Stock Auto Trans Rule Change History ?

oldskool · 11-01-2021, 11:29 AM

"...if that Pontiac combination could run 11.00 or under it would be pretty good..."

Since Adam Strang ran 10.80's, with a stick, I assume that same engine would run somewhere around that 11 sec number, with the correct auto trans set-up.

The E/SA index is 11.70.

http://www.classracerinfo.com/NHRA_Classes.aspx

So, an 11.00 car would be competitive, at most races. Wouldn't make the 128 field @ Indy. And wouldn't win the heads-up runs against the really quick E/SA cars. But, it would win some heads-up runs, & would have a chance to win any race in which it didn't have a heads-up round.

.700 under would have been just below the middle of the field @ the recent div 2 race.

https://www.dragracecentral.com/DRCS...r=100#indextop

If my calculations are correct, the 350 '68 Bird is a natural F-class car. Can add some weight & run G/SA. 11 x 305 = 3355lb

The G/SA index is 12-flat. So, anything quicker than 11.50 would be fairly competitive. Low 11's would win some heads-up rounds.

Could remove some weight & run E/SA. 10 x 305 = 3050lb. So, that would be about 300lbs difference.

I think you must add 170lbs for driver, to arrive at the min total weight for the class you'll run. So min weight for E/SA would be 3050 + 170 = 3220lbs. For G/SA, it would be 3355 + 170 = 3525lbs.

11-01-2021, 11:29 AM	#28
oldskool VIP Member Join Date: Dec 2014 Location: The Land of Bayous, Boudin & Crawfish Posts: 1,668 Likes: 223 Liked 747 Times in 362 Posts	Re: Stock Auto Trans Rule Change History ? "...if that Pontiac combination could run 11.00 or under it would be pretty good..." Since Adam Strang ran 10.80's, with a stick, I assume that same engine would run somewhere around that 11 sec number, with the correct auto trans set-up. The E/SA index is 11.70. http://www.classracerinfo.com/NHRA_Classes.aspx So, an 11.00 car would be competitive, at most races. Wouldn't make the 128 field @ Indy. And wouldn't win the heads-up runs against the really quick E/SA cars. But, it would win some heads-up runs, & would have a chance to win any race in which it didn't have a heads-up round. .700 under would have been just below the middle of the field @ the recent div 2 race. https://www.dragracecentral.com/DRCS...r=100#indextop If my calculations are correct, the 350 '68 Bird is a natural F-class car. Can add some weight & run G/SA. 11 x 305 = 3355lb The G/SA index is 12-flat. So, anything quicker than 11.50 would be fairly competitive. Low 11's would win some heads-up rounds. Could remove some weight & run E/SA. 10 x 305 = 3050lb. So, that would be about 300lbs difference. I think you must add 170lbs for driver, to arrive at the min total weight for the class you'll run. So min weight for E/SA would be 3050 + 170 = 3220lbs. For G/SA, it would be 3355 + 170 = 3525lbs. Last edited by oldskool; 11-01-2021 at 12:23 PM.