Horsepower Reduction?

Bob Mulry · 10-01-2019, 01:20 PM

Quote:

Originally Posted by Billy Nees

Bob, one of the determining factors is wheelbase. Impala wagon has longer wheelbase than Impala hardtop.
69 Chevelle 2door has shorter wheelbase than 4 door sedan and wagon.
69 Camaro has shorter wheelbase than Nova.
Ya can't make this stuff up!

Now I am really confused...…

69 ChevyII 111" WB vs 68 Camaro 108" WB both rated the same 235/255/280HP

69 Impala Sport 119" WB rated 350/255/275HP...
69 Full Size SW 119" WB rated 350/255/263HP = 12HP less

69 Chevelle 2 door 112" WB & 4 door 116" WB both rated the same 350/255/280HP
69 Chevelle SW 116" WB rated 350/255/275HP
69 Chevelle SW & 4 door same 116" WB = 5HP difference

MikeMoller · 10-01-2019, 05:45 PM

You have to request HP off a given combo. If it qualifies for a reduction, that specific combo will get reduced. Similar platform combo's may also get reduced, but only that specific year. I had my 1978 Nova 305/145 reduced, and they reduced the Buick, Pontiac, and Oldsmobile versions of the Nova with the exact same motor as well, but only in 1978. No other cars/body styles were reduced. There are criteria for minimum, maximums, and average et's for the combo that determine eligibility for reduction and how much. Those are spelled out in the NHRAracer website under the Automatic Horsepower Factor System link.

Fill out the form, never hurts to ask!

Race Clean · 10-01-2019, 06:22 PM

This horsepower thing has really got out of hand.
For me an engine hp rating is just that, stick,auto long/short wheelbase, convertible etc.
The biggest reason for this result came when they allowed the combo's to move up one Class,that meaning the same Cars could dominate one more class,thus other Cars started need some help and there we went!
Before that rule was changed the classes where protected from certain Cars.

10-01-2019, 05:45 PM	#2
MikeMoller Senior Member Join Date: May 2010 Location: Raleigh NC Posts: 637 Likes: 27 Liked 254 Times in 78 Posts	Re: Horsepower Reduction? You have to request HP off a given combo. If it qualifies for a reduction, that specific combo will get reduced. Similar platform combo's may also get reduced, but only that specific year. I had my 1978 Nova 305/145 reduced, and they reduced the Buick, Pontiac, and Oldsmobile versions of the Nova with the exact same motor as well, but only in 1978. No other cars/body styles were reduced. There are criteria for minimum, maximums, and average et's for the combo that determine eligibility for reduction and how much. Those are spelled out in the NHRAracer website under the Automatic Horsepower Factor System link. Fill out the form, never hurts to ask! __________________ Mike Moller NHRA 203 Q-R-T/SA Last edited by MikeMoller; 10-01-2019 at 05:48 PM.

10-01-2019, 06:22 PM	#3
Race Clean Member Join Date: Aug 2017 Posts: 159 Likes: 18 Liked 129 Times in 53 Posts	Re: Horsepower Reduction? This horsepower thing has really got out of hand. For me an engine hp rating is just that, stick,auto long/short wheelbase, convertible etc. The biggest reason for this result came when they allowed the combo's to move up one Class,that meaning the same Cars could dominate one more class,thus other Cars started need some help and there we went! Before that rule was changed the classes where protected from certain Cars.