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Old 11-21-2007, 03:57 PM
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4 bbl on big and small block Chevy

I follow NHRA drag racing closely and have two questions:
1) Many big block Chev in Super Gas, Super Comp, etc have over 500 cu in with a single 1150 cfm Holley and put out 1100 HP. But in other classes I see 400 cu in small block Chev running two 950 cfm Holleys. Shouldn't it be the other way around? How can a huge cu in big block be happy with just one 4 bbl when a small block needs two?

2) Fuel Funny cars have a burst panel on the "hood" to save the body if the blower bangs. Alcohol funny cars also have a burst panel for the same reason. But the Alcohol funny cars also have a "stove pipe" running from the engine bay to the side window to vent pressure in case of a banged blower. Why do they need both when the nitro funny cars only have the single burst panel?

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Old 11-21-2007, 04:40 PM
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1... just class limitations set down by the sanctioning body... Big cubes limit the induction...small cubes let them do silly stuff...

2...Thats the difference between NHRA and IHRA... If I understand what your asking...?
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