Weight question?

Rat Raceway · 06-29-2017, 07:05 PM

If a car moves up a class to a lighter class, is there a max weight it must meet?

Random example.

The 1969 Nova. 3337 shipping weight with Manual Trans and iron heads is 385hp. Weight Break 8.66 B/S.

Is there a minimum weight it would have to meet to run A/S 8.00? Or can it weigh whatever and jump up to that class?

Going down a class I understand adding to meet the minimum of that weight break.Does it go both ways?

Thanks!!!

Mark Yacavone · 06-29-2017, 07:11 PM

You can't be over B weight, and run A, if that's what you're asking.

Rat Raceway · 06-29-2017, 07:23 PM

(EDIT)So 3506 or less is good?

Hacksaw · 06-29-2017, 08:56 PM

Yes, there is a max weight for class racing. If your weight is more than your class than you must move to the next lower class or get bounced. Approx. 15 years ago NHRA stopping anyone from utilizing excessive amounts of ballast. The reasoning is: get a more realistic hp factor for that combo. Comp, is different, the exact rule is lost some where in between my ears, can only be within so many inches as claimed ....... I think

FED 387 · 06-29-2017, 09:10 PM

Comp is pounds per cubic inch plus whatever rule book says concerning heads/ carbs/transmission etc

Mark Yacavone · 06-29-2017, 10:27 PM

Quote:

Originally Posted by Rat Raceway

So 3539 or less is good?

No. I don't know where you got that number. Please explain.

Rat Raceway · 06-30-2017, 01:26 AM

Quote:

Originally Posted by Mark Yacavone

No. I don't know where you got that number. Please explain.

Sorry Mark I fat fingered my number...

3337 plus 170 for the driver is 3507 Minimum weight
So one pound off the B/S minimum 3506 and you are good to race up a class?

Albert Lee · 06-30-2017, 08:00 AM

A min: 8×385=3080+170=3250

B min: 8.5×385=3272 +170=3440

All weights are rounded down to the next 5 pound increment. The A max would be less than 3440.

Al Corda

Larry Hill · 06-30-2017, 08:16 AM

^^^^^^^^^^^^^^^^

Hacksaw · 06-30-2017, 08:25 AM

Quote:

Originally Posted by FED 387

Comp is pounds per cubic inch plus whatever rule book says concerning heads/ carbs/transmission etc

You may not claim any more than 5 cubic inches of your actual engine size in Comp.

06-29-2017, 07:05 PM	#1
Rat Raceway Member Join Date: Nov 2012 Location: Denver Co Posts: 408 Likes: 282 Liked 35 Times in 17 Posts	Weight question? If a car moves up a class to a lighter class, is there a max weight it must meet? Random example. The 1969 Nova. 3337 shipping weight with Manual Trans and iron heads is 385hp. Weight Break 8.66 B/S. Is there a minimum weight it would have to meet to run A/S 8.00? Or can it weigh whatever and jump up to that class? Going down a class I understand adding to meet the minimum of that weight break.Does it go both ways? Thanks!!! __________________ Ross Gregory 5133 Stock,Super Stock 53 Top Dragster

06-29-2017, 07:11 PM	#2
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,810 Likes: 2,901 Liked 5,116 Times in 1,949 Posts	Re: Weight question? You can't be over B weight, and run A, if that's what you're asking. __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

06-29-2017, 07:23 PM	#3
Rat Raceway Member Join Date: Nov 2012 Location: Denver Co Posts: 408 Likes: 282 Liked 35 Times in 17 Posts	Re: Weight question? (EDIT)So 3506 or less is good? __________________ Ross Gregory 5133 Stock,Super Stock 53 Top Dragster Last edited by Rat Raceway; 06-30-2017 at 01:27 AM.

06-29-2017, 08:56 PM	#4
Hacksaw Senior Member Join Date: Sep 2016 Posts: 881 Likes: 206 Liked 309 Times in 173 Posts	Re: Weight question? Yes, there is a max weight for class racing. If your weight is more than your class than you must move to the next lower class or get bounced. Approx. 15 years ago NHRA stopping anyone from utilizing excessive amounts of ballast. The reasoning is: get a more realistic hp factor for that combo. Comp, is different, the exact rule is lost some where in between my ears, can only be within so many inches as claimed ....... I think

06-29-2017, 09:10 PM	#5
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,417 Likes: 522 Liked 331 Times in 179 Posts	Re: Weight question? Comp is pounds per cubic inch plus whatever rule book says concerning heads/ carbs/transmission etc

06-30-2017, 08:00 AM	#8
Albert Lee Member Join Date: Apr 2010 Posts: 253 Likes: 145 Liked 258 Times in 49 Posts	Re: Weight question? A min: 8×385=3080+170=3250 B min: 8.5×385=3272 +170=3440 All weights are rounded down to the next 5 pound increment. The A max would be less than 3440. Al Corda

06-30-2017, 08:16 AM	#9
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,631 Likes: 1,925 Liked 10,683 Times in 2,223 Posts	Re: Weight question? ^^^^^^^^^^^^^^^^ __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817 Last edited by Larry Hill; 06-30-2017 at 08:19 AM.