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01-08-2021, 06:03 PM | #1 |
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1972 Stock weight breaks
Can someone post the 1972 stock weight breaks ?
I have 72 rule book that i can't get at now. Want to see how badly the car was classified . TIA Gerry Last edited by Rag71; 12-23-2021 at 02:42 PM. |
01-10-2021, 02:43 PM | #2 |
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Re: 1972 Stock weight breaks
1972 was a strange year.
SUPER Stock breaks were the same 1970-74: SS/A=6.00 SS/B=6.50 etc SS/H=9.50 The rules were pretty steady too AFAIK. For STOCK, 1972 went back to almost pure stock so the rules were very different from 1971. A/S=9.00 B/S=10.00 C/S=11.00 etc M/S=21.00 N/S=22.00 O/S=24.00 P/S=26.00 Complicating things were that the 1972 new cars had ONLY NET ratings, not gross and not gross and net like many 1971 cars had. All of the NHRA breaks & factoring up to 1972 was based on GROSS HP so it was a big dilemma what to do with NET HP - and how to run eg a 330hp GROSS 1971 car against a 270hp NET 1972 car when it might well be the exact same car & engine. I dont know exactly what they did. From today's excel files for 1972, it looks like most of the 1972 "net" ratings were factored UP by NHRA to a guess at those engines "GROSS" ratings. Messy. So you'd have to know what car/engine you have & what exactly NHRA did to factor that engine - in 1972 race year. |
01-13-2021, 09:17 PM | #3 |
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Re: 1972 Stock weight breaks
I dug out my 1972 Rulebook to answer this question but someone beat me to it. I couldn't help but notice how small and thin it is!
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Marty Knox 3071 STK |
12-18-2021, 04:47 PM | #4 |
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Re: 1972 Stock weight breaks
Here's another place to put out another APB for a '72 or '73 NHRA "Factor Finder" publication, preferably both.
So, who has a copy of one or both these "Factor Finder" publications ? Anybody know any of the older racers who were racing back in '72 & '73, who might have a copy or know someone else who might ? Anyone know of any online copy that can be accessed ? Does anybody reading this have any idea how I could get a look at one, or have someone look at one of these for me ? HELP !!! Last edited by oldskool; 12-22-2021 at 10:12 PM. |
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