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Old 10-09-2013, 10:58 PM   #10
ss3011
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Default Re: B/PS lt1 formula

I should have read the rule book before I commented on the camshaft question. The rule is " aftermarket cams allowed per horsepower claimed. Must check on or under factory specs for lift, duration, and overlap. "

This is like how NHRA stock class rules were back in the early 80's . That information along with the checking clearances was in the engine specs. Now all that is checked is lift. The duration, overlap, and checking clearances are not published anymore. I would bet NHRA doesn't even require that info from the OEM's , just the lift .

I remember back awhile a guy was trying to race a car in Pure Stock, and asked where to get those specs. I don't remember if he ever got a resolution.
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