Pontiac 455 hp reduction

[oldskool]

Originally Posted by Glenn Briglio

How does the Pontiac 455 get a reduction when the engine had an increase from factory rating?

Sorry, but that makes absolutely no sense to me at all.

I can name several Pontiac engines that were increased by NHRA, then later reduced by NHRA.

So, are you trying to say that once NHRA has increased the hp, they can't later come back & reduce it ?