Crate Motor Class

[442OLDS]

Originally Posted by Fred Holdorf

This thread got me to thinking. Why is the only small block Ford Crate motor with specs, not on the list of accepted motors? Why are the specs on the 4 that are listed not published for someone to see? I'm not an IHRA member, due to living on the left coast so this is just a question at this time. I don't believe the 4 listed engines have been available, as assembled motors, for quite some time.

Fred

P.S. If IHRA came west I would be intrested in racing in their program.

I hope somebody can answer your question,but sorry I can't help you.One question that I do have about crate motors is that it has been brought up earlier in this thread that the H/CM class is a 9.5 horsepower to weight class.D/SA is also a 9.5 horsepower to weight class.I was just wondering why the index is 12.00 in H/CM and 11.85 in D/SA?How are the factors of these crate motor engines determined and why the difference in the index?