Hp Changes announced

Monte Howard · 12-20-2019, 12:04 PM

http://www.nhraracer.com/content/gen...700&zoneid=132

BG56 · 12-21-2019, 09:49 AM

Quote:

Originally Posted by Monte Howard

http://www.nhraracer.com/content/gen...700&zoneid=132

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

Billy Nees · 12-21-2019, 10:31 AM

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?

Tim H · 12-21-2019, 12:56 PM

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

Greenlight · 12-21-2019, 02:50 PM

Quote:

Originally Posted by Billy Nees

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?

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.

oldskool · 12-21-2019, 03:39 PM

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.

MEXJOE · 12-22-2019, 12:39 AM

Quote:

Originally Posted by Greenlight

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.

Isn’t that nice....

Capri · 12-26-2019, 10:38 AM

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................

jmcarter · 12-26-2019, 11:10 AM

Quote:

Originally Posted by Capri

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................

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).

12-20-2019, 12:04 PM	#1
Monte Howard Member Join Date: Nov 2002 Location: Potomac,IL Posts: 278 Likes: 1 Liked 66 Times in 22 Posts	Hp Changes announced http://www.nhraracer.com/content/gen...700&zoneid=132 __________________ Monte Howard 3209 STK, 3208 SS

12-21-2019, 10:31 AM	#3
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,485 Likes: 3,587 Liked 7,682 Times in 1,730 Posts	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? __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K

12-21-2019, 12:56 PM	#4
Tim H VIP Member Join Date: Jan 2007 Posts: 1,040 Likes: 1,068 Liked 481 Times in 158 Posts	Re: Hp Changes announced On quick perusal it seems many receive early Christmas gifts ...

12-21-2019, 03:39 PM	#6
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: 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.

12-26-2019, 10:38 AM	#8
Capri Member Join Date: Apr 2004 Posts: 171 Likes: 0 Liked 27 Times in 14 Posts	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................