69 Chevelle AA/SA 10.04 at 125mphat Spring Nats

[larrylomascolo]

Austin Williams in seat,Is this a 427-425HP combo to run AA/SA??

[Stephen & Horace Johnson]

Originally Posted by larrylomascolo

Austin Williams in seat,Is this a 427-425HP combo to run AA/SA??

Yes.

[Alan Roehrich]

How did an 69 Chevelle 427/425 automatic make AA? The 69 Chevelle 427/425 automatic is a natural B car. We even asked if using aluminum heads to make the HP factor 435 would make it a natural A car with an automatic, and were told "no". The automatic has been a natural B car for as long as I can remember, back to when Harry Vineyard ran one back in the eighties and early nineties.Harry drove the car with an automatic in B/SA, and it was a killer. They put the 4 speed in and Tucker Parrish drove it in A/S, and it was just as wicked. I think Kevin Borgstrom put the 4 speed in his beautiful green Yenko clone just to run AA.

[Tom Moock]

Alan, Don`t stick & automatic fit the same class`s? stick 8.36, automatic 8.49.

[Larry Hill]

A= 8.00 lbs - 8.49 lbs per NHRA. A car can move up or down one class from natural class. So the car is a natural A car at 8.49 with the automatic. To fit AA/SA the car with driver would weigh 3355# min. to 3565# max.

[Dave Casey]

looks correct to me, by NHRA,s guide it's a natural A car , I did notice that Dwight's site lists the auto as falling at 8.50, and nhra says 8.49. not sure why they are different.

These cars have been run as A cars for ages, Denny Ford and Jim Benjamin both ran them as sticks back in the 70's and 80's , long before we could move a class up or down and I don't think the rating has changed

[M Brand 505B]

The 8.49 was recently brought to NHRA's attention hence the change. I would assume NHRA rounds down even if its 8.499 like they do on class weight ex. 3449 is 3445. The rule book doesn't seem to cover how weights and indexes are rounded though except for adding/taking away HP and that is rounded up ex 2.15 is 3.

[Adub464Q]

We can't sneak anything past you guys on here!

Yes, I was running a 69 chevelle with a 427/425 combo, with aftermarket heads rated at 435 hp. The car is owned by Will Carrell out of Oklahoma and he's done an awesome job building this combo. Regardless of the head, the factor is still done with the advertised hp (425).

The shipping weight is 3611. When doing the math,

3611/425 = 8.496....hence the dilemma. I did the math and Will brought it to NHRA's attention that it should be a natural A car, similar to what Larry mentioned above. Pat was in agreement that the excel sheet was incorrectly rounding the factor up. He adjusted the excel sheet this week prior to us entering the national event on Thursday. We did not enter the class until the sheetvwas changed online.

This was all done because AA at a minimum of 3430 is much more attractive than C at 4000+ lbs. Not to mention that it is much more safe.

If anyone would like to discuss this, PM me and l will give you my phone number.

Also for the record, the car is really cool and wheelie fun to drive.

[MR DERBY CITY]

Originally Posted by Adub464Q

We can't sneak anything past you guys on here!

Yes, I was running a 69 chevelle with a 427/425 combo, with aftermarket heads rated at 435 hp. The car is owned by Will Carrell out of Oklahoma and he's done an awesome job building this combo. Regardless of the head, the factor is still done with the advertised hp (425).

The shipping weight is 3611. When doing the math,

3611/425 = 8.496....hence the dilemma. I did the math and Will brought it to NHRA's attention that it should be a natural A car, similar to what Larry mentioned above. Pat was in agreement that the excel sheet was incorrectly rounding the factor up. He adjusted the excel sheet this week prior to us entering the national event on Thursday. We did not enter the class until the sheetvwas changed online.

This was all done because AA at a minimum of 3430 is much more attractive than C at 4000+ lbs. Not to mention that it is much more safe.

If anyone would like to discuss this, PM me and l will give you my phone number.

Also for the record, the car is really cool and wheelie fun to drive.

Nicely played, BRAVO.....

[Alan Roehrich]

Originally Posted by Adub464Q

We can't sneak anything past you guys on here!

Yes, I was running a 69 chevelle with a 427/425 combo, with aftermarket heads rated at 435 hp. The car is owned by Will Carrell out of Oklahoma and he's done an awesome job building this combo. Regardless of the head, the factor is still done with the advertised hp (425).

The shipping weight is 3611. When doing the math,

3611/425 = 8.496....hence the dilemma. I did the math and Will brought it to NHRA's attention that it should be a natural A car, similar to what Larry mentioned above. Pat was in agreement that the excel sheet was incorrectly rounding the factor up. He adjusted the excel sheet this week prior to us entering the national event on Thursday. We did not enter the class until the sheetvwas changed online.

This was all done because AA at a minimum of 3430 is much more attractive than C at 4000+ lbs. Not to mention that it is much more safe.

If anyone would like to discuss this, PM me and l will give you my phone number.

Also for the record, the car is really cool and wheelie fun to drive.

Austin, congratulations to both you and Will, and thank you! Good luck racing that car.

By no means was I complaining, questioning, or saying you did anything wrong, Austin. You got them to move that combination to a natural A combination, finally, and I'm glad you did. Thanks again.