nhra hp refactor ???
 

Where do you look to find the refactored HP per NHRA on any engine in their guide???? Thanx fed387

Re: nhra hp refactor ???
 

It's in the Stock Car Classification Guide. There's Factory HP and NHRA Factored HP listed.

Re: nhra hp refactor ???
 

On the charts, look at the column of power to weight factors; the factory engine displacement and hp will be at the top, the NHRA factor(s) will be at the bottom. Sometimes there will be multiple columns for the same engine, each with an annotation for the classification. (i.e. Stock manual trans, Stock auto trans, Super Stock manual trans, etc. etc.)