Hp Changes announced
 

Re: Hp Changes announced
 

'70-'71 Challenger with 425 Hemi? Misprint I'm sure, or have I been sleeping?!

Re: Hp Changes announced
 

Well Brian, since you brought it up, how did the 70-71 challenger Hemi get a HP reduction in the first place? It's slow avg. in AA is -.1125 but it's slow avg. in A is -.859. Am I missing something here?

Re: Hp Changes announced
 

On quick perusal it seems many receive early Christmas gifts ...

Re: Hp Changes announced
 

The "AA" combination was with the replacement aluminum head, and the "A" combination was with the OEM cast iron head. Only the replacement head received a HP reduction.

Re: Hp Changes announced
 

Lots of Pontiac guys will like that 5hp reduction, on the '68 Bird 400. NHRA left it at 330 for a LONG time. Then, hit it with 8, a few years back.

Still quite a few of those '68 Birds running.

Not many running the SD455. Just too rare.

There are still a few '71 455HO cars out there. I think Don Turk has one, & will appreciate the 5hp reduction.

Re: Hp Changes announced
 

Isn’t that nice....

Re: Hp Changes announced
 

Man. I wonder who ran my combination in SuperStock and just blasted the index at 1.50 under to keep the rating at 45hp over the stock rating................

Re: Hp Changes announced
 

You should subscribe to Nitro Joe’s Stats (see Bill Howell’s threads on getting the year end stat book off FleaBay) plus NHRA “periodically” releases run data for each combination and who ran them (by driver number). Some folks pour over Live Timing history and Warren Evan’s excellent YouTube offerings of many events permit you see every incremental (I know because depression sets in when I see how quick Bill Rink is LOL).