a top qualifier AND he didn’t spend a FORTUNE on it.....

12-11-2020, 03:25 PM	#10
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	Re: HP reduction? Guess it doesn't matter. Nov 17 was cut off for request. I thought it was Dec 17th.