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George Mirza · 07-09-2009, 07:56 PM

The basic formula is Factor x NHRA HP + #170 (driver)= Min. Weight.

The issue here is determining the correct factor for this combo. Like Chuck stated above, if it's a V-8 the heaviest V-8 class is U and the factor is 20.00 or more.

If it's a 4 or 6 cyl. it falls into V and the factor is 22.00 or more. (23.08 listed factor) So you use 22.00 as your factor for V.

Now all you need is the NHRA HP to figure your weight.

07-09-2009, 07:56 PM	#6
George Mirza Senior Member Join Date: Jan 2002 Location: North Attleborough Ma. Posts: 522 Likes: 0 Liked 0 Times in 0 Posts	Re: stock classification The basic formula is Factor x NHRA HP + #170 (driver)= Min. Weight. The issue here is determining the correct factor for this combo. Like Chuck stated above, if it's a V-8 the heaviest V-8 class is U and the factor is 20.00 or more. If it's a 4 or 6 cyl. it falls into V and the factor is 22.00 or more. (23.08 listed factor) So you use 22.00 as your factor for V. Now all you need is the NHRA HP to figure your weight.