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02-03-2012, 11:01 PM | #1 |
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IHRA stock classification (Crate Motor)
Hey guys, l am looking into possibly building a car for the IHRA stock eliminator crate motor class. I have two possible cars to use. One is a 1982 Z-28 camaro and the other is a 1987 Camaro Berlinetta. The crate motor that I am planning to use is a 350/330 Vortec (340hp). I am having trouble figuring out what classification each car would naturally fit in. Not sure which shipping weight I should be using to determine the classification. Would you recommend using one camaro over the other? I am pretty new to this class of racing so any help or advice would be greatly appreciated. Thanks, Jason
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02-03-2012, 11:04 PM | #2 |
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Re: IHRA stock classification (Crate Motor)
Heavy or Pro
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02-03-2012, 11:13 PM | #3 |
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Re: IHRA stock classification (Crate Motor)
I did not know that it was broken down heavy and pro. I thought it would just be under Crate Motor Stock rules (IHRA).
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02-03-2012, 11:23 PM | #4 | |
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Re: IHRA stock classification (Crate Motor)
Quote:
However,there are tons of Crate Motor cars currently being run in Stock in both NHRA and IHRA. I really don't know all the particulars about classification.I'm sure some IHRA regulars will be able to help you.Good Luck. In case you don't have one,here is the rulebook link: http://www.mydigitalpublication.com/...on/?m=1203&l=1 Last edited by 442OLDS; 02-03-2012 at 11:33 PM. Reason: Rulebook link |
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02-03-2012, 11:37 PM | #5 |
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Re: IHRA stock classification (Crate Motor)
I appreciate your help! Thanks
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02-04-2012, 12:03 AM | #6 |
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Re: IHRA stock classification (Crate Motor)
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02-04-2012, 12:09 AM | #7 |
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Re: IHRA stock classification (Crate Motor)
Probably "PRO" then.
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02-04-2012, 12:21 AM | #8 |
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Re: IHRA stock classification (Crate Motor)
Shipping weight of the car/body style used (using the heaviest available gasoline engine), divided by the IHRA rating for the crate motor = weight break to determine your natural class.
1987 Camaro (I don't see a Berlinetta listed for '87) was 3,232 pounds, divided by 340 = 9.50. You would run the 9.50 pound class, which is H/CM. You could also run the 9.00 (G/CM) and 10.00 (I/CM) pound class(es). For minimum weight for each class, take 9.00, 9.50 or 10.00 weight break x IHRA rating of the motor + 170 pounds = minimum weight, with driver, across the scales at the conclusion of the run. G/CM 9 x 340 + 170 = 3,230 pounds H/CM 9.50 x 340 + 170 = 3,400 I/CM 10.00 x 3.40 + 170 = 3,570
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02-04-2012, 01:13 AM | #9 |
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Re: IHRA stock classification (Crate Motor)
Mike,
Thanks for the info. That was helpful. I wasn't sure if I needed to use the 3,232 shipping weight as you have suggested or the 2,930 shipping weight that was listed for the 2 door coupe sport. Jason |
02-04-2012, 01:21 AM | #10 |
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Re: IHRA stock classification (Crate Motor)
I believe most, if not all, use the words "use the heaviest gasoline V8 for Classification purposes". So in, say, a 1995 Camaro, you would use the shipping weight for the LT-1 motored version.
Here are some people you can contact http://www.ihra.com/ContactUs/, or you can also send a PM (private message) to Danny Waters Sr on here (ClassRacer).
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