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Doug Blackley · 04-19-2009, 05:29 AM

Yes but IHRA does not refactor based on NHRA adjustments. This is where the factors are different; ex 1985 Camaro/Firebird 305 150/258 combo in NHRA is still at 250 in IHRA.

04-19-2009, 05:29 AM	#2
Doug Blackley Member Join Date: Dec 2001 Location: Hanover, MA Posts: 430 Likes: 3 Liked 1 Time in 1 Post	Re: Horsepower factors Yes but IHRA does not refactor based on NHRA adjustments. This is where the factors are different; ex 1985 Camaro/Firebird 305 150/258 combo in NHRA is still at 250 in IHRA. __________________ Doug Blackley 1697 STK