More horsepower adjustments....

[jmcarter]

Looks like a few really good racers just got a gift...


http://www.nhraracer.com/content/gen...639&zoneid=132

[Tom Moock]

hp. change`s for Stock or SuperStock?

[Tony Janes]

Both

[Dwight Southerland]

ClassRacerInfo has the updates installed. Read'm


Interesting that I had to create a separate engine for the '69 Chev 427-425 with aluminum heads just to make the classification process work. Such a mucked up mess. The complaints about the 396-375 in the thread about roller lifters is duplicated in the 427. They didn't even build it like it is in the books, and people think that crate motors are a sacrilege.

[james schaechter]

I know the 327 250 hp 65 Chevelle was an error. Mattingly hit the automatic combo at BG, but no one in the stick combo hit it. They split the stick and auto combos and fixed the hp.

[Frank Castros]

1976 Challenger?

[SGE1340]

I caught the 1976 challenger too, that would be a rare combo! Not to be a whiner, but it appears that my combo has been re classified, going by what is on there, im no longer a natural A car, id be a AA/SA ? 1969 Camaro 427/425 . not only that but the horsepower got raised from 425 back up to 435 which is not right. Ive got a call in to Bruce about it.

[Tony Janes]

Originally Posted by james schaechter

I know the 327 250 hp 65 Chevelle was an error. Mattingly hit the automatic combo at BG, but no one in the stick combo hit it. They split the stick and auto combos and fixed the hp.

Jim that is correct.

[Alan Roehrich]

Originally Posted by SGE1340

I caught the 1976 challenger too, that would be a rare combo! Not to be a whiner, but it appears that my combo has been re classified, going by what is on there, im no longer a natural A car, id be a AA/SA ? 1969 Camaro 427/425 . not only that but the horsepower got raised from 425 back up to 435 which is not right. Ive got a call in to Bruce about it.

Only the aluminum replacement head horsepower was raised back to 435 in Stock Eliminator. Which is where it had always been since the 401 head was allowed as a replacement head. It (the 401 head) was allowed with a 10HP penalty to begin with. We've run one that way since 2008 or so. I'm not sure I can reasonably disagree with the 10HP penalty, even though it would certainly be in our best interest. It takes 80 pounds of the nose of the car, among other things. I would prefer iron heads myself. Cylinder heads are a tricky item, how good they end up depends on how good a casting you start with, who you take them to, and what you let them do. The rules keep getting looser, and enforcement seems inconsistent.

With regards to the 359 intake, it depends upon what 163 you compare it to. I know a local racer who bought 10 163 intakes before the 359 was allowed, took them to the best local expert, who tossed 8 of them as bad. Of those, 5-6 were obvious to me, the other 2-3 I saw with a little help, and now I know what to look for. I know some who have gained a little with a 359, and some who have lost a little. We might have gained 0.02, I cannot say for sure. I have learned much since then.

No excuses here, we'd be just fine if they took the 359 intake, 401 heads, and roller rockers away. We'd have some expensive door stops, but we could recover and do just as well. I'll probably build a nasty old evil 396 next anyway.

With regards to classification, both Bruce Bachelder and Danny Gracia told me that the 10HP penalty for the 401 head was not considered in factoring the class. For example, I was told that the 401 head on a 427/425 in a 69 Chevelle with an automatic did not make it a natural A car. It remained a natural B car due to the factor (425) of the original engine without the 401, which was considered the "base" for calculation, the replacement penalty was not considered for the class factor, only for the class weight. That may have changed.

[Dave Ficacci]

Originally Posted by Alan Roehrich

Only the aluminum replacement head horsepower was raised back to 435 in Stock Eliminator. Which is where it had always been since the 401 head was allowed as a replacement head. It (the 401 head) was allowed with a 10HP penalty to begin with. We've run one that way since 2008 or so. I'm not sure I can reasonably disagree with the 10HP penalty, even though it would certainly be in our best interest. It takes 80 pounds of the nose of the car, among other things. I would prefer iron heads myself. Cylinder heads are a tricky item, how good they end up depends on how good a casting you start with, who you take them to, and what you let them do. The rules keep getting looser, and enforcement seems inconsistent.

With regards to the 359 intake, it depends upon what 163 you compare it to. I know a local racer who bought 10 163 intakes before the 359 was allowed, took them to the best local expert, who tossed 8 of them as bad. Of those, 5-6 were obvious to me, the other 2-3 I saw with a little help, and now I know what to look for. I know some who have gained a little with a 359, and some who have lost a little. We might have gained 0.02, I cannot say for sure. I have learned much since then.

No excuses here, we'd be just fine if they took the 359 intake, 401 heads, and roller rockers away. We'd have some expensive door stops, but we could recover and do just as well. I'll probably build a nasty old evil 396 next anyway.

With regards to classification, both Bruce Bachelder and Danny Gracia told me that the 10HP penalty for the 401 head was not considered in factoring the class. For example, I was told that the 401 head on a 427/425 in a 69 Chevelle with an automatic did not make it a natural A car. It remained a natural B car due to the factor (425) of the original engine without the 401, which was considered the "base" for calculation, the replacement penalty was not considered for the class factor, only for the class weight. That may have changed.

427 with the 401 aluminum head has always been 435. NHRA made a mistake when updating the guide in January of last year and listed it at 425 which was eventually corrected back to 435 before the season opener. I know some racers missed the update and ran this combo all of last year at 425.