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Jim Whitehead

09-10-2009 06:45 AM

IHRA horsepower factor

I can not find the horsepower factor for stock. 1986 pontiac firebird 305 factory 150 rated ?
Thanks in advance for any help. JIM

Jim Woods

09-10-2009 08:25 AM

Re: IHRA horsepower factor

Jim,
It is adjusted to 250 hp.

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