IHRA class HP ratings

Michigan Skip · 10-02-2008, 11:13 AM

Thanks guys.

It looks like IHRA lsets you decide what class you want by either multiplying your weight by the HP and then looking to see what class you fit. Or looking to we what class you want to run, and making the car fit the class.

On the NHRA site, for a 95 Camaro 4sp Auto, it looks like they give you only one choice (factored hp= 341, weight factor = 10.0) so according to the spreadsheet it calculates that weight needs to be 3289. I have the IHRA rule book and it gives a range of weight factor for each class (10.00-10.99) for instance, but I don't have the NHRA book. Does it give a range for each?

Thanks again.

10-02-2008, 11:13 AM	#6
Michigan Skip Junior Member Join Date: Aug 2002 Location: Three Oaks MI Posts: 58 Likes: 0 Liked 0 Times in 0 Posts	Re: IHRA class HP ratings Thanks guys. It looks like IHRA lsets you decide what class you want by either multiplying your weight by the HP and then looking to see what class you fit. Or looking to we what class you want to run, and making the car fit the class. On the NHRA site, for a 95 Camaro 4sp Auto, it looks like they give you only one choice (factored hp= 341, weight factor = 10.0) so according to the spreadsheet it calculates that weight needs to be 3289. I have the IHRA rule book and it gives a range of weight factor for each class (10.00-10.99) for instance, but I don't have the NHRA book. Does it give a range for each? Thanks again. __________________ Skip Willis 95 Z28 IHRA ST/666

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